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2–1 CardBus and 16-Bit PC Card Signal Names by GGU Terminal Number2–4. .
2–2 CardBus and 16-Bit PC Card Signal Names by PGE Terminal Number2–5. . .
2–3 CardBus and 16-Bit PC Card Signal Names by GHK Terminal Number2–6. . .
2–4 CardBus PC Card Signal Names Sorted Alphabetically to
8–1 PC Card Address Setup Time, t
8–2 PC Card Command Active Cycle Time, t
8–3 PC Card Command Active Cycle Time, t
8–4 PC Card Address Hold Time, t
, 8-Bit and 16-Bit PCI Cycles8–4. . . . . . .
su(A)
, 8-Bit PCI Cycles8–5. . . . . . . . . .
c(A)
, 16-Bit PCI Cycles8–5. . . . . . . . .
c(A)
, 8-Bit and 16-Bit PCI Cycles8–5. . . . . . . . .
h(A)
x
1 Introduction
1.1Description
The TI PCI1410A device is a high-performance PCI-to-PC Card controller that supports a single PC Card socket
compliant with the PC Card Standard. The PCI1410A device provides features that make it the best choice for
bridging between PCI and PC Cards in both notebook and desktop computers. The PC Card Standard retains the
16-bit PC Card specification defined in PCI Local Bus Specification and defines the new 32-bit PC Card, CardBus,
as being capable of full 32-bit data transfers at 33 MHz. The PCI1410A device supports both 16-bit and CardBus PC
Cards, powered at 5 V or 3.3 V, as required.
The PCI1410A device is compliant with the PCI Local Bus Specification, and its PCI interface can act as either a PCI
master device or a PCI slave device. The PCI bus mastering is initiated during 16-bit PC Card DMA transfers or
CardBus PC Card bridging transactions. The PCI1410A device also is compliant with the latest PCI Bus Power
Management Interface Specification and PCI Bus Power Management Interface Specification for PCI to CardBus
Bridges.
All card signals are buffered internally to allow hot insertion and removal without external buffering. The PCI1410A
device is register-compatible with the Intel 82365SL-DF and 82365SL ExCA controllers. The PCI1410A internal
data-path logic allows the host to access 8-, 16-, and 32-bit cards using full 32-bit PCI cycles for maximum
performance. Independent buffering and a pipeline architecture provide an unsurpassed performance level with
sustained bursting. The PCI1410A device also can be programmed to accept fast-posted writes to improve
system-bus utilization.
Multiple system-interrupt signaling options are provided, including: parallel PCI, parallel ISA, serialized ISA, and
serialized PCI. Furthermore, general-purpose inputs and outputs are provided for the board designer to implement
sideband functions. Many other features designed into the PCI1410A device, such as socket-activity light-emitting
diode (LED) outputs, are discussed in detail throughout the design specification.
An advanced complementary metal-oxide semiconductor (CMOS) process achieves low system power
consumption, while operating at PCI clock rates up to 33 MHz. Several low-power modes enable the host power
management system to further reduce power consumption.
1.2Features
The PCI1410A device supports the following features:
•Ability to wake from D3
•Full compatiblity with the Intel 430TX (Mobile Triton II) chipset
•3.3-V core logic with universal PCI interfaces compatible with 3.3-V and 5-V PCI signaling environments
•Mix-and-match 5-V/3.3-V 16-bit PC Cards and 3.3-V CardBus Cards
•Single PC Card or CardBus slot with hot insertion and removal
•Burst transfers to maximize data throughput on the PCI bus and the CardBus bus
•Parallel PCI interrupts, parallel ISA IRQ and parallel PCI interrupts, serial ISA IRQ with parallel PCI
interrupts, and serial ISA IRQ and PCI interrupts
•Serial EEPROM interface for loading subsystem ID and subsystem vendor ID
•Pipelined architecture allows greater than 130 Mbit/s sustained throughput from CardBus to PCI and from
PCI to CardBus
and D3
hot
cold
1–1
•Interface to parallel single-slot PC Card power-switch interfaces like the TI TPS2211 device
•Up to five general-purpose I/Os
•Programmable output select for CLKRUN
•Five PCI memory windows and two I/O windows available to the 16-bit PC Card socket
•Two I/O windows and two memory windows available to the CardBus socket
•Exchangeable card architecture (ExCA) compatible registers are mapped in memory and I/O space
•Compatibility with Intel 82365SL-DF and 82365SL registers
•Distributed DMA (DDMA) and PC/PCI DMA
•16-bit DMA on the PC Card socket
•Ring indicate, SUSPEND
, PCI CLKRUN, and CardBus CCLKRUN
•Socket-activity LED pins
•PCI bus lock (LOCK
)
•Advanced submicron, low-power CMOS technology
•Internal ring oscillator
1.3Related Documents
•Advanced Configuration and Power Interface (ACPI) Specification (Revision 2.0)
•PCI Bus Power Management Interface Specification (Revision 1.1)
•PCI Bus Power Management Interface Specification for PCI to CardBus Bridges (Revision 0.6)
•PCI Local Bus Specification (Revision 2.2)
•PCI Mobile Design Guide (Revision 1.0)
•PCI14xx Implementation Guide for D3 Wake-Up
•PC Card Standard, Release 7
•PC 98
•PC 99
•Serialized IRQ Support for PCI Systems (Revision 6)
1.4Trademarks
MicroStar BGA and TI are trademarks of Texas Instruments.
Intel is a trademark of Intel Corporation.
Maxim is a trademark of Maxim Integrated Products, Inc.
Other trademarks are the property of their respective owners.
The PCI1410A device is packaged in either a 144-terminal GGU MicroStar BGA or a 144-terminal PGE package.
It also is packaged in a 209-terminal GHK MicroStar BGA that is pin-compatible with the TI PCI4410A device. The
PCI4410A device is a single-socket CardBus bridge with integrated OHCI link. Figure 2–1 is a PGE-package terminal
diagram showing PCI-to-CardBus signal names. Figure 2–2 is a PGE-package terminal diagram showing PCI-to-PC
Card signal names. Figure 2–3 and Figure 2–4 are terminal diagrams for the GGU and GHK packages, respectively.
Table 2–1 shows the terminal assignments for the 144-terminal GGU CardBus and 16-bit PC Card signal names.
Table 2–2 shows the terminal assignments for the 144-terminal PGE CardBus and 16-bit PC Card signal names.
Table 2–3 shows the terminal assignments for the 209-terminal GHK CardBus and 16-bit PC Card signal names.
Table 2–4 shows the CardBus PC Card signal names, sorted alphabetically to the GGU/PGE/GHK terminal numbers.
Table 2–5 shows the 16-bit PC Card signal names, sorted alphabetically to the GGU/PGE/GHK terminal numbers.
2–3
Table 2–1. CardBus and 16-Bit PC Card Signal Names by GGU Terminal Number
The terminals are grouped in tables by functionality, such as PCI system function and power-supply function (see
DESCRIPTION
I/O
DESCRIPTION
Table 2–6 through Table 2–16). The terminal numbers also are listed for convenient reference.
Table 2–6. Power-Supply Terminals
TERMINAL
NAME
GND
V
CC
V
CCCB
V
CCI
V
CCP
NUMBER
GGUPGEGHK
B6, C10,
D3, F12,
H2, K11,
L4, M8
B4, C8,
D12, F3,
H11, K2,
L6
A7, G1390, 126A12, H19 Clamp voltage for PC Card interface. Matches card signaling environment, 5 V or 3.3 V.
L963R10Clamp voltage for interrupt subsystem interface and miscellaneous I/O, 5 V or 3.3 V
G1, N418, 44M1, V6Clamp voltage for PCI signaling, 5 V or 3.3 V
6, 22, 42,
58, 78,
94, 114,
130
14, 30,
50, 86,
102, 122,
138
A15, E11,
H15, J5,
L15, M5,
R9, W5
A13, B9,
F17, J18,
L2, P3,
W7
Device ground terminals
Power-supply terminal for core logic (3.3 V)
DESCRIPTION
Table 2–7. PC Card Power-Switch Terminals
TERMINAL
NAME
VCCD0
VCCD1
VPPD0
VPPD1
NUMBER
GGU PGE GHK
N13
M137374
N12
M127172
I/ODESCRIPTION
M18
M19
V12
U12
OLogic controls to the TPS2211 PC Card power-switch interface to control AVCC.
OLogic controls to the TPS2211 PC Card power-switch interface to control AVPP.
TERMINAL
NAME
GRSTM1066V11I
PCLKH121M6I
PRST
NUMBER
GGU PGE GHK
G420M3I
Table 2–8. PCI System Terminals
I/ODESCRIPTION
Global reset. When global reset is asserted, GRST causes the PCI1410A device to place all output
buffers in a high-impedance state and reset all internal registers. When GRST
is completely in its default state. For systems that require wake-up from D3, GRST
asserted only during initial boot. PRST
is retained when transitioning from D3 to D0. For systems that do not require wake-up from D3, GRST
should be tied to PRST.
When the SUSPEND
are preserved. All outputs are placed in a high-impedance state.
PCI bus clock. PCLK provides timing for all transactions on the PCI bus. All PCI signals are sampled
at the rising edge of PCLK.
PCI bus reset. When the PCI bus reset is asserted, PRST causes the PCI1410A device to place all
output buffers in a high-impedance state and reset internal registers. When PRST
device is completely nonfunctional. After PRST
state.
When the SUSPEND mode is enabled, the device is protected from PRST, and the internal registers
are preserved. All outputs are placed in a high-impedance state.
mode is enabled, the device is protected from GRST, and the internal registers
should be asserted following initial boot so that PME context
is deasserted, the PCI1410A device is in a default
PCI address/data bus. These signals make up the multiplexed PCI address and data bus on the
primary interface. During the address phase of a primary bus PCI cycle, AD31–AD0 contain a 32-bit
I/O
address or other destination information. During the data phase, AD31–AD0 contain data.
PCI bus commands and byte enables. These signals are multiplexed on the same PCI terminals.
During the address phase of a primary bus PCI cycle, C/BE3
During the data phase, this 4-bit bus is used as byte enables. The byte enables determine which
I/O
byte paths of the full 32-bit data bus carry meaningful data. C/BE0
C/BE1
applies to byte 1 (AD15–AD8), C/BE2 applies to byte 2 (AD23–AD16), and C/BE3 applies
to byte 3 (AD31–AD24).
PCI bus parity. In all PCI bus read and write cycles, the PCI1410A device calculates even parity
across the AD31–AD0 and C/BE3
device outputs this parity indicator with a one-PCLK delay. As a target during PCI cycles, the
calculated parity is compared to the initiator parity indicator . A compare error results in the assertion
of a parity error (PERR
).
–C/BE0 buses. As an initiator during PCI cycles, the PCI1410A
–C/BE0 define the bus command.
applies to byte 0 (AD7–AD0),
2–13
TERMINAL
I/O
DESCRIPTION
NAME
DEVSEL
FRAME
GNT
IDSELF413L1I
IRDY
PERR
REQ
SERR
STOP
TRDY
NUMBER
GGU PGE GHK
L132P6I/O
J428P2I/O
B12H1I
K129N5I/O
L334P5I/O
A11H2O
M135R3O
L233R2I/O
K331R1I/O
Table 2–10. PCI Interface Control Terminals
I/ODESCRIPTION
PCI device select. The PCI1410A device asserts DEVSEL to claim a PCI cycle as the target device.
As a PCI initiator on the bus, the PCI1410A device monitors DEVSEL
target responds before timeout occurs, the PCI1410A device terminates the cycle with an initiator
abort.
PCI cycle frame. FRAME is driven by the initiator of a bus cycle. FRAME is asserted to indicate that
a bus transaction is beginning, and data transfers continue while this signal is asserted. When FRAME
is deasserted, the PCI bus transaction is in the final data phase.
PCI bus grant. GNT is driven by the PCI bus arbiter to grant the PCI1410A device access to the PCI
bus after the current data transaction has completed. GNT
depending on the PCI bus parking algorithm.
Initialization device select. IDSEL selects the PCI1410A device during configuration space accesses.
IDSEL can be connected to one of the upper 24 PCI address lines on the PCI bus.
PCI initiator ready. IRDY indicates the PCI bus initiator’s ability to complete the current data phase
of the transaction. A data phase is completed on a rising edge of PCLK, when both IRDY
are asserted. Until IRDY and TRDY are both sampled asserted, wait states are inserted.
PCI parity error indicator. PERR is driven by a PCI device to indicate that calculated parity does not
match P A R when PERR
see Section 4.4).
PCI bus request. REQ is asserted by the PCI1410A device to request access to the PCI bus as an
initiator.
PCI system error. SERR is an output that is pulsed from the PCI1410A device when enabled through
bit 8 (SERR_EN) of the command register (PCI offset 04h, see Section 4.4) indicating a system error
has occurred. The PCI1410A device need not be the target of the PCI cycle to assert this signal. When
SERR
is enabled in the command register, this signal also pulses, indicating that an address parity
error has occurred on a CardBus interface.
PCI cycle stop signal. STOP is driven by a PCI target to request the initiator to stop the current PCI
bus transaction. STOP
do not support burst data transfers.
PCI target ready. TRDY indicates the primary bus target’s ability to complete the current data phase
of the transaction. A data phase is completed on a rising edge of PCLK, when both IRDY
are asserted. Until both IRDY and TRDY are asserted, wait states are inserted.
is enabled through bit 6 (PERR_EN) of the command register (PCI offset 04h,
is used for target disconnects and is commonly asserted by target devices that
may or may not follow a PCI bus request,
until a target responds. If no
and TRDY
and TRDY
2–14
Table 2–11. Multifunction and Miscellaneous Terminals
I/O
DESCRIPTION
TERMINAL
NAME
MFUNC0K860W10I/O
MFUNC1N961V10I/O
MFUNC2K964P10I/O
MFUNC3N1065W11I/O
MFUNC4L1067U11I/O
MFUNC5N1168P11I/O
MFUNC6M1169R11I/O
RI_OUT/PMEL859P9O
SPKROUT
SUSPENDL1170W12I
NUMBER
GGU PGE GHK
M962U10O
I/ODESCRIPTION
Multifunction terminal 0. MFUNC0 can be configured as parallel PCI interrupt INTA, GPI0,
GPO0, socket activity LED output, zoomed-video (ZV) switching outputs, CardBus audio PWM,
GPE, or a parallel IRQ. See Section 4.30, Multifunction Routing Register, for configuration
details.
Multifunction terminal 1. MFUNC1 can be configured as GPI1, GPO1, socket activity LED
output, ZV switching outputs, CardBus audio PWM, GPE
Multifunction Routing Register, for configuration details.
Serial data (SDA). When VCCD0
provides the SDA signaling for the serial bus interface. The two-terminal serial interface loads
the subsystem identification and other register defaults from an EEPROM after a PCI reset. See
Section 3.6.1, Serial Bus Interface Implementation, for details on other serial bus applications.
Multifunction terminal 2. MFUNC2 can be configured as PC/PCI DMA request, GPI2, GPO2,
socket activity LED output, ZV switching outputs, CardBus audio PWM, GPE
parallel IRQ. See Section 4.30, Multifunction Routing Register, for configuration details.
Multifunction term i n a l 3 . MFUNC3 can be configured as a parallel IRQ or the serialized interrupt
signal IRQSER. See Section 4.30, Multifunction Routing Register, for configuration details.
Multifunction terminal 4. MFUNC4 can be configured as PCI LOCK, GPI3, GPO3, socket activity
LED output, ZV switching outputs, CardBus audio PWM, GPE
Section 4.30, Multifunction Routing Register, for configuration details.
Serial clock (SCL). When VCCD0 and VCCD1 are high after a PCI reset, the MFUNC4 terminal
provides the SCL signaling for the serial bus interface. The two-terminal serial interface loads
the subsystem identification and other register defaults from an EEPROM after a PCI reset. See
Section 3.6.1, Serial Bus Interface Implementation, for details on other serial bus applications.
Multifunction terminal 5. MFUNC5 can be configured as PC/PCI DMA grant, GPI4, GPO4,
socket activity LED output, ZV switching outputs, CardBus audio PWM, GPE
See Section 4.30, Multifunction Routing Register, for configuration details.
Multifunction terminal 6. MFUNC6 can be configured as a PCI CLKRUN or a parallel IRQ. See
Section 4.30, Multifunction Routing Register, for configuration details.
Ring indicate out and power-management event output. Terminal provides an output for
ring-indicate or PME
Speaker output. SPKROUT is the output to the host system that can carry SPKR or CAUDIO
through the PCI1410A device from the PC Card interface. SPKROUT is driven as the
exclusive-OR combination of card SPKR//CAUDIO inputs.
Suspend. SUSPEND protects the internal registers from clearing when the GRST or PRST
signal is asserted. See Section 3.8.4, Suspend Mode, for details.
signals.
and VCCD1 are high after a PCI reset, the MFUNC1 terminal
Table 2–12. 16-Bit PC Card Address and Data Terminals
I/ODESCRIPTION
B14
B15
E14
A16
E17
E18
E19
F18
G14
D19
C15
F14
G15
F13
G19
J15
G17
F19
C14
A14
C13
B13
C12
A11
B11
C11
J17
K14
K17
K19
L17
C8
A8
F9
J19
K15
K18
L14
L18
B8
E9
C9
OPC Card address. 16-bit PC Card address lines. ADDR25 is the most significant bit.
I/OPC Card data. 16-bit PC Card data lines. DATA15 is the most significant bit.
2–16
Table 2–13. 16-Bit PC Card Interface Control Terminals
I/O
DESCRIPTION
TERMINAL
NAME
BVD1
(STSCHG
/RI)
BVD2
(SPKR
)
CD1
CD2
CE1
CE2
INPACKB8123E12I
IORD
IOWR
OEG1092H17O
NUMBER
GGUPGEGHK
C5135E10I
B5134C10I
L12A475
137
H13
G118891
F1393H14O
F1096G18O
L19
A9
J14
H18
I/ODESCRIPTION
Battery voltage detect 1. BVD1 is generated by 16-bit memory PC Cards that include
batteries. BVD1 is used with BVD2 as an indication of the condition of the batteries on a
memory PC Card. Both BVD1 and BVD2 are high when the battery is good. When BVD2
is low and BVD1 is high, the battery is weak and should be replaced. When BVD1 is low,
the battery is no longer serviceable and the data in the memory PC Card is lost. See
Section 5.6, ExCA Card Status-Change-Interrupt Configuration Register, for enable bits.
See Section 5.5, ExCA Card Status-Change Register, and Section 5.2, ExCA InterfaceStatus Register, for the status bits for this signal.
Status change. STSCHG
or battery voltage dead condition of a 16-bit I/O PC Card.
Ring indicate. RI
Battery voltage detect 2. BVD2 is generated by 16-bit memory PC Cards that include
batteries. BVD2 is used with BVD1 as an indication of the condition of the batteries on a
memory PC Card. Both BVD1 and BVD2 are high when the battery is good. When BVD2
is low and BVD1 is high, the battery is weak and should be replaced. When BVD1 is low,
the battery is no longer serviceable and the data in the memory PC Card is lost. See
Section 5.6, ExCA Card Status-Change-Interrupt Configuration Register, for enable bits.
See Section 5.5, ExCA Card Status-Change Register, and Section 5.2, ExCA InterfaceStatus Register, for the status bits for this signal.
Speaker. SPKR
have been configured for the 16-bit I/O interface. The audio signals from cards A and B are
combined by the PCI1410A device and are output on SPKROUT.
DMA request. BVD2 can be used as the DMA request signal during DMA operations to a
16-bit PC Card that supports DMA. The PC Card asserts BVD2 to indicate a request for a
DMA operation.
Card detect 1 and card detect 2. CD1 and CD2 are connected internally to ground on the
PC Card. When a PC Card is inserted into a socket, CD1
I
status, see Section 5.2, ExCA Interface Status Register.
Card enable 1 and card enable 2. CE1 and CE2 enable even- and odd-numbered address
bytes. CE1
O
address bytes.
Input acknowledge. INPACK is asserted by the PC Card when it can respond to an I/O read
cycle at the current address.
DMA request. INPACK
a 16-bit PC Card that supports DMA. If it is used as a strobe, the PC Card asserts this signal
to indicate a request for a DMA operation.
I/O read. IORD is asserted by the PCI1410A device to enable 16-bit I/O PC Card data output
during host I/O read cycles.
DMA write. IORD
Card that supports DMA. The PCI1410A device asserts IORD
the PC Card to host memory.
I/O write. IOWR is driven low by the PCI1410A device to strobe write data into 16-bit I/O PC
Cards during host I/O write cycles.
DMA read. IOWR
Card that supports DMA. The PCI1410A device asserts IOWR
memory to the PC Card.
Output enable. OE is driven low by the PCI1410A device to enable 16-bit memory PC Card
data output during host memory read cycles.
DMA terminal count. OE
PC Card that supports DMA. The PCI1410A device asserts OE
write operation.
is an optional binary audio signal available only when the card and socket
enables even-numbered address bytes, and CE2 enables odd-numbered
is used to alert the system to a change in the READY, write protect,
is used by 16-bit modem cards to indicate a ring detection.
and CD2 are pulled low. For signal
can be used as the DMA request signal during DMA operations from
is used as the DMA write strobe during DMA operations from a 16-bit PC
during DMA transfers from
is used as the DMA write strobe during DMA operations from a 16-bit PC
during transfers from host
is used as terminal count (TC) during DMA operations to a 16-bit
to indicate TC for a DMA
2–17
Table 2–13. 16-Bit PC Card Interface Control Terminals (Continued)
I/O
DESCRIPTION
TERMINAL
NAME
READY
(IREQ
)
REG
RESETB9119F12OPC Card reset. RESET forces a hard reset to a 16-bit PC Card.
VS1
VS2
WAIT
WEC11106F15O
WP
(IOIS16
)
NUMBER
GGUPGEGHK
D6132A10I
B7125B12O
C6D9131
117
A5133B10I
D5136F10I
I/ODESCRIPTION
Ready. The ready function is provided by READY when the 16-bit PC Card and the host socket
are configured for the memory-only interface. READY is driven low by the 16-bit memory PC
Cards to indicate that the memory card circuits are busy processing a previous write command.
READY is driven high when the 16-bit memory PC Card is ready to accept a new data-transfer
command.
F11
E13
Interrupt request. IREQ
on the 16-bit I/O PC Card requires service by the host software. IREQ
no interrupt is requested.
Attribute memory select. REG remains high for all common memory accesses. When REG is
asserted, access is limited to attribute memory (OE
active). Attribute memory is a separately accessed section of card memory and generally
IOWR
is used to record card capacity and other configuration and attribute information.
DMA acknowledge. REG
16-bit PC Card that supports DMA. The PCI1410A device asserts REG
operation. REG
to transfer data.
Voltage sense 1 and voltage sense 2. VS1 and VS2, when used in conjunction with each other,
I/O
determine the operating voltage of the PC Card.
Bus cycle wait. WAIT is driven by a 16-bit PC Card to extend the completion of the memory or
I/O cycle in progress.
Write enable. WE is used to strobe memory write data into 16-bit memory PC Cards. WE also is
used for memory PC Cards that employ programmable memory technologies.
DMA terminal count. WE
DMA. The PCI1410A device asserts WE
Write protect. WP applies to 16-bit memory PC Cards. WP reflects the status of the write-protect
switch on 16-bit memory PC Cards. For 16-bit I/O cards, WP is used for the 16-bit port (IOIS16
function.
I/O is 16 bits. IOIS16
when the address on the bus corresponds to an address to which the 16-bit PC Card responds,
and the I/O port that is addressed is capable of 16-bit accesses.
DMA request. WP can be used as the DMA request signal during DMA operations to a 16-bit
PC Card that supports DMA. If used, the PC Card asserts WP to indicate a request for a DMA
operation.
is asserted by a 16-bit I/O PC Card to indicate to the host that a device
is used as a DMA acknowledge (DACK) during DMA operations to a
is used in conjunction with the DMA read (IOWR) or DMA write (IORD) strobes
is used as TC during DMA operations to a 16-bit PC Card that supports
applies to 16-bit I/O PC Cards. IOIS16 is asserted by the 16-bit PC Card
or WE active) and to the I/O space (IORD or
to indicate TC for a DMA read operation.
is high (deasserted) when
to indicate a DMA
)
TERMINAL
NAME
CCLKB12108D19O
CCLKRUN
CRST
2–18
NUMBER
GGUPGEGHK
D5136F10I/O
B9119F12O
Table 2–14. CardBus PC Card Interface System Terminals
I/ODESCRIPTION
CardBus clock. CCLK provides synchronous timing for all transactions on the CardBus interface.
All signals except CRST
CVS1 are sampled on the rising edge of CCLK, and all timing parameters are defined with the
rising edge of this signal. CCLK operates at the PCI bus clock frequency, but it can be stopped
in the low state or slowed down for power savings.
CardBus clock run. CCLKRUN is used by a CardBus PC Card to request an increase in the CCLK
frequency, and by the PCI1410A device to indicate that the CCLK frequency is going to be
decreased.
CardBus reset. CRST brings CardBus PC Card-specific registers, sequencers, and signals to a
known state. When CRST
high-impedance state, and the PCI1410A device drives these signals to a valid logic level.
Assertion can be asynchronous to CCLK, but deassertion must be synchronous to CCLK.
, CCLKRUN, CINT, CSTSCHG, CAUDIO, CCD2, CCD1, CVS2, and
is asserted, all CardBus PC Card signals are placed in a
Table 2–15. CardBus PC Card Address and Data Terminals
CardBus address and data. These signals make up the multiplexed CardBus address and data
bus on the CardBus interface. During the address phase of a CardBus cycle, CAD31–CAD0
I/O
contain a 32-bit address. During the data phase of a CardBus cycle, CAD31–CAD0 contain data.
CAD31 is the most significant bit.
CardBus bus commands and byte enables. CC/BE3–CC/BE0 are multiplexed on the same
CardBus terminals. During the address phase of a CardBus cycle, CC/BE3
bus command. During the data phase, this 4-bit bus is used as byte enables. The byte enables
I/O
determine which byte paths of the full 32-bit data bus carry meaningful data. CC/BE0
byte 0 (CAD7–CAD0), CC/BE1
(CAD23–CAD16), and CC/BE3
CardBus parity . In all CardBus read and write cycles, the PCI1410A device calculates even parity
across the CAD and CC/BE
outputs CPAR with a one-CCLK delay. As a target during CardBus cycles, the calculated parity
is compared to the initiator’s parity indicator; a compare error results in a parity-error assertion.
applies to byte 1 (CAD15–CAD8), CC/BE2 applies to byte 2
applies to byte 3 (CAD31–CAD24).
buses. As an initiator during CardBus cycles, the PCI1410A device
–CC/BE0 define the
applies to
2–19
Table 2–16. CardBus PC Card Interface Control Terminals
I/O
DESCRIPTION
TERMINAL
NAME
CAUDIOB5134C10I
CBLOCK
CCD1
CCD2
CDEVSEL
CFRAME
CGNT
CINT
CIRDY
CPERR
CREQ
CSERR
CSTOP
CSTSCHG
CTRDY
CVS1
CVS2
NUMBER
GGUPGEGHK
D11103E19I/O
L12A475
B13107E17I/O
B11111E14I/O
C11106F15O
D6132A10I
A12110C15I/O
C13104F14I/O
B8123E12I
A5133B10I
C12105E18I/O
C5135E10I
A13109A16I/O
C6D9131
137
117
L19
A9
F11
E13
I/ODESCRIPTION
CardBus audio. CAUDIO is a digital input signal from a PC Card to the system speaker. The
PCI1410A device supports the binary audio mode and outputs a binary signal from the card to
SPKROUT.
CardBus lock. CBLOCK is used to gain exclusive access to a target.
CardBus detect 1 and CardBus detect 2. CCD1 and CCD2 are used in conjunction with CVS1
I
and CVS2 to identify card insertion and interrogate cards to determine the operating voltage and
card type.
CardBus device select. The PCI1410A device asserts CDEVSEL to claim a CardBus cycle as
the target device. As a CardBus initiator on the bus, the PCI1410A device monitors CDEVSEL
until a target responds. If no target responds before timeout occurs, the PCI1410A device
terminates the cycle with an initiator abort.
CardBus cycle frame. CFRAME is driven by the initiator of a CardBus bus cycle. CFRAME is
asserted to indicate that a bus transaction is beginning, and data transfers continue while this
signal is asserted. When CFRAME is deasserted, the CardBus bus transaction is in the final
data phase.
CardBus bus grant. CGNT is driven by the PCI1410A device to grant a CardBus PC Card
access to the CardBus bus after the current data transaction has been completed.
CardBus interrupt. CINT is asserted low by a CardBus PC Card to request interrupt servicing
from the host.
CardBus initiator ready. CIRDY indicates the ability of the CardBus initiator to complete the
current data phase of the transaction. A data phase is completed on a rising edge of CCLK when
both CIRDY and CTRDY are asserted. Until both CIRDY and CTRDY are sampled asserted,
wait states are inserted.
CardBus parity error. CPERR reports parity errors during CardBus transactions, except during
special cycles. It is driven low by a target two clocks following that data when a parity error is
detected.
CardBus request. CREQ indicates to the arbiter that the CardBus PC Card desires use of the
CardBus bus as an initiator.
CardBus system error. CSERR reports address parity errors and other system errors that could
lead to catastrophic results. CSERR
device can report CSERR
CardBus stop. CSTOP is driven by a CardBus target to request the initiator to stop the current
CardBus transaction. CSTOP
target devices that do not support burst data transfers.
CardBus status change. CSTSCHG alerts the system to a change in the card status, and is
used as a wake-up mechanism.
CardBus target ready . CTRDY indicates the ability of the CardBus target ability to complete the
current data phase of the transaction. A data phase is completed on a rising edge of CCLK,
when both CIRDY and CTRDY are asserted; until this time, wait states are inserted.
CardBus voltage sense 1 and CardBus voltage sense 2. CVS1 and CVS2 are used in
I/O
conjunction with CCD1
the operating voltage and card type.
to the system by assertion of SERR on the PCI interface.
and CCD2 to identify card insertion and interrogate cards to determine
is driven by the card synchronous to CCLK. The PCI1410A
is used for target disconnects, and is commonly asserted by
2–20
3 Feature/Protocol Descriptions
The following sections give an overview of the PCI1410A device. Figure 3–1 shows a simplified block diagram of the
PCI1410A device. The PCI interface includes all address/data and control signals for PCI protocol. The interrupt
interface includes terminals for parallel PCI, parallel ISA, and serialized PCI and ISA signaling. Miscellaneous system
interface terminals include multifunction terminals: SUSPEND
and SPKROUT.
Activity LED
, RI_OUT/PME (power-management control signal),
PCI Bus
INTA
Interrupt
Controller
TPS2211
Power
Switch
PC Card
Socket
External ZV Port
NOTE: The PC Card interface is 68 terminals for CardBus and 16-bit PC Cards. In ZV mode, 23 terminals are used for routing the ZV signals
to the VGA controller and audio subsystem.
4
PCI1410A
68
23
IRQSER
3
PCI930
ZV Switch
PCI950
IRQSER
Deserializer
Zoomed Video
19
Zoomed Video
4
IRQ2–15
VGA
Controller
Audio
Subsystem
Figure 3–1. PCI1410A Simplified Block Diagram
3.1Power-Supply Sequencing
The PCI1410A device contains 3.3-V I/O buffers with 5-V tolerance, requiring a core power supply and clamp
voltages. The core power supply always is 3.3 V. The clamp voltages can be either 3.3 V or 5 V, depending on the
interface. The following power-up and power-down sequences are recommended.
The power-up sequence is:
1. Apply 3.3-V power to the core.
2. Assert GRST
to the device to disable the outputs during power up. Output drivers must be powered up in
the high-impedance state to prevent high current levels through the clamp diodes to the 5-V supply.
3. Apply the clamp voltage.
The power-down sequence is:
1. Use GRST
to switch outputs to a high-impedance state.
2. Remove the clamp voltage.
3. Remove the 3.3-V power from the core.
3–1
3.2I/O Characteristics
Figure 3–2 shows a 3-state bidirectional buffer. Section 8.2, Recommended Operating Conditions, provides the
electrical characteristics of the inputs and outputs.
NOTE: The PCI1410A device meets the ac specifications of the PC Card Standard and PCI
Local Bus Specification.
V
Tied for Open Drain
OE
CCP
Pad
Figure 3–2. 3-State Bidirectional Buffer
NOTE: Unused pins (input or I/O) must be held high or low to prevent them from floating.
3.3Clamping Voltages
The clamping voltages are set to match whatever external environment the PCI1410A device is interfaced with: 3.3 V
or 5 V. The I/O sites can be pulled through a clamping diode to a voltage rail that protects the core from external
signals. The core power supply always is 3.3 V and is independent of the clamping voltages. For example, PCI
signaling can be either 3.3 V or 5 V, and the PCI1410A device must reliably accommodate both voltage levels. This
is accomplished by using a 3.3-V I/O buffer that is 5-V tolerant, with the applicable clamping voltage applied. If a
system designer desires a 5-V PCI bus, V
The PCI1410A device requires three separate clamping voltages because it supports a wide range of features. The
three voltages are listed and defined in Section 8.2, Recommended Operating Conditions.
The PCI1410A device is fully compliant with the PCI Local Bus Specification. The PCI1410A device provides all
required signals for PCI master or slave operation, and can operate in either a 5-V or 3.3-V signaling environment
by connecting the V
device provides the optional interrupt signal INTA
3.4.1PCI Bus Lock (LOCK)
The bus-locking protocol defined in the PCI Local Bus Specification is not highly recommended, but is provided on
the PCI1410A device as an additional compatibility feature. The PCI LOCK
terminal via the multifunction routing register. See Section 4.30, Multifunction Routing Register,
the use of LOCK
PCI LOCK
nonexclusive transactions can proceed to an address that currently is not locked. A grant to start a transaction on
the PCI bus does not guarantee control of LOCK
for different initiators to use the PCI bus while a single master retains ownership of LOCK
signal for this protocol is CBLOCK
An agent may need to do an exclusive operation because a critical access to memory might be broken into several
transactions, but the master wants exclusive rights to a region of memory. The granularity of the lock is defined by
PCI to be 16 bytes, aligned. The LOCK
without interfering with nonexclusive real-time data transfer, such as video.
The PCI bus arbiter may be designed to support only complete bus locks using the LOCK
the arbiter will not grant the bus to any other agent (other than the LOCK
is supported only by PCI-to-CardBus bridges in the downstream direction (away from the processor).
indicates an atomic operation that may require multiple transactions to complete. When LOCK is asserted,
terminals to the desired voltage level. In addition to the mandatory PCI signals, the PCI1410A
CCP
.
signal can be routed to the MFUNC4
for details. Note that
; control of LOCK is obtained under its own protocol. It is possible
. Note that the CardBus
to avoid confusion with the bus clock.
protocol defined by the PCI Local Bus Specification allows a resource lock
protocol. In this scenario,
master) while LOCK is asserted. A complete
3–2
bus lock may have a significant impact on the performance of the video. The arbiter that supports complete bus lock
must grant the bus to the cache to perform a writeback due to a snoop to a modified line when a locked operation
is in progress.
The PCI1410A device supports all LOCK
PCI-to-CardBus bridges. This includes disabling write posting while a locked operation is in progress, which can solve
a potential deadlock when using devices such as PCI-to-PCI bridges. The potential deadlock can occur if a CardBus
target supports delayed transactions and blocks access to the target until it completes a delayed read. This target
characteristic is prohibited by the PCI Local Bus Specification, and the issue is resolved by the PCI master using
LOCK
.
protocol associated with PCI-to-PCI bridges, as also defined for
3.4.2Loading Subsystem Identification
The subsystem vendor ID register (PCI offset 40h, see Section 4.26) and subsystem ID register (PCI offset 42h, see
Section 4.27) make up a doubleword of PCI configuration space located at offset 40h for functions 0 and 1. This
doubleword register is used for system and option card (mobile dock) identification purposes and is required by some
operating systems.
The PCI1410A device offers two mechanisms to load a read-only value into the subsystem registers. The first
mechanism relies upon the system BIOS providing the subsystem ID value. The default access mode to the
subsystem registers is read-only, but can be made read/write by clearing bit 5 (SUBSYSRW) in the system control
register (PCI offset 80h, see Section 4.29). When this bit is cleared, the BIOS can write a subsystem identification
value into the registers at PCI offset 40h. The BIOS must set the SUBSYSRW bit such that the subsystem vendor
ID register and subsystem ID register are limited to read-only access. This approach saves the added cost of
implementing the serial electrically erasable programmable ROM (EEPROM).
In some conditions, such as in a docking environment, the subsystem vendor ID register and subsystem ID register
must be loaded with a unique identifier via a serial EEPROM. The PCI1410A device loads the data from the serial
EEPROM aft e r a r eset of the primary bus. Note that the SUSPEND
core, including the serial bus state machine (see Section 3.8.4, Suspend Mode, for details on using SUSPEND
input gates the PCI reset from the entire PCI1410A
).
The PCI1410A device provides a two-line serial bus host controller that can interface to a serial EEPROM. See
Section 3.6, Serial Bus Interface,
for details on the two-wire serial bus controller and applications.
3.5PC Card Applications
This section describes the PC Card interfaces of the PCI1410A device:
•Card insertion/removal and recognition
2
•P
C power-switch interface
•Zoomed-video (ZV) support
•Speaker and audio applications
•LED socket activity indicators
•PC Card-16 DMA support
•PC Card controller programming model
•CardBus socket registers
3.5.1PC Card Insertion/Removal and Recognition
The PC Card Standard addresses the card-detection and recognition process through an interrogation procedure
that the socket must initiate on card insertion into a cold, nonpowered socket. Through this interrogation, card voltage
requirements and interface (16-bit versus CardBus) are determined.
The scheme uses the card-detect and voltage-sense signals. The configuration of these four terminals identifies the
card type and voltage requirements of the PC Card interface. The encoding scheme is defined in the PC CardStandard and in Table 3–1.
3–3
Table 3–1. PC Card Card-Detect and Voltage-Sense Connections
GroundGroundOpenOpen5 V16-bit PC Card5 V
GroundGroundOpenGround5 V16-bit PC Card5 V and 3.3 V
GroundGroundGroundGround5 V16-bit PC Card5 V, 3.3 V, and X.X V
GroundGroundOpenGroundLV16-bit PC Card3.3 V
GroundConnect to CVS1OpenConnect to CCD1LVCardBus PC Card3.3 V
GroundGroundGroundGroundLV16-bit PC Card3.3 V and X.X V
Connect to CVS2GroundConnect to CCD2GroundLVCardBus PC Card3.3 V and X.X V
Connect to CVS1GroundGroundConnect to CCD2LVCardBus PC Card3.3 V, X.X V, and Y.Y V
GroundGroundGroundOpenLV16-bit PC CardY.Y V
Connect to CVS2GroundConnect to CCD2OpenLVCardBus PC CardY.Y V
GroundConnect to CVS2Connect to CCD1OpenLVCardBus PC CardX.X V and Y.Y V
Connect to CVS1GroundOpenConnect to CCD2LVCardBus PC CardY.Y V
GroundConnect to CVS1GroundConnect to CCD1Reserved
GroundConnect to CVS2Connect to CCD1GroundReserved
3.5.2P2C Power-Switch Interface (TPS2211)
The PCI1410A device provides a P2C (PCMCIA peripheral control) interface for control of the PC Card power switch.
The VCCD
power-switch support. Figure 3–3 shows terminal assignments for the TPS2211 power-switch interface. Figure 3–4
illustrates a typical application, where the PCI1410A device represents the PC Card controller.
and VPPD terminals are used with the TI TPS221 1 single-slot PC Card power-switch interface to provide
VCCD0
VCCD1
3.3V
3.3V
5V
5V
GND
OC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SHDN
VPPD0
VPPD1
AVCC
AVCC
AVCC
AVPP
12V
Figure 3–3. TPS2211 Terminal Assignments
The PCI1410A device also includes support for the Maxim 1602 single-channel CardBus and PCMCIA
power-switching network. Application of this power switch is similar to the TPS2211 power-switch interface.
3–4
Power Supply
12 V
5 V
3.3 V
12V
5V
3.3V
TPS2211
Supervisor
PCI1410A
(PC Card
Controller)
SHDN
SHDN
VCCD0
VCCD1
VPPD0
VPPD1
AVPP
AVCC
V
V
V
V
PP1
PP2
CC
CC
PC Card
Figure 3–4. TPS2211 Typical Application
3.5.3Zoomed-Video Support
The PCI1410A device allows for the implementation of ZV for PC Cards. ZV is supported by setting bit 6 (ZVENABLE)
in the card control register (PCI offset 91h, see Section 4.32) on a per-socket function basis. Setting this bit puts PC
Card 16 address lines ADDR25–ADDR4 of the PC Card interface in the high-impedance state. These lines can then
transfer video and audio data directly to the appropriate controller. Card address lines ADDR3–ADDR0 can still
access PC Card CIS registers for PC Card configuration. Figure 3–5 illustrates a PCI1410A ZV implementation.
CRT
Speakers
Motherboard
PCI Bus
VGA
Controller
Zoomed
Video Port
PCI1410A
Audio
Codec
194
PCM
Audio
Input
PC Card
19
PC Card
Interface
Video
Audio
4
Figure 3–5. Zoomed-Video Implementation Using the PCI1410A Device
Not shown in Figure 3–5 is the multiplexing scheme used to route a socket ZV source or an external ZV source to
the graphics controller. A typical external source might be provided from a high-speed serial bus like IEEE 1394. The
PCI1410A device provides ZVSTAT and ZVSEL0
signals on the multifunction terminals to switch external bus drivers.
Figure 3–6 shows an implementation for switching between two ZV streams using external logic.
3–5
PCI1410A
ZVSTAT
ZVSEL0
Figure 3–6. Zoomed-Video Switching Application
Figure 3–6 illustrates an implementation using standard three-state bus drivers with active-low output enables.
ZVSEL0
is an active-low output indicating that the socket ZV mode is enabled. ZVSTAT is an active-high output,
indicating that the PCI1410A socket is enabled for ZV mode. The implementation shown in Figure 3–6 can be used
if PC Card ZV is prioritized over other sources.
3.5.4Ultrazoomed Video
Ultrazoomed video is an enhancement to the PCI1410A DMA engine and is intended to improve the 16-bit bandwidth
for MPEG I and MPEG II decoder PC Cards. This enhancement allows the PCI1410A device to fetch 32 bits of data
from memory, versus the PCI11XX/PCI12XX 16-bit fetch capability. This enhancement allows a higher sustained
throughput to the 16-bit PC Card because the PCI1410A device prefetches an extra 16 bits (32 bits total) during each
PCI read transaction. If the PCI bus becomes busy, the PCI1410A device has an extra 16 bits of data to perform
back-to-back 16-bit transactions to the PC Card before having to fetch more data. This feature is built into the DMA
engine, and software is not required to enable this enhancement.
NOTE: The PCI11XX and PCI12XX series CardBus controllers have enough 16-bit bandwidth
to support MPEG II PC Card decoders. But, it was decided to improve the bandwidth even more
in the PCI14XX series CardBus controllers.
3.5.5Internal Ring Oscillator
The internal ring oscillator provides an internal clock option for the PCI1410A device so that the PCI clock is not
required for the PCI1410A device to power down a socket or interrogate a PC Card. This internal oscillator operates
nominally at 16 kHz and can be enabled by setting bit 27 (P2CCLK) of the system control register (PCI offset 80h,
see Section 4.29) to 1. This function is disabled by default.
3–6
3.5.6Integrated Pullup Resistors for PC Card Interface
The PC Card Standard requires pullup resistors on various terminals to support both CardBus and 16-bit card
configurations. Unlike the PCI1210 or PCI1211 device, which required external pullup resistors, the PCI1410A device
has integrated all of these pullup resistors.
SPKROUT carries the digital audio signal from the PC Card to the system. When a 16-bit PC Card is configured for
I/O mode, the BVD2 terminal becomes SPKR
is referred to as CAUDIO. SPKR
passes a TTL-level digital audio signal to the PCI1410A device. The CardBus
CAUDIO signal also can pass a single-amplitude binary waveform. The binary audio signal from the PC Card socket
is used in the PCI1410A device to produce SPKROUT. This output is enabled by bit 1 (SPKROUTEN) in the card
control register (PCI offset 91h, see Section 4.32).
. This terminal also is used in CardBus binary audio applications, and
Older controllers support CAUDIO in binary or PWM mode, but use the same terminal (SPKROUT). Some audio chips
may not support both modes on one terminal and may have a separate terminal for binary and PWM. The PCI1410A
implementation includes a signal for PWM, CAUDPWM, which can be routed to an MFUNC terminal. Bit 2
(AUD2MUX), located in the card control register, is programmed to route a CardBus CAUDIO PWM terminal to
CAUDPWM. See Section 4.30, Multifunction Routing Register, for details on configuring the MFUNC terminals.
Figure 3–7 illustrates a sample application using SPKROUT and CAUDPWM.
3–7
System
Core Logic
BINARY_SPKR
Speaker
Subsystem
PWM_SPKR
PCI1410A
SPKROUT
CAUDPWM
Figure 3–7. Sample Application of SPKROUT and CAUDPWM
3.5.8LED Socket Activity Indicators
The socket activity LEDs indicate when a PC Card is being accessed. The LED_SKT signal can be routed to the
multifunction terminals. When configured for LED output, this terminal outputs an active high signal to indicate socket
activity. See Section 4.30, Multifunction Routing Register,
The LED signal is active high and is driven in pulses of 64-ms duration. When the LED is not being driven high, it is
driven to a low state. Either of the two circuits shown in Figure 3–8 can be implemented to provide LED signaling,
and it is left for the board designer to implement the circuit that best fits the application.
The LED activity signals are valid when a card is inserted, powered, and not in reset. For PC Card-16, the LED activity
signal is pulsed when READY/IREQ
or CREQ
is active.
is low. For CardBus cards, the LED activity signal is pulsed if CFRAME, CIRDY,
for details on configuring the multifunction terminals.
Current Limiting
R ≈ 500 Ω
PCI1410A
PCI1410A
Application-
Specific Delay
Current Limiting
R ≈ 500 Ω
LED
LED
Figure 3–8. Two Sample LED Circuits
As indicated, the LED signals are driven for a period of 64 ms by a counter circuit. To avoid the possibility of the LED
appearing to be stuck when the PCI clock is stopped, the LED signaling is cut off when the SUSPEND
signal is
asserted, when the PCI clock is to be stopped during the clock run protocol, or when in the D2 or D1 power state.
If any additional socket activity occurs during this counter cycle, the counter is reset and the LED signal remains
driven. If socket activity is frequent (at least once every 64 ms), the LED signal remains driven.
3.5.9PC Card-16 Distributed DMA Support
The PCI1410A device supports a distributed DMA slave engine for 16-bit PC Card DMA support. The distributed DMA
(DDMA) slave register set provides the programmability necessary for the slave DMA engine. Table 3–2 provides the
DMA register configuration.
Two socket function-dependent PCI configuration header registers that are critical for DMA are the socket DMA
register 0 (PCI offset 94h, see Section 4.35) and the socket DMA register 1 (PCI offset 98h, see Section 4.36).
3–8
Distributed DMA is enabled through socket DMA register 0, and the contents of this register configure the PC Card-16
terminal (SPKR
, IOIS16, or INPACK), which is used for the DMA request signal, DREQ. The base address of the DMA
slave registers and the transfer size (bytes or words) are programmed through the socket DMA register 1. See the
programming model and register descriptions in Section 7 for details.
Table 3–2. Distributed DMA Registers
DMA
TYPEREGISTER NAME
R
W
R
W
RN/A
WMode
RMultichannel
WMask
ReservedPage
ReservedReserved
Reserved
Reserved
Master clear
Current address
Base address
Current count
Base count
N/AStatus
RequestCommand
N/A
Reserved0Ch
BASE ADDRESS
OFFSET
00h
04h
08h
The DMA registers contain control and status information consistent with the 8237 DMA controller; however, the
register locations are reordered and expanded in some cases. While the DMA register definitions are identical to
those of the same name in the 8237 DMA controller, some register bits defined in the 8237 DMA controller do not
apply to distributed DMA in a PCI environment. In such cases, the PCI1410A device implements these obsolete
register bits as read-only, nonfunctional bits. The reserved registers shown in Table 3–2 are implemented as
read-only and return 0s when read. Write transactions to reserved registers have no effect.
The DMA transfer is prefaced by several configuration steps that are specific to the PC Card and must be completed
after the PC Card is inserted and interrogated. These steps include setting the proper DREQ
signal assignment,
setting the data transfer width, and mapping and enabling the DMA register set. As discussed above, this is done
through socket DMA register 0 and socket DMA register 1. The DMA register set is then programmed similarly to an
8237 controller, and the PCI1410A device awaits a DREQ
assertion from the PC Card requesting a DMA transfer.
DMA writes transfer data from the PC Card-to-PCI memory addresses. The PCI1410A device accepts data 8 or
16 bits at a time, depending on the programmed data width, and then requests access to the PCI bus by asserting
its REQ signal. Once the PCI bus is granted in an idle state, the PCI1410A device initiates a PCI memory write
command to the current memory address and transfers the data in a single data phase. After terminating the PCI
cycle, the PCI1410A device accepts the next byte(s) from the PC Card until the transfer count expires.
DMA reads transfer data from PCI memory addresses to the PC Card application. Upon the assertion of DREQ
PCI1410A device asserts REQ
to acquire the PCI bus. Once the bus is granted in an idle state, the PCI1410A device
, the
initiates a PCI memory read operation to the current memory address and accepts 8 or 16 bits of data, depending
on the programmed data width. After terminating the PCI cycle, the data is passed on to the PC Card. After terminating
the PC Card cycle, the PCI1410A device requests access to the PCI bus again, until the transfer count has expired.
The PCI1410A target interface acts normally during this procedure and accepts I/O reads and writes to the DMA
registers. While a DMA transfer is in progress and the host resets the DMA channel, the PCI1410A device asserts
TC and ends the PC Card cycle(s). TC is indicated in the DMA status register (DMA offset 08h, see Section 7.5). At
the PC Card interface, the PCI1410A device supports demand mode transfers. The PCI1410A device asserts DACK
during the transfer unless DREQ
operations and is mapped to the WE
PC Card REG
signal in all transfers, and the DREQ terminal is routed to one of three options, which is programmed
is deasserted before TC. TC is mapped to the OE PC Card terminal for DMA write
PC Card terminal for DMA read operations. The DACK signal is mapped to the
through socket DMA register 0.
3–9
3.5.10 PC Card-16 PC/PCI DMA
DMA CHANNEL
Some chip sets provide a way for legacy I/O devices to do DMA transfers on the PCI bus. In the PC/PCI DMA protocol,
the PCI1410A device acts as a PCI target device to certain DMA-related I/O addresses. The PCI1410A PCREQ
PCGNT
PCGNT
Routing Register,
signals are provided as a point-to-point connection to a chipset supporting PC/PCI DMA. The PCREQ and
signals may be routed to the MFUNC2 and MFUNC5 terminals, respectively . See Section 4.30, Multifunction
for details on configuring the multifunction terminals.
Under the PC/PCI protocol, a PCI DMA slave device (such as the PCI1410A device) requests a DMA transfer on a
particular channel using a serialized protocol on PCREQ
grants the channel through a serialized protocol on PCGNT
. The I/O DMA bus master arbitrates for the PCI bus and
when it is ready for the transfer. The I/O cycle and memory
cycles are then presented on the PCI bus, which performs the DMA transfers similarly to legacy DMA master devices.
PC/PCI DMA is enabled for each PC Card-16 slot by setting bit 19 (CDREQEN) in the respective system control
register (PCI o ffset 80h, see Section 4.29). On power up, this bit is reset and the card PC/PCI DMA is disabled. Bit 3
(CDMA_EN) of the system control register is a global enable for PC/PCI DMA, and is set at power up and never
cleared if the PC/PCI DMA mechanism is implemented. The desired DMA channel for each PC Card-16 slot must
be configured through bits 18–16 (CDMACHAN field) in the system control register. The channels are configured as
indicated in Table 3–3.
As in distributed DMA, the PC Card terminal mapped to DREQ must be configured through socket DMA register 0
(PCI offset 94h, see Section 4.35). The data transfer width is a function of channel number, and the DMA slave
registers are not used. When a DREQ
device decodes the I/O addresses listed in Table 3–4 and performs actions dependent upon the address.
When the PC/PCI DMA is used as a PC Card-16 DMA mechanism, it may not provide the performance levels of DMA;
however, the design of a PCI target implementing PC/PCI DMA is considerably less complex. No bus master state
machine is required to support PC/PCI DMA, since the DMA control is centralized in the chipset. This DMA scheme
often is referred to as centralized DMA for this reason.
3.5.11 CardBus Socket Registers
The PCI1410A device contains all registers for compatibility with the PC Card Standard. These registers exist as the
CardBus socket registers and are listed in Table 3–5.
3–10
is received from a PC Card and the channel has been granted, the PCI1410A
Table 3–4. I/O Addresses Used for PC/PCI DMA
DMA I/O ADDRESSDMA CYCLE TYPETERMINAL COUNTPCI CYCLE TYPE
Socket event00h
Socket mask04h
Socket present state08h
Socket force event0Ch
Socket control10h
Reserved14h
Reserved18h
Reserved1Ch
Socket power management20h
The PCI1410A device provides a serial bus interface to load subsystem identification and select register defaults
through a serial EEPROM and to provide a PC Card power switch interface alternative to P
2
P
C Power-Switch Interface (TPS2211), for details. The PCI1410A serial bus interface is compatible with various I2C
2
C. See Section 3.5.2,
and SMBus components.
3.6.1Serial Bus-Interface Implementation
To enable the serial interface, a pullup resistor must be implemented on the VCCD0 and VCCD1 terminals and the
appropriate pullup resistors must be implemented on the SDA and SCL signals, that is, the MFUNC1 and MFUNC4
terminals. When the interface is detected, bit 3 (SBDETECT) in the serial bus control and status register (PCI offset
B3h, see Section 4.50) is set. The SBDETECT bit is cleared by a writeback of 1.
The PCI1410A device implements a two-pin serial interface with one clock signal (SCL) and one data signal (SDA).
When pullup resistors are provided on the VCCD0
terminal and the SDA signal is mapped to the MFUNC1 terminal. The PCI1410A device drives SCL at nearly 100 kHz
during data transfers, which is the maximum specified frequency for standard-mode I
be located at address A0h. Figure 3–9 illustrates an example application implementing the two-wire serial bus.
Serial
EEPROM
A2
A1
A0
SCL
SDA
and VCCD1 terminals, the SCL signal is mapped to the MFUNC4
2
C. The serial EEPROM must
V
CC
PCI1410A
VCCD0
VCCD1
MFUNC4
MFUNC1
5 V
Figure 3–9. Serial EEPROM Application
Some serial device applications may include PC Card power switches, ZV source switches, card ejectors, or other
devices that may enhance the user’s PC Card experience. The serial EEPROM device and PC Card power switches
are discussed in the sections that follow.
3.6.2Serial Bus-Interface Protocol
The SCL and SDA signals are bidirectional, open-drain signals and require pullup resistors as shown in Figure 3–9.
The PCI1410A device supports up to 100-Kb/s data transfer rate and is compatible with standard-mode I
7-bit addressing.
2
C using
3–11
All data transfers are initiated by the serial bus master. The beginning of a data transfer is indicated by a start
condition, which is signaled when the SDA line transitions to a low state while SCL is in the high state, as illustrated
in Figure 3–10. The end of a requested data transfer is indicated by a stop condition, which is signaled by a low-to-high
transition of SDA while SCL is in the high state, as shown in Figure 3–10. Data on SDA must remain stable during
the high state of the SCL signal, as changes on the SDA signal during the high state of SCL are interpreted as control
signals, that is, a start or a stop condition.
SDA
SCL
Start
Condition
Stop
Condition
Data Line Stable,
Data Valid
Change of
Data Allowed
Figure 3–10. Serial Bus Start/Stop Conditions and Bit Transfers
Data is transferred serially in 8-bit bytes. The number of bytes that can be transmitted during a data transfer is
unlimited; however, each byte must be completed with an acknowledge bit. An acknowledge (ACK) is indicated by
the receiver pulling the SDA signal low so that it remains low during the high state of the SCL signal. Figure 3–11
illustrates the acknowledge protocol.
SCL From
Master
SDA Output
By Transmitter
SDA Output
By Receiver
123789
Figure 3–11. Serial Bus-Protocol Acknowledge
The PCI1410A device is a serial bus master; all other devices connected to the serial bus external to the PCI1410A
device are slave devices. As the bus master, the PCI1410A device drives the SCL clock at nearly 100 kHz during
bus cycles and places SCL in a high-impedance state (zero frequency) during idle states.
Typically, the PCI1410A device masters byte reads and byte writes under software control. Doubleword reads are
performed by the serial EEPROM initialization circuitry upon a PCI reset, and may not be generated under software
control. See Section 3.6.3, Serial Bus EEPROM Application, for details on how the PCI1410A device automatically
loads the subsystem identification and other register defaults through a serial bus EEPROM.
Figure 3–12 illustrates a byte write. The PCI1410A device issues a start condition and sends the 7-bit slave device
address and the command bit 0. A 0 in the R/W
command bit indicates that the data transfer is a write. The slave
device acknowledges if it recognizes the address. If there is no acknowledgment received by the PCI1410A device,
an appropriate status bit is set in the serial bus control and status register (PCI offset B3h, see Section 4.50). The
word address byte is then sent by the PCI1410A device and another slave acknowledgment is expected. The
PCI1410A device then delivers the data byte, MSB first, and expects a final acknowledgment before issuing the stop
condition.
Figure 3–13 illustrates a byte read. The read protocol is very similar to the write protocol, except the R/W
command
bit must be set to 1 to indicate a read-data transfer. In addition, the PCI1410A master must acknowledge reception
of the read bytes from the slave transmitter. The slave transmitter drives the SDA signal during read data transfers.
The SCL signal remains driven by the PCI1410A master.
Figure 3–14. EEPROM Interface Doubleword Data Collection
3.6.3Serial Bus EEPROM Application
When the PCI bus is reset and the serial bus interface is detected, the PCI1410A device attempts to read the
subsystem identification and other register defaults from a serial EEPROM. The registers and corresponding bits that
may be loaded with defaults through the EEPROM are provided in Table 3–6.
Table 3–6. Registers and Bits Loadable Through Serial EEPROM
Figure 3–15 details the EEPROM data format. This format must be followed for the PCI1410A device to properly load
initializations from a serial EEPROM. Any undefined condition results in a terminated load and sets bit 0 (ROM_ERR)
in the serial bus control and status register (PCI offset B3h, see Section 4.50).
The byte at the EEPROM word address 00h must contain either a valid offset reference, as listed in Table 3–6, or
an end-of-list (EOL) indicator. The EOL indicator has a byte value of FFh, and indicates the end of the data to load
from the EEPROM. Only doubleword registers are loaded from the EEPROM, and all bit fields must be considered
when programming the EEPROM.
The serial EEPROM is addressed at slave address 1010 000b by the PCI1410A device. All hardware address bits
for the EEPROM should be tied to the appropriate level to achieve this address. The serial EEPROM chip in the
sample application circuit (Figure 3–9) assumes the 1010b high address nibble. The lower three address bits are
terminal inputs to the chip, and the sample application shows these terminal inputs tied to GND.
When a valid offset reference is read, four bytes are read from the EEPROM, MSB first, as illustrated in Figure 3–14.
The address autoincrements after every byte transfer according to the doubleword read protocol. Note that the word
addresses align with the data format illustrated in Figure 3–15. The PCI1410A device continues to load data from
the serial EEPROM until an end-of-list indicator is read. Three reserved bytes are stuffed to maintain 8-byte data
structures.
Note, the 8-byte data structure is important to provide correct addressing per the doubleword read format shown in
Figure 3–14. In addition, the reference offsets must be loaded in the EEPROM in sequential order, that is, 01h, 02h,
03h, 04h. If the offsets are not sequential, the registers will be loaded incorrectly.
3.6.4Accessing Serial Bus Devices Through Software
The PCI1410A device provides a programming mechanism to control serial bus devices through software. The
programming is accomplished through a doubleword of PCI configuration space at offset B0h. Table 3–7 lists the
registers used to program a serial bus device through software.
3–14
Table 3–7. PCI1410A Registers Used to Program Serial Bus Devices
PCI OFFSETREGISTER NAMEDESCRIPTION
B0hSerial bus dataContains the data byte to send on write commands or the received data byte on read commands
B1hSerial bus index
B2h
B3h
Serial bus slave
address
Serial bus control
and status
The content of this register is sent as the word address on byte writes or reads. This register is not used
in the quick command protocol.
Write transactions to this register initiate a serial bus transaction. The slave device address and the R/W
command selector are programmed through this register.
Read data valid, general busy, and general error status are communicated through this register. In
addition, the protocol select bit is programmed through this register.
To write a byte, the serial bus data register must be programmed with the data, the serial bus index register must be
programmed with t h e b yte address, and the serial bus slave address register must be programmed with the 7-bit slave
address (SLAVADDR field) and bit 0 (RWCMD) must be reset.
On byte reads, the byte address is programmed into the serial bus index register, the serial bus slave address register
must be programmed with the 7-bit slave address (SLAVADDR field) and bit 0 (RWCMD) must be set, and bit 5
(REQBUSY) in the serial bus control and status register (PCI offset B3h, see Section 4.50) must be polled until clear.
Then the contents of the serial bus data register are valid read data from the serial bus interface.
3.7Programmable Interrupt Subsystem
Interrupts provide a way for I/O devices to let the microprocessor know that they require servicing. The dynamic
nature of PC Cards and the abundance of PC Card I/O applications require substantial interrupt support from the
PCI1410A device. The PCI1410A device provides several interrupt signaling schemes to accommodate the needs
of a variety of platforms. The different mechanisms for dealing with interrupts in this device are based on various
specifications and industry standards. The ExCA register set provides interrupt control for some 16-bit PC Card
functions, and the CardBus socket register set provides interrupt control for the CardBus PC Card functions. The
PCI1410A device is, therefore, backward compatible with existing interrupt control register definitions, and new
registers have been defined where required.
The PCI1410A device detects PC Card interrupts and events at the PC Card interface and notifies the host controller,
using one of several interrupt signaling protocols. To simplify the discussion of interrupts in the PCI1410A device,
PC Card interrupts are classified either as card status change (CSC) or as functional interrupts.
The method by which any type of PCI1410A interrupt is communicated to the host interrupt controller varies from
system to system. The PCI1410A device offers system designers the choice of using parallel PCI interrupt signaling,
parallel ISA-type IRQ interrupt signaling, or the IRQSER serialized ISA and/or PCI interrupt protocol. It is possible
to use the parallel PCI interrupts in combination with either parallel IRQs or serialized IRQs, as detailed in the sections
that follow. All interrupt signaling is provided through the seven multifunction terminals, MFUNC0–MFUNC6.
3.7.1PC Card Functional and Card Status Change Interrupts
PC Card functional interrupts are defined as requests from a PC Card application for interrupt service and are
indicated by asserting specially defined signals on the PC Card interface. Functional interrupts are generated by
16-bit I/O PC Cards and by CardBus PC Cards.
Card status change (CSC)-type interrupts are defined as events at the PC Card interface that are detected by the
PCI1410A device, and may warrant notification of host card and socket services software for service. CSC events
include both card insertion and removal from PC Card sockets, as well as transitions of certain PC Card signals.
Table 3–8 summarizes the sources of PC Card interrupts and the type of card associated with them. CSC and
functional int e r r u p t sources are dependent on the type of card inserted in the PC Card socket. The three types of cards
that can be inserted into any PC Card socket are:
•16-bit memory cards
•16-bit I/O cards
•CardBus cards
3–15
Functional interrupt events are valid only for 16-bit I/O and CardBus cards; that is, the functional interrupts are not
Battery conditions
memory
All PC Cards
valid for 16-bit memory cards. Furthermore, card insertion and removal-type CSC interrupts are independent of the
card type.
Table 3–8. PC Card Interrupt Events and Description
CARD TYPEEVENTTYPESIGNALDESCRIPTION
A transition on BVD1 indicates a change in the
PC Card battery conditions.
A transition on BVD2 indicates a change in the
PC Card battery conditions.
A transition on READY indicates a change in the ability
of the memory PC Card to accept or provide data.
The assertion of STSCHG indicates a status change
on the PC Card.
The assertion of IREQ indicates an interrupt request
from the PC Card.
The assertion of CSTSCHG indicates a status change
on the PC Card.
The assertion of CINT indicates an interrupt request
from the PC Card.
A transition on either CD1//CCD1 or CD2//CCD2
indicates an insertion or removal of a 16-bit or CardBus
PC Card.
An interrupt is generated when a PC Card power-up
cycle has completed.
16-bit
memory
16-bit I/O
CardBus
All PC Cards
Battery conditions
(BVD1, BVD2)
Wait states
(READY)
Change in card
status (STSCHG)
Interrupt request
(IREQ)
Change in card
status (CSTSCHG)
Interrupt request
(CINT
)
Card insertion
or removal
Power cycle
complete
BVD1(STSCHG)//CSTSCHG
CSC
BVD2(SPKR)//CAUDIO
CSCREADY(IREQ)//CINT
CSCBVD1(STSCHG)//CSTSCHG
FunctionalREADY(IREQ)//CINT
CSCBVD1(STSCHG)//CSTSCHG
FunctionalREADY(IREQ)//CINT
CSC
CSCN/A
CD1//CCD1,
CD2
//CCD2
The naming convention for PC Card signals describes the function for 16-bit memory, I/O cards, and CardBus. For
example, READY(IREQ
)//CINT includes READY for 16-bit memory cards, IREQ for 16-bit I/O cards, and CINT for
CardBus cards. The 16-bit memory card signal name is first, with the I/O card signal name second, enclosed in
parentheses. The CardBus signal name follows after a double slash (//).
The PC Card Standard describes the power-up sequence that must be followed by the PCI1410A device when an
insertion event occurs and the host requests that the socket V
and VPP be powered. Upon completion of this
CC
power-up sequence, the PCI1410A interrupt scheme can be used to notify the host system (see Table 3–8), denoted
by the power cycle complete event. This interrupt source is considered a PCI1410A internal event because it depends
on the completion of applying power to the socket rather than on a signal change at the PC Card interface.
3.7.2Interrupt Masks and Flags
Host software may individually mask (or disable) most of the potential interrupt sources listed in Table 3–8 by setting
the appropriate bits in the PCI1410A device. By individually masking the interrupt sources listed, software can control
those events that cause a PCI1410A interrupt. Host software has some control over the system interrupt the
PCI1410A device asserts by programming the appropriate routing registers. The PCI1410A device allows host
software to route PC Card CSC and PC Card functional interrupts to separate system interrupts. Interrupt routing is
somewhat specific to the interrupt signaling method used. This is discussed in more detail in the following sections.
When an interrupt is signaled by the PCI1410A device, the interrupt service routine must determine which of the
events listed in Table 3–9 caused the interrupt. Internal registers in the PCI1410A device provide flags that report the
source of an interrupt. By reading these status bits, the interrupt service routine can determine the action to be taken.
Table 3–9 details the registers and bits associated with masking and reporting potential interrupts. All interrupts can
be masked, except the functional PC Card interrupts, and an interrupt status flag is available for all types of interrupts.
3–16
Table 3–9. Interrupt Mask and Flag Registers
16 bit
CARD TYPEEVENTMASKFLAG
16-bit
memory
16-bit I/O
All 16-bit
PC Cards
CardBus
Battery conditions
(BVD1, BVD2)
Wait states
(READY)
Change in card status
(STSCHG
Interrupt request
Power cycle complete
Change in card status
(CSTSCHG)
Interrupt request
Power cycle complete
Card insertion or
removal
(IREQ
(CINT
)
)
)
ExCA offset 05h/805h
bits 1 and 0
ExCA offset 05h/805h
bit 2
ExCA offset 05h/805h
bit 0
Always enabled
ExCA offset 05h/805h
bit 3
Socket mask
bit 0
Always enabled
Socket mask
bit 3
Socket mask
bits 2 and 1
ExCA offset 04h/804h
bits 1 and 0
ExCA offset 04h/804h
bit 2
ExCA offset 04h/804h
bit 0
PCI configuration offset 91h
bit 0
ExCA offset 04h/804h
bit 3
Socket event
bit 0
PCI configuration offset 91h
bit 0
Socket event
bit 3
Socket event
bits 2 and 1
Notice that there is not a mask bit to stop the PCI1410A device from passing PC Card functional interrupts through
to the appropriate interrupt scheme. These interrupts are not valid until the card is properly powered, and there never
should be a card interrupt that does not require service after proper initialization.
Table 3–9 lists the various methods of clearing the interrupt flag bits. The flag bits in the ExCA registers (16-bit PC
Card-related interrupt flags) can be cleared using two different methods. One method is an explicit write of 1 to the
flag bit to clear, and the other is by reading the flag bit register. The selection of flag bit clearing is made by bit 2
(IFCMODE) in the ExCA global control register (ExCA offset 1Eh, see Section 5.20) and defaults to the flag clearedon read method.
The CardBus-related interrupt flags can be cleared by an explicit write of 1 to the interrupt flag in the socket force event
register (CardBus offset 0Ch, see Section 6.4). Although some of the functionality is shared between the CardBus
registers and the ExCA registers, software should not program the chip through both register sets when a CardBus
card is functioning.
3.7.3Using Parallel IRQ Interrupts
The seven multifunction terminals, MFUNC6–MFUNC0, implemented in the PCI1410A device may be routed to
obtain a subset of the ISA IRQs . The IRQ choices provide ultimate flexibility in PC Card host interruptions. To use
the parallel ISA type IRQ interrupt signaling, software must program the device control register (PCI offset 92h, see
Section 4.33), to select the parallel IRQ signaling scheme. See Section 4.30, Multifunction Routing Register, for
details on configuring the multifunction terminals.
A system using parallel IRQs requires a minimum of one PCI terminal, INTA
is dictated by certain card and socket services software. The INTA
for INTA
signaling. This leaves (at a maximum) six different IRQs to support legacy 16-bit PC Card functions.
requirement calls for routing the MFUNC0 terminal
As an example, suppose the six IRQs used by legacy PC Card applications are IRQ3, IRQ4, IRQ5, IRQ10, IRQ11,
and IRQ15. The multifunction routing register must be programmed to a value of 0FBA 5432h. This value routes the
MFUNC0 terminal to INTA
that INTA
also must be routed to the programmable interrupt controller (PIC), or to some circuitry that provides parallel
signaling and routes the remaining terminals as illustrated in Figure 3–16. Not shown is
PCI interrupts to the host.
, to signal CSC events. This requirement
3–17
PCI1410APIC
MFUNC1
MFUNC2
MFUNC3
MFUNC4
MFUNC5
MFUNC6
IRQ3
IRQ4
IRQ5
IRQ10
IRQ11
IRQ15
Figure 3–16. IRQ Implementation
Power-on software is responsible for programming the multifunction routing register to reflect the IRQ configuration
of a system implementing the PCI1410A device. See Section 4.30, Multifunction Routing Register,
for details on
configuring the multifunction terminals.
The parallel ISA-type IRQ signaling from the MFUNC6–MFUNC0 terminals is compatible with those input directly into
the 8259 PIC. The parallel IRQ option is provided for system designs that require legacy ISA IRQs. Design constraints
may demand more MFUNC6–MFUNC0 IRQ terminals than the PCI1410A device makes available.
3.7.4Using Parallel PCI Interrupts
Parallel PCI interrupts are available when exclusively in parallel PCI interrupt mode, parallel ISA IRQ signaling mode,
and when only IRQs are serialized with the IRQSER protocol. The socket function interrupts are routed to INTA
(MFUNC0).
3.7.5Using Serialized IRQSER Interrupts
The serialized interrupt protocol implemented in the PCI1410A device uses a single terminal to communicate all
interrupt status information to the host controller. The protocol defines a serial packet consisting of a start cycle,
multiple interrupt indication cycles, and a stop cycle. All data in the packet is synchronous with the PCI clock. The
packet data describes 16 parallel ISA IRQ signals and the optional 4 PCI interrupts INTA
, INTB, INTC, and INTD. For
details on the IRQSER protocol, refer to the document Serialized IRQ Support for PCI Systems.
3.7.6SMI Support in the PCI1410A Device
The PCI1410A device provides a mechanism for interrupting the system when power changes have been made to
the PC Card socket interfaces. The interrupt mechanism is designed to fit into a system maintenance interrupt (SMI)
scheme. SMI interrupts are generated by the PCI1410A device, when enabled, after a write cycle to either the socket
control register (CardBus offset 10h, see Section 6.5) of the CardBus register set or the ExCA power control register
(ExCA of fs et 02h, see Section 5.3) causes a power cycle change sequence to be sent on the power-switch interface.
The SMI control is programmed through three bits in the system control register (PCI offset 80h, see Section 4.29).
These bits are SMIROUTE (bit 26), SMISTATUS (bit 25), and SMIENB (bit 24). Table 3–10 describes the SMI control
bits function.
Table 3–10. SMI Control
BIT NAMEFUNCTION
SMIROUTEThis shared bit controls whether the SMI interrupts are sent as a CSC interrupt or as IRQ2.
SMISTATUSThis socket-dependent bit is set when an SMI interrupt is pending. This status flag is cleared by writing back a 1.
SMIENBWhen set, SMI interrupt generation is enabled.
If CSC SMI interrupts are selected, the SMI interrupt is sent as the CSC. The CSC interrupt can be either level or edge
mode, depending upon bit 1 (CSCMODE) in the ExCA global control register (ExCA offset 1Eh, see Section 5.20).
If IRQ2 is selected by SMIROUTE, the IRQSER signaling protocol supports SMI signaling in the IRQ2 IRQ/Data slot.
In a parallel ISA IRQ system, the support for an active low IRQ2 is provided only if IRQ2 is routed to either MFUNC1,
MFUNC3, or MFUNC6 through the multifunction routing register (PCI offset 8Ch, see Section 4.30).
3–18
3.8Power-Management Overview
In addition to the low-power CMOS technology process used for the PCI1410A device, various features are designed
into the device to allow implementation of popular power-saving techniques. These features and techniques are
discussed in this section.
3.8.1Clock-Run Protocol
The PCI CLKRUN feature is the primary method of power management on the PCI interface of the PCI1410A device.
CLKRUN
this is not always available to the system designer, and alternate power-saving features are provided. For details on
the CLKRUN
The PCI1410A device does not permit the central resource to stop the PCI clock under any of the following conditions:
The PCI1410A device restarts the PCI clock using the CLKRUN protocol under any of the following conditions:
signaling is provided through the MFUNC6 terminal. Because some chipsets do not implement CLKRUN,
protocol see the PCI Mobile Design Guide.
•Bit 1 (KEEPCLK) in the system control register (PCI offset 80h, see Section 4.29) is set.
•The PC Card-16 resource manager is busy.
•The PCI1410A CardBus master state machine is busy. A cycle may be in progress on CardBus.
•The PCI1410A master is busy. There may be posted data from CardBus to PCI in the PCI1410A device.
•Interrupts are pending.
•The CardBus CCLK for either socket has not been stopped by the PCI1410A CCLKRUN
•A PC Card-16 IREQ or a CardBus CINT
•A CardBus CBWAKE (CSTSCHG) or PC Card-16 STSCHG
•A CardBus attempts to start the CCLK using CCLKRUN
•A CardBus card arbitrates for the CardBus bus using CREQ
•A 16-bit DMA PC Card asserts DREQ
has been asserted.
/RI event occurs.
.
.
.
manager.
3.8.2CardBus PC Card Power Management
The PCI1410A device implements its own card power-management engine that can turn off CCLK to a socket when
there is no activity to the CardBus PC Card. The PCI clock-run protocol is followed on the CardBus CCLKRUN
interface to control this clock management.
3.8.316-Bit PC Card Power Management
Bit 7 (COE) in the ExCA power control register (ExCA offset 02h, see Section 5.3) and bit 0 (PWRDWN) in the ExCA
global control register (ExCA offset 1Eh, see Section 5.20) are provided for 16-bit PC Card power management. The
COE bit places the card interface in a high-impedance state to save power. The power savings when using this feature
are minimal. The COE bit will reset the PC Card when used, and the PWRDWN bit will not. Furthermore, the
PWRDWN bit is an automatic COE, that is, the PWRDWN performs the COE function when there is no card activity.
NOTE: The 16-bit PC Card must implement the proper pullup resistors for the COE and
PWRDWN modes.
3–19
3.8.4Suspend Mode
The SUSPEND signal, provided for backward compatibility, gates the PRST (PCI reset) signal and the GRST (global
reset) signal from the PCI1410A device. Besides gating PRST
PCI1410A device to minimize power consumption.
Gating PCLK does not create any issues with respect to the power-switch interface in the PCI1410A device. This is
because the PCI1410A device does not depend on the PCI clock to clock the power-switch interface. There are two
methods to clock the power-switch interface in the PCI1410A device:
•Use an external clock to the PCI1410A PCLK terminal.
•Use the internal oscillator.
and GRST, SUSPEND also gates PCLK inside the
It also should be noted that asynchronous signals, such as card status-change interrupts and RI_OUT
, can be passed
to the host system without a PCI clock. However, if card status-change interrupts are routed over the serial interrupt
stream, the PCI clock must be restarted to pass the interrupt, because neither the internal oscillator nor an external
clock is routed to the serial interrupt state machine. Figure 3–17 shows the suspend logic diagram.
xRST
SUSPEND
GNT
PCLK
SUSPENDIN
xRSTIN
PCI1410A
Core
PCLKIN
Figure 3–17. Suspend Logic Diagram
Figure 3–18 is a signal diagram of the suspend function.
3–20
xRST
GNT
SUSPEND
PCLK
xRSTIN
SUSPENDIN
PCLKIN
External Terminals
Internal Signals
Figure 3–18. Signal Diagram of Suspend Function
3.8.5Requirements for Suspend Mode
The suspend mode prevents the clearing of all register contents on the assertion of reset (PRST or GRST) that would
require the reconfiguration of the PCI1410A device by software. Asserting the SUSPEND
signal places the controller
PCI outputs in a high-impedance state and gates the PCLK signal internally to the controller unless a PCI transaction
currently is in process (GNT
SUSPEND
is asserted, because the outputs are in a high-impedance state.
The GPIOs, MFUNC signals, and RI_OUT
is asserted). It is important that the PCI bus not be parked on the PCI1410A device when
signals are all active during SUSPEND, unless they are disabled in the
appropriate PCI1410A registers.
3.8.6Ring Indicate
The RI_OUT output is an important feature in power management, allowing a system to go into a suspended mode
and wake up on modem rings and other card events. TI-designed flexibility permits this signal to fit wide platform
requirements. RI_OUT
•A 16-bit PC Card modem in a powered socket asserts RI
incoming call.
•A powered-down CardBus card asserts CSTSCHG (CBWAKE), requesting system and interface wake-up.
•A powered CardBus card asserts CSTSCHG from the insertion/removal of cards or change in battery
voltage levels.
on the PCI1410A device can be asserted under any of the following conditions:
to indicate to the system the presence of an
Figure 3–19 shows various enable bits for the PCI1410A RI_OUT
function; however, it does not show the masking
of CSC events. See Table 3–9 for a detailed description of CSC interrupt masks and flags.
3–21
RI_OUT Function
PC Card
Socket
Card
I/F
CSTSMASK
RINGEN
CDRESUME
RIENB
RI_OUT
Figure 3–19. RI_OUT Functional Diagram
from the 16-bit PC Card interface is masked by bit 7 (RINGEN) in the ExCA interrupt and general control register
RI
(ExCA offset 03h, see Section 5.4). This is programmed on a per-socket basis and is applicable only when a 16-bit
card is powered in the socket.
The CBWAKE, signaling to RI_OUT
, is enabled through the same mask as the CSC event for CSTSCHG. The mask
bit (bit 0, CSTSMASK) is programmed through the socket mask register (CardBus offset 04h, see Section 6.2) in the
CardBus socket registers.
3.8.7PCI Power Management
The PCI Bus Power Management Interface Specification for PCI to CardBus Bridges establishes the infrastructure
required for the operating system to control the power of PCI functions. This is done by defining a standard PCI
interface and operations to manage the power of PCI functions on the bus. The PCI bus and the PCI functions can
be assigned one of four software-visible power-management states that result in varying levels of power savings.
The four power-management states of PCI functions are:
•D0 – Fully-on state
•D1 and D2 – Intermediate states
•D3 – Off state
Similarly , b u s power states of the PCI bus are B0–B3. The bus power states B0–B3 are derived from the device power
state of the originating bridge device.
For the operating system (OS) to manage the device power states on the PCI bus, the PCI function must support four
power-management operations. These operations are:
•Capabilities reporting
•Power status reporting
•Setting the power state
•System wake-up
The OS identifies the capabilities of the PCI function by traversing the new capabilities list. The presence of
capabilities, in addition to the standard PCI capabilities, is indicated by a 1 in bit 4 (CAPLIST) of the status register
(PCI offset 06h, see Section 4.5).
The capabilities pointer provides access to the first item in the linked list of capabilities. For the PCI1410A device,
a CardBus bridge with PCI configuration space header type 2, the capabilities pointer is mapped to an offset of 14h.
The first byte of each capability register block is required to be a unique ID of that capability. PCI power management
has been assigned an ID of 01h. The next byte is a pointer to the next pointer item in the list of capabilities. If there
are no more items in the list, the next item pointer should be set to 0. The registers following the next item pointer
are specific to the capabilities of their corresponding power-management functions. The PCI power-management
capability implements the register block outlined in Table 3–11.
3–22
Table 3–11. Power-Management Registers
REGISTER NAMEOFFSET
Power management capabilitiesNext-item pointerCapability IDA0h
PM dataPMCSR bridge support extensionsPower management control/statusA4h
The power management capabilities register (PCI offset A2h, see Section 4.39) provides information on the
capabilities of the function related to power management. The power management control/status register (PCI offset
A4h, see Section 4.40) enables control of power management states and enables/monitors power management
events. The data register is an optional register that can provide dynamic data.
For more information on PCI power management, see the PCI Bus Power Management Interface Specification forPCI to CardBus Bridges.
3.8.8CardBus Device Class Power Management
The PCI Bus Power Management Interface Specification for PCI to CardBus Bridges was approved by PCMCIA in
December of 1997. This specification follows the device and bus state definitions provided in the PCI Bus PowerManagement Interface Specification published by the PCI Special Interest Group (SIG). The main issue addressed
in the PCI Bus Power Management Interface Specification for PCI to CardBus Bridges is wake-up from D3
without losing wake-up context (also called PME context).
The specific issues addressed by the PCI Bus Power Management Interface Specification for PCI to CardBus Bridges
for D3 wake up are as follows:
•Preservation of device context: The specification states that a reset must occur when transitioning from D3
to D0. Some method to preserve wake-up context must be implemented so that the reset does not clear
the PME
context registers.
hot
or D3
cold
•Power source in D3
if wake-up support is required from this state.
cold
The Texas Instruments PCI1410A device addresses these D3 wake-up issues in the following manner:
•Two resets are provided to handle preservation of PME
context bits:
–Global reset (GRST) is used only on the initial boot up of the system after power up. It places the
PCI1410A device in its default state and requires BIOS to configure the device before becoming fully
functional.
–PCI reset (PRST
enabled, PME
Please see the master list of PME
•Power source in D3
auxiliary power source must be supplied to the PCI1410A V
) now has dual functionality based on whether PME is enabled or not. If PME is
context is preserved. If PME is not enabled, PRST acts the same as a normal PCI reset.
context bits in Section 3.8.10.
if wake-up support is required from this state. Since VCC is removed in D3
cold
terminals. Consult the PCI14xx
CC
cold
, an
Implementation Guide for D3 Wake-Up or the PCI Power Management Interface Specification for PCI to
CardBus Bridges for further information.
3.8.9ACPI Support
The Advanced Configuration and Power Interface (ACPI) Specification provides a mechanism that allows unique
pieces of hardware to be described to the ACPI driver. The PCI1410A device offers a generic interface that is
compliant with ACPI design rules.
Two doublewords of general-purpose ACPI programming bits reside in PCI1410A PCI configuration space at offset
A8h. The programming model is broken into status and control functions. In compliance with ACPI, the top-level event
status and enable bits reside in the general-purpose event status (PCI offset A8h, see Section 4.43) and
general-purpose event enable (PCI offset AAh, see Section 4.44) registers. The status and enable bits are
implemented as defined by ACPI and illustrated in Figure 3–20.
3–23
Status Bit
Event Input
Enable Bit
Event Output
Figure 3–20. Block Diagram of a Status/Enable Cell
The status and enable bits generate an event that allows the ACPI driver to call a control method associated with the
pending status bit. The control method can then control the hardware by manipulating the hardware control bits or
by investigating child status bits and calling their respective control methods. A hierarchical implementation would
be somewhat limiting, however, as upstream devices would have to remain in some level of power state to report
events.
For more information on ACPI, see the Advanced Configuration and Power Interface (ACPI) Specification.
3.8.10 Master List of PME Context Bits and Global Reset-Only Bits
If the PME enable bit (bit 8) of the power management control/status register (PCI offset A4h, see Section 4.40) is
asserted, the assertion of PRST
the PME
context bits are cleared with PRST. The PME context bits are:
•Bridge control register (PCI offset 3Eh, see Section 4.25): bit 6
•Power management capabilities register (PCI offset A2h, see Section 4.39): bit 15
•CardBus socket present state register (CardBus offset 08h, see Section 6.3): bits 13–10, 7, 5–0
•CardBus socket control register (CardBus offset 10h, see Section 6.5): bits 6–4, 2–0
will not clear the following PME context bits. If the PME enable bit is not asserted,
Global reset places all registers in their default state, regardless of the state of the PME
is gated only by the SUSPEND
thus preserving all register contents. The registers cleared by GRST
signal. This means that assertion of SUSPEND blocks the GRST signal internally,
are:
enable bit. The GRST signal
•Subsystem vendor ID (PCI offset 40h, see Section 4.26): bits 15–0
•Subsystem ID (PCI offset 42h, see Section 4.27): bits 15–0
•PC Card 16-bit legacy-mode base address register (PCI offset 44h, see Section 4.28): bits 31–1
•System control register (PCI offset 80h, see Section 4.29): bits 31, 30, 27, 26, 24–14, 7–0
•General-purpose output (PCI offset AEh, see Section 4.46): bits 4–0
•Serial bus data (PCI offset B0h, see Section 4.47): bits 7–0
•Serial bus index (PCI offset B1h, see Section 4.48): bits 7–0
•Serial bus slave address register (PCI offset B2h, see Section 4.49): bits 7–0
•Serial bus control and status register (PCI offset B3h, see Section 4.50): bits 7, 2
•ExCA identification and revision register (ExCA offset 00h, see Section 5.1): bits 7–0
•ExCA card status change register (ExCA offset 804h, see Section 5.5): bits 3–0
•ExCA global control register (ExCA offset 1Eh, see Section 5.20): bits 3–0
3–24
4 PC Card Controller Programming Model
This section describes the PCI1410A PCI configuration registers that make up the 256-byte PCI configuration header
for each PCI1410A function. As noted, some bits are global in nature and are accessed only through function 0.
4.1PCI Configuration Registers
The configuration header is compliant with the PCI Local Bus Specification as a CardBus bridge header and is PC 99
compliant as well. Table 4–1 shows the PCI configuration header, which includes both the predefined portion of the
configuration space and the user-definable registers.
Table 4–1. PCI Configuration Registers
REGISTER NAMEOFFSET
Device IDVendor ID00h
StatusCommand04h
PCI class codeRevision ID08h
BISTHeader typeLatency timerCache line size0Ch
CardBus socket/ExCA base-address10h
Secondary statusReservedCapability pointer14h
CardBus latency timerSubordinate bus numberCardBus bus numberPCI bus number18h
Serial bus slave addressSerial bus indexSerial bus dataB0h
ReservedB4h–FCh
Power management control/statusA4h
4–1
A bit description table, typically included when a register contains bits of more than one type or purpose, indicates
bit field names, a detailed field description, and field access tags, which appear in the type column of the
bit-description table. Table 4–2 describes the field access tags.
Table 4–2. Bit-Field Access Tag Descriptions
ACCESS TAGNAMEMEANING
RReadField can be read by software.
WWriteField can be written by software to any value.
SSetField can be set by a write of 1. Writes of 0 have no effect.
CClearField can be cleared by a write of 1. Writes of 0 have no effect.
UUpdateField can be autonomously updated by the PCI1410A device.
†
A bit can display either of two types of behavior when read. After having been read, it can maintain the value it had previously, or the read
process can cause it to be reset to 0.
†
4.2Vendor ID Register
The vendor ID register contains a value allocated by the PCI Special Interest Group (SIG) and identifies the
manufacturer of the PCI device. The vendor ID assigned to TI is 104Ch.
Bit1514131211109876543210
NameVendor ID
TypeRRRRRRRRRRRRRRRR
Default0001000001001100
Register:Vendor ID
Offset:00h
Type:Read-only
Default:104Ch
4.3Device ID Register
The device ID register contains a value assigned to the PCI1410A device by TI. The device identification for the
PCI1410A device is AC50h.
Bit1514131211109876543210
NameDevice ID
TypeRRRRRRRRRRRRRRRR
Default1010110001010000
Register:Device ID
Offset:02h
Type:Read-only
Default:AC50h
4–2
4.4Command Register
The command register provides control over the PCI1410A interface to the PCI bus. All bit functions adhere to the
definitions in PCI Local Bus Specification. See Table 4–3 for the complete description of the register contents.
15–10RSVDRReserved. Bits 15–10 return 0s when read.
9FBB_ENR
8SERR_ENR/W
7STEP_ENR
6PERR_ENR/W
5VGA_ENR/W
4MWI_ENR
3SPECIALR
2MAST_ENR/W
1MEM_ENR/W
0IO_ENR/W
Fast back-to-back enable. The PCI1410A device does not generate fast back-to-back transactions;
therefore, bit 9 returns 0 when read.
System error (SERR) enable. Bit 8 controls the enable for the SERR driver on the PCI interface. SERR can
be asserted after detecting an address parity error on the PCI bus. Both bits 8 and 6 must be set for the
PCI1410A device to report address parity errors.
0 = Disables the SERR
1 = Enables the SERR
Address/data stepping control. The PCI1410A device does not support address/data stepping; therefore,
bit 7 is hardwired to 0.
Parity-error response enable. Bit 6 controls the PCI1410A device response to parity errors through PERR.
Data parity errors are indicated by asserting PERR
VGA palette snoop. When bit 5 is set to 1, palette snooping is enabled (that is, the PCI1410A device does
not respond to palette register writes and snoops the data). When bit 5 is 0, the PCI1410A device treats all
palette accesses like all other accesses.
Memory write and invalidate enable. Bit 4 controls whether a PCI initiator device can generate memory write
and invalidate commands. The PCI1410A controller does not support memory write and invalidate
commands. It uses memory write commands instead; therefore, this bit is hardwired to 0.
Special cycles. Bit 3 controls whether or not a PCI device ignores PCI special cycles. The PCI1410A device
does not respond to special cycle operations; therefore, this bit is hardwired to 0.
Bus-master control. Bit 2 controls whether or not the PCI1410A device can act as a PCI bus initiator
(master). The PCI1410A device can take control of the PCI bus only when this bit is set.
0 = Disables the PCI1410A device’s ability to generate PCI bus accesses (default).
1 = Enables the PCI1410A device’s ability to generate PCI bus accesses.
Memory space enable. Bit 1 controls whether or not the PCI1410A device can claim cycles in PCI memory
space.
0 = Disables the PCI1410A device response to memory space accesses (default).
1 = Enables the PCI1410A device response to memory space accesses.
I/O space control. Bit 0 controls whether or not the PCI1410A device can claim cycles in PCI I/O space.
0 = Disables the PCI1410A device response to I/O space accesses (default).
1 = Enables the PCI1410A device response to I/O space accesses.
output driver (default).
output driver.
; address parity errors are indicated by asserting SERR.
4–3
4.5Status Register
The status register provides device information to the host system. Bits in this register can be read normally. A bit
in the status register is reset when a 1 is written to that bit location; a 0 written to a bit location has no effect. All bit
functions adhere to the definitions in the PCI Local Bus Specification. PCI bus status is shown through each function.
See Table 4–4 for a complete description of the register contents.
Detected parity error. Bit 15 is set when a parity error is detected (either address or data). W rite a 1 to clear
this bit.
Signaled system error. Bit 14 is set when SERR is enabled and the PCI1410A device signals a system error
to the host. Write a 1 to clear this bit.
Received master abort. Bit 13 is set when a cycle initiated by the PCI1410A device on the PCI bus is
terminated by a master abort. Write a 1 to clear this bit.
Received target abort. Bit 12 is set when a cycle initiated by the PCI1410A device on the PCI bus is
terminated by a target abort. Write a 1 to clear this bit.
Signaled target abort. Bit 11 is set by the PCI1410A device when it terminates a transaction on the PCI bus
with a target abort. Write a 1 to clear this bit.
DEVSEL timing. These bits encode the timing of DEVSEL and are hardwired 01b, indicating that the
PCI1410A device asserts PCI_SPEED at a medium speed on nonconfiguration cycle accesses.
Data parity error detected. Write a 1 to clear this bit.
0 = The conditions for setting bit 8 have not been met.
1 = A data parity error occurred, and the following conditions were met:
a. PERR
b. The PCI1410A device was the bus master during the data parity error.
c. Bit 6 (PERR_EN) in the command register (PCI offset 04h, see Section 4.4) is set.
Fast back-to-back capable. The PCI1410A device cannot accept fast back-to-back transactions; therefore,
bit 7 is hardwired to 0.
User-definable feature support. The PCI1410A device does not support the user-definable features;
therefore, bit 6 is hardwired to 0.
66-MHz capable. The PCI1410A device operates at a maximum PCLK frequency of 33 MHz; therefore, bit 5
is hardwired to 0.
Capabilities list. Bit 4 returns 1 when read. This bit indicates that capabilities, in addition to standard PCI
capabilities, are implemented. The linked list of PCI power management capabilities is implemented in this
function.
was asserted by any PCI device, including the PCI1410A device.
4–4
4.6Revision ID Register
The revision ID register indicates the silicon revision of the PCI1410A device.
Bit76543210
NameRevision ID
TypeRRRRRRRR
Default00000010
Register:Revision ID
Offset:08h
Type:Read-only
Default:02h
4.7PCI Class Code Register
The class code register recognizes the PCI1410A device as a bridge device (06h) and CardBus bridge device (07h)
with a 00h programming interface.
Bit2322 21 2019 18 1716 1514 131211109876543210
NamePCI class code
Register:PCI class code
Offset:09h
Type:Read-only
Default:06 0700h
4.8Cache Line Size Register
The cache line size register is programmed by host software to indicate the system cache line size.
Bit76543210
NameCache line size
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:Cache line size
Offset:0Ch
Type:Read/Write
Default:00h
4–5
4.9Latency Timer Register
The latency timer register specifies the latency timer for the PCI1410A device in units of PCI clock cycles. When the
PCI1410A device is a PCI bus initiator and asserts FRAME
, the latency timer begins counting from zero. If the latency
timer expires before the PCI1410A transaction has terminated, the PCI1410A device terminates the transaction when
its GNT
This register returns 02h when read, indicating that the PCI1410A configuration spaces adhere to the CardBus bridge
PCI header. The CardBus bridge PCI header ranges from PCI register 0 to 7Fh, and 80h–FFh are user-definable
extension registers.
Bit76543210
NameHeader type
TypeRRRRRRRR
Default00000010
Register:Header type
Offset:0Eh
Type:Read-only
Default:02h
4.11 BIST Register
Because the PCI1410A device does not support a built-in self-test (BIST), this register returns the value of 00h when
read.
The CardBus socket/ExCA base-address register is programmed with a base address referencing the CardBus
socket registers and the memory-mapped ExCA register set. Bits 31–12 are read/write and allow the base address
to be located anywhere in the 32-bit PCI memory address space on a 4-Kbyte boundary. Bits 11–0 are read-only,
returning 0s when read. When software writes all 1s to this register, the value read back is FFFF F000h, indicating
that at least 4 Kbytes of memory address space are required. The CardBus registers start at offset 000h, and the
memory-mapped ExCA registers begin at offset 800h.
The capability pointer register provides a pointer into the PCI configuration header where the PCI
power-management register block resides. PCI header doublewords at A0h and A4h provide the power-management
(PM) registers. The socket has its own capability pointer register. This register returns A0h when read.
The secondary status register is compatible with the PCI-to-PCI bridge secondary status register and indicates
CardBus-related device information to the host system. This register is very similar to the status register (PCI offset
06h); status bits are cleared by writing a 1. See Table 4–5 for a complete description of the register contents.
Bit1514131211109876543210
NameSecondary status
TypeR/CR/CR/CR/CR/CRRR/CRRRRRRRR
Default0000001000000000
Register:Secondary status
Offset:16h
Type:Read-only, Read/Clear
Default:0200h
Table 4–5. Secondary Status Register Description
BITSIGNALTYPEFUNCTION
15CBPARITYR/C
14CBSERRR/C
13CBMABORTR/C
12REC_CBTAR/C
11SIG_CBTAR/C
10–9CB_SPEEDR
8CB_DPARR/C
7CBFBB_CAPR
6CB_UDFR
5CB66MHZR
4–0RSVDRReserved. Bits 4–0 return 0s when read.
Detected parity error. Bit 15 is set when a CardBus parity error is detected (either address or data). Write
a 1 to clear this bit.
Signaled system error. Bit 14 is set when CSERR is signaled by a CardBus card. The PCI1410A device
does not assert CSERR
Received master abort. Bit 13 is set when a cycle initiated by the PCI1410A device on the CardBus bus
is terminated by a master abort. Write a 1 to clear this bit.
Received target abort. Bit 12 is set when a cycle initiated by the PCI1410A device on the CardBus bus
is terminated by a target abort. Write a 1 to clear this bit.
Signaled target abort. Bit 11 is set by the PCI1410A device when it terminates a transaction on the CardBus
bus with a target abort. Write a 1 to clear this bit.
CDEVSEL timing. These bits encode the timing of CDEVSEL and are hardwired 01b, indicating that the
PCI1410A device asserts CB_SPEED at a medium speed.
CardBus data parity error detected. Write a 1 to clear this bit.
0 = The conditions for setting bit 8 have not been met.
1 = A data parity error occurred and the following conditions were met:
a. CPERR
b. The PCI1410A device was the bus master during the data parity error.
c. Bit 0 (CPERREN) in the bridge control register (PCI offset 3Eh, see Section 4.25) is set.
Fast back-to-back capable. The PCI1410A device cannot accept fast back-to-back transactions;
therefore, bit 7 is hardwired to 0.
User-definable feature support. The PCI1410A device does not support the user-definable features;
therefore, bit 6 is hardwired to 0.
66-MHz capable. The PCI1410A CardBus interface operates at a maximum CCLK frequency of 33 MHz;
therefore, bit 5 is hardwired to 0.
. Write a 1 to clear this bit.
was asserted on the CardBus interface.
4–8
4.15 PCI Bus Number Register
The PCI bus number register is programmed by the host system to indicate the bus number of the PCI bus to which
the PCI1410A device is connected. The PCI1410A device uses this register in conjunction with the CardBus bus
number (PCI offset 19h, see Section 4.16) and subordinate bus number (PCI offset 1Ah, see Section 4.17) registers
to determine when to forward PCI configuration cycles to its secondary buses.
Bit76543210
NamePCI bus number
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:PCI bus number
Offset:18h
Type:Read/Write
Default:00h
4.16 CardBus Bus Number Register
The CardBus bus number register is programmed by the host system to indicate the bus number of the CardBus bus
to which the PCI1410A device is connected. The PCI1410A device uses this register in conjunction with the PCI bus
number (PCI offset 18h, see Section 4.15) and subordinate bus number (PCI offset 1Ah, see Section 4.17) registers
to determine when to forward PCI configuration cycles to its secondary buses.
Bit76543210
NameCardBus bus number
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:CardBus bus number
Offset:19h
Type:Read/Write
Default:00h
4.17 Subordinate Bus Number Register
The subordinate bus number register is programmed by the host system to indicate the highest-numbered bus below
the CardBus bus. The PCI1410A device uses this register in conjunction with the PCI bus number (PCI offset 18h,
see Section 4.15) and CardBus bus number (PCI offset 19h, see Section 4.16) registers to determine when to forward
PCI configuration cycles to its secondary buses.
Bit76543210
NameSubordinate bus number
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:Subordinate bus number
Offset:1Ah
Type:Read/Write
Default:00h
4–9
4.18 CardBus Latency Timer Register
This register is programmed by the host system to specify the latency timer for the PCI1410A CardBus interface in
units of CCLK cycles. When the PCI1410A device is a CardBus initiator and asserts CFRAME
, the CardBus latency
timer begins counting. If the latency timer expires before the PCI1410A transaction has terminated, the PCI1410A
device terminates the transaction at the end of the next data phase. A recommended minimum value for this register
is 20h, which allows most transactions to be completed.
The memory base registers indicate the lower address of a PCI memory address range. These registers are used
by the PCI1410A device to determine when to forward a memory transaction to the CardBus bus and when to forward
a CardBus cycle to the PCI bus. Bits 31–12 of these registers are read/write and allow the memory base to be located
anywhere in the 32-bit PCI memory space on 4-Kbyte boundaries. Bits 11–0 are read-only and always return 0s. Write
transactions to these bits have no effect. Bits 8 (PREFETCH0) and 9 (PREFETCH1) of the bridge control register
(PCI offset 3Eh, see Section 4.25) specify whether memory windows 0 and 1 are prefetchable or nonprefetchable.
The memory base register or the memory limit register must be nonzero for the PCI1410A device to claim any memory
transactions through the CardBus memory windows (that is, these windows are not enabled by default to pass the
first 4 Kbytes of memory to CardBus).
Bit31302928272625242322212019181716
NameMemory base registers 0, 1
TypeR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/W
Default0000000000000000
Bit1514131211109876543210
NameMemory base registers 0, 1
TypeR/WR/WR/WR/WRRRRRRRRRRRR
Default0000000000000000
Register:Memory base register 0
Offset:1Ch
Register:Memory base register 1
Offset:24h
Type:Read-only, Read/Write
Default:0000 0000h
4–10
4.20 Memory Limit Registers 0, 1
The memory limit registers indicate the upper address of a PCI memory address range. These registers are used
by the PCI1410A device to determine when to forward a memory transaction to the CardBus bus and when to forward
a CardBus cycle to the PCI bus. Bits 31–12 of these registers are read/write and allow the memory base to be located
anywhere in the 32-bit PCI memory space on 4-Kbyte boundaries. Bits 11–0 are read-only and always return 0s. Write
transactions to these bits have no effect. Bits 8 (PREFETCH0) and 9 (PREFETCH1) of the bridge control register
(PCI offset 3Eh, see Section 4.25) specify whether memory windows 0 and 1 are prefetchable or nonprefetchable.
The memory base register or the memory limit register must be nonzero for the PCI1410A device to claim any memory
transactions through the CardBus memory windows (that is, these windows are not enabled by default to pass the
first 4 Kbytes of memory to CardBus).
The I/O base registers indicate the lower address of a PCI I/O address range. These registers are used by the
PCI1410A device to determine when to forward an I/O transaction to the CardBus bus and when to forward a CardBus
cycle to the P C I bus. The lower 16 bits of these registers locate the bottom of the I/O window within a 64-Kbyte page,
and the upper 16 bits (31–16) are a page register that locates this 64-Kbyte page in 32-bit PCI I/O address space.
Bits 31–2 are read/write. Bits 1 and 0 are read-only and always return 0s, forcing the I/O window to be aligned on
a natural doubleword boundary.
NOTE: Either the I/O base or the I/O limit register must be nonzero to enable any I/O
transactions.
Bit31302928272625242322212019181716
NameI/O base registers 0, 1
TypeR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/W
Default0000000000000000
Bit1514131211109876543210
NameI/O base registers 0, 1
TypeR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WRR
Default0000000000000000
The I/O limit registers indicate the upper address of a PCI I/O address range. These registers are used by the
PCI1410A device to determine when to forward an I/O transaction to the CardBus bus and when to forward a CardBus
cycle to the PCI bus. The lower 16 bits of these registers locate the top of the I/O window within a 64-Kbyte page,
and the upper 16 bits are a page register that locates this 64-Kbyte page in 32-bit PCI I/O address space. Bits 15–2
are read/write and allow the I/O limit address to be located anywhere in the 64-Kbyte page (indicated by bits 31–16
of the appropriate I/O base register) on doubleword boundaries.
Bits 31–16 are read-only and always return 0s when read. The page is set in the I/O base register. Bits 1 and 0 are
read-only and always return 0s, forcing I/O windows to be aligned on a natural doubleword boundary. Write
transactions to read-only bits have no effect. The PCI1410A device assumes that the lower 2 bits of the limit address
are 1s.
NOTE: The I/O base or the I/O limit register must be nonzero to enable an I/O transaction.
The interrupt line register communicates interrupt line routing information.
Bit76543210
NameInterrupt line
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default11111111
Register:Interrupt line
Offset:3Ch
Type:Read/Write
Default:FFh
4–12
4.24 Interrupt Pin Register
The value read from the interrupt pin register is function dependent and depends on the interrupt signaling mode,
selected through bits 2–1 (INTMODE field) of the device control register (PCI offset 92h, see Section 4.33). The
PCI1410A device defaults to serialized PCI and ISA interrupt mode.
The bridge control register provides control over various PCI1410A bridging functions. See Table 4–6 for a complete
description of the register contents.
Bit1514131211109876543210
NameBridge control
TypeRRRRRR/WR/WR/WR/WR/WR/WRR/WR/WR/WR/W
Default0000001101000000
Register:Bridge control
Offset:3Eh
Type:Read-only, Read/Write
Default:0340h
Table 4–6. Bridge Control Register Description
BITSIGNALTYPEFUNCTION
15–11RSVDRReserved. Bits 15–11 return 0s when read.
Write posting enable. Enables write posting to and from the CardBus sockets. Write posting enables
10POSTENR/W
9PREFETCH1R/W
8PREFETCH0R/W
7INTRR/W
6CRSTR/W
5MABTMODER/W
4RSVDRReserved. Bit 4 returns 0 when read.
3VGAENR/W
2ISAENR/W
1CSERRENR/W
0CPERRENR/W
posting of write data on burst cycles. Operating with write posting disabled inhibits performance on burst
cycles. Note that burst write data can be posted, but various write transactions cannot.
Memory window 1 type. Bit 9 specifies whether or not memory window 1 is prefetchable. This bit is socket
dependent. Bit 9 is encoded as:
0 = Memory window 1 is nonprefetchable.
1 = Memory window 1 is prefetchable (default).
Memory window 0 type. Bit 8 specifies whether or not memory window 0 is prefetchable. This bit is
encoded as:
0 = Memory window 0 is nonprefetchable.
1 = Memory window 0 is prefetchable (default).
PCI interrupt – IREQ routing enable. Bit 7 selects whether PC Card functional interrupts are routed to PCI
interrupts or to the IRQ specified in the ExCA registers.
0 = Functional interrupts are routed to PCI interrupts (default).
1 = Functional interrupts are routed by ExCAs.
CardBus reset. When bit 6 is set, CRST is asserted on the CardBus interface. CRST also can be asserted
by passing a PRST
0 = CRST
1 = CRST
Master abort mode. Bit 5 controls how the PCI1410A device responds to a master abort when the
PCI1410A device is an initiator on the CardBus interface.
0 = Master aborts are not reported (default).
1 = Signal target abort on PCI and SERR
VGA enable. Bit 3 affects how the PCI1410A device responds to VGA addresses. When this bit is set,
accesses to VGA addresses are forwarded.
ISA mode enable. Bit 2 affects how the PCI1410A device passes I/O cycles within the 64-Kbyte ISA range.
This bit is not common between sockets. When this bit is set, the PCI1410A device does not forward the
last 768 bytes of each 1K I/O range to CardBus.
CSERR enable. Bit 1 controls the response of the PCI1410A device to CSERR signals on the CardBus
bus. This bit is common between the two sockets.
0 = CSERR is not forwarded to PCI SERR.
1 = CSERR
CardBus parity error response enable. Bit 0 controls the response of the PCI1410A device to CardBus
parity errors. This bit is common between the two sockets.
0 = CardBus parity errors are ignored.
1 = CardBus parity errors are reported using CPERR
assertion to CardBus.
is deasserted.
is asserted (default).
(if enabled)
is forwarded to PCI SERR.
.
4–14
4.26 Subsystem Vendor ID Register
The subsystem vendor ID register is used for system and option-card identification purposes and may be required
for certain operating systems. This register is read-only or read/write, depending on the setting of bit 5 (SUBSYSRW)
in the system control register (PCI offset 80h, see Section 4.29).
Bit1514131211109876543210
NameSubsystem vendor ID
TypeRRRRRRRRRRRRRRRR
Default0000000000000000
Register:Subsystem vendor ID
Offset:40h
Type:Read-only (Read/Write if enabled by SUBSYSRW)
Default:0000h
4.27 Subsystem ID Register
The subsystem ID register is used for system and option-card identification purposes and may be required for certain
operating systems. This register is read-only or read/write, depending on the setting of bit 5 (SUBSYSRW) in the
system control register (PCI offset 80h, see Section 4.29).
Bit1514131211109876543210
NameSubsystem ID
TypeRRRRRRRRRRRRRRRR
Default0000000000000000
Register:Subsystem ID
Offset:42h
Type:Read-only (Read/Write if enabled by SUBSYSRW)
Default:0000h
4.28 PC Card 16-Bit I/F Legacy-Mode Base-Address Register
The PCI1410A device supports the index/data scheme of accessing the ExCA registers, which is mapped by this
register. An address written to this register is the address for the index register and the address + 1 is the data address.
Using this access method, applications requiring index/data ExCA access can be supported. The base address can
be mapped anywhere in 32-bit I/O space on a word boundary; hence, bit 0 is read-only, returning 1 when read. See
Section 5, ExCA Compatibility Registers, for register offsets.
Bit31302928272625242322212019181716
NamePC Card 16-bit I/F legacy-mode base address
TypeR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/W
Default0000000000000000
Bit1514131211109876543210
NamePC Card 16-bit I/F legacy-mode base address
TypeR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR
Default0000000000000001
System-level initializations are performed through programming this doubleword register. See Table 4–7 for a
complete description of the register contents.
Bit31302928272625242322212019181716
NameSystem control
TypeR/WR/WRRR/WR/WR/CR/WRR/WR/WR/WR/WR/WR/WR/W
Default0000000001000100
Bit1514131211109876543210
NameSystem control
TypeR/WR/WRRRRRRR/WR/WR/WR/WR/WR/WR/WR/W
Default1001000001100000
Register:System control
Type:Read-only, Read/Write, Read/Clear
Offset:80h
Default:0044 9060h
4–16
Table 4–7. System Control Register Description
BITSIGNALTYPEFUNCTION
Serialized PCI interrupt routing step. Bits 31 and 30 configure the serialized PCI interrupt stream
signaling and accomplish an even distribution of interrupts signaled on the four PCI interrupt slots.
Bits 31 and 30 are encoded as follows:
31–30SER_STEPR/W
29–28RSVDRReserved. Bits 29 and 28 return 0s when read.
27OSENR/W
26SMIROUTER/W
25SMISTATUSR/C
24SMIENBR/W
23RSVDRReserved. Bit 23 returns 0 when read.
22CBRSVDR/W
21VCCPROTR/W
20REDUCEZVR/W
19CDREQENR/W
18–16CDMACHANR/W
15MRBURSTDNR/W
14MRBURSTUPR/W
00 = INTA
01 = INTA
10 = INTA
11 = INTA
Internal oscillator enable.
0 = Internal oscillator is disabled (default).
1 = Internal oscillator is enabled.
SMI interrupt routing. Bit 26 selects whether IRQ2 or CSC is signaled when a write occurs to power
a PC Card socket.
0 = PC Card power change interrupts are routed to IRQ2 (default).
1 = A CSC interrupt is generated on PC Card power changes.
SMI interrupt status. This bit is set when bit 24 (SMIENB) is set and a write occurs to set the socket
power. Writing a 1 to bit 25 clears the status.
0 = SMI interrupt is signaled (default).
1 = SMI interrupt is not signaled.
SMI interrupt mode enable. When bit 24 is set and a write to the socket power control occurs, the SMI
interrupt signaling is enabled and generates an interrupt. This bit is shared and defaults to 0 (disabled).
CardBus reserved-terminals signaling. When a CardBus card is inserted and bit 22 is set, the RSVD
CardBus terminals are driven low. When this bit is 0, these signals are placed in a high-impedance
state.
0 = Place CardBus RSVD in a high-impedance state
1 = Drive Cardbus RSVD low (default)
VCC protection enable.
0 = VCC protection is enabled for 16-bit cards (default).
1 = VCC protection is disabled for 16-bit cards.
Reduced zoomed-video enable. When this bit is enabled, pins ADDR25–ADDR22 of the card interface
for PC Card-16 cards are placed in the high-impedance state. This bit should not be set for normal ZV
operation. This bit is encoded as:
0 = Reduced ZV is disabled (default).
1 = Reduced ZV is enabled.
PC/PCI DMA card enable. When bit 19 is set, the PCI1410A device allows 16-bit PC Cards to request
PC/PCI DMA using the DREQ
94h, see Section 4.35).
0 = Ignore DREQ signaling from PC Cards (default)
1 = Signal DMA request on DREQ
PC/PCI DMA channel assignment. Bits 18–16 are encoded as:
0–3 = 8-bit DMA channels
4 = Not used (default)
5–7 = 16-bit DMA channels
Memory-read burst-enable downstream. When bit 15 is set, memory-read transactions are allowed to
burst downstream.
0 = Downstream memory-read burst is disabled.
1 = Downstream memory-read burst is enabled (default).
Memory-read burst-enable upstream. When bit 14 is set, the PCI1410A device allows memory-read
transactions to burst upstream.
0 = Upstream memory-read burst is disabled (default).
1 = Upstream memory-read burst is enabled.
signaled in INTA IRQSER slots
signaled in INTB IRQSER slots
signaled in INTC IRQSER slots
signaled in INTD IRQSER slots
signaling. DREQ is selected through the socket DMA register (PCI offset
4–17
Table 4–7. System Control Register Description (Continued)
BITSIGNALTYPEFUNCTION
Socket activity status. When set, bit 13 indicates access has been performed to or from a PC card and
13SOCACTIVER
12RSVDRReserved. Bit 12 returns 1 when read.
11PWRSTREAMR
10DELAYUPR
9DELAYDOWNR
8INTERROGATER
7AUTOPWRSWENR/W
6PWRSAVINGSR/W
5SUBSYSRWR/W
4CB_DPARR/W
3CDMA_ENR/W
2ExCAPowerR/W
1KEEPCLKR/W
0RIMUXR/W
is cleared upon read of this status bit.
0 = No socket activity (default)
1 = Socket activity
Power stream in progress status bit. When set, bit 1 1 indicates that a power stream to the power switch
is in progress and a powering change has been requested. This bit is cleared when the power stream
is complete.
0 = Power stream is complete and delay has expired.
1 = Power stream is in progress.
Power-up delay in progress status. When set, bit 9 indicates that a power-up stream has been sent to
the power switch and proper power may not yet be stable. This bit is cleared when the power-up delay
has expired.
Power-down delay in progress status. When set, bit 10 indicates that a power-down stream has been
sent to the power switch and proper power may not yet be stable. This bit is cleared when the
power-down delay has expired.
Interrogation in progress. When set, bit 8 indicates an interrogation is in progress and clears when
interrogation completes. This bit is socket dependent.
0 = Interrogation is not in progress (default).
1 = Interrogation is in progress.
Auto power-switch enable.
0 = Bit 5 (AUTOPWRSWEN) in ExCA power control register (ExCA offset 02h, see Section 5.3)
is disabled (default).
1 = Bit 5 (AUTOPWRSWEN) in ExCA power control register (ExCA offset 02h, see Section 5.3)
is enabled.
Power savings mode enable. When this bit is set, if a CB card is inserted, idle, and without a CB clock,
the applicable CB state machine is not clocked.
Subsystem ID (PCI offset 42h, see Section 4.27), subsystem vendor ID (PCI offset 40h, see
Section 4.26), ExCA identification and revision (ExCA offset 00h, see Section 5.1) registers read/write
enable.
0 = Subsystem ID, subsystem vendor ID, ExCA identification and revision registers are read/write.
1 = Subsystem ID, subsystem vendor ID, ExCA identification and revision registers are read-only
(default).
CardBus data parity SERR signaling enable.
0 = CardBus data parity is not signaled on PCI SERR
1 = CardBus data parity is signaled on PCI SERR
PC/PCI DMA enable. Bit 3 enables PC/PCI DMA when set if MFUNC0–MFUNC6 are configured for
centralized DMA.
0 = Centralized DMA is disabled (default).
1 = Centralized DMA is enabled.
ExCA power control bit. Enabled by selecting the 82365SL mode.
0 = Enables 3.3 V.
1 = Enables 5 V.
Keep clock. This bit works with PCI and CB CLKRUN protocols.
0 = Allows normal functioning of both CLKRUN
1 = Does not allow CB clock or PCI clock to be stopped using the CLKRUN
RI_OUT/PME multiplex enable.
0 = RI_OUT
same time, RI_OUT
1 = Only PME
and PME are both routed to the RI_OUT/PME terminal. If both are enabled at the
has precedence over PME.
is routed to the RI_OUT/PME terminal.
.
protocols (default).
.
protocols.
4–18
4.30 Multifunction Routing Register
The multifunction routing register is used to configure the MFUNC0–MFUNC6 terminals. These terminals can be
configured for various functions. All multifunction terminals default to the general-purpose input configuration. This
register is intended to be programmed once at power-on initialization. The default value for this register also can be
loaded through a serial bus EEPROM. See Table 4–8 for a complete description of the register contents.
The retry status register enables the retry timeout counters and displays the retry expiration status. The flags are set
when the PCI1410A device retries a PCI or CardBus master request and the master does not return within 2
15
PCI
clock cycles. The flags are cleared by writing a 1 to the bit. These bits are expected to be incorporated into the PCI
command, PCI status, and bridge control registers by the PCI SIG. See Table 4–9 for a complete description of the
register contents.
Bit76543210
NameRetry status
TypeR/WR/WRRR/CRR/CR
Default11000000
Register:Retry status
Offset:90h
Type:Read-only, Read/Write, Read/Clear
Default:C0h
Table 4–9. Retry Status Register Description
BITSIGNALTYPEFUNCTION
PCI retry timeout counter enable. Bit 7 is encoded:
7PCIRETRYR/W
6CBRETRYR/W
5–4RSVDRReserved. Bits 5 and 4 return 0s when read.
3TEXP_CBR/C
2RSVDRReserved. Bit 2 returns 0 when read.
1TEXP_PCIR/C
0RSVDRReserved. Bit 0 returns 0 when read.
0 = PCI retry counter is disabled.
1 = PCI retry counter is enabled (default).
CardBus retry timeout counter enable. Bit 6 is encoded:
0 = CardBus retry counter is disabled.
1 = CardBus retry counter is enabled (default).
CardBus target retry expired. Write a 1 to clear bit 3.
0 = Inactive (default)
1 = Retry has expired.
PCI target retry expired. Write a 1 to clear bit 1.
0 = Inactive (default)
1 = Retry has expired.
4–20
4.32 Card Control Register
The card control register is provided for PCI1130 compatibility. RI_OUT is enabled through this register. See
Table 4–10 for a complete description of the register contents.
Bit76543210
NameCard control
TypeR/WR/WR/WRRR/WR/WR/C
Default00000000
Register:Card control
Offset:91h
Type:Read-only, Read/Write, Read/Clear
Default:00h
Table 4–10. Card Control Register Description
BITSIGNALTYPEFUNCTION
Ring indicate output enable.
0 = Disables any routing of RI_OUT
7RIENBR/W
6ZVENABLER/W
5No functionR/WThis bit has no assigned function.
4–3RSVDRReserved. Bits 4 and 3 return 0 when read.
2AUD2MUXR/W
1SPKROUTENR/W
0IFGR/C
1 = Enables RI_OUT
control register (PCI offset 80h, see Section 4.29) is set to 0, and for routing to MFUNC2 or
MFUNC4.
Compatibility ZV mode enable. When set, the PC Card socket interface ZV terminals enter a
high-impedance state. This bit defaults to 0.
CardBus audio-to-IRQMUX. When set, the CAUDIO CardBus signal is routed to the corresponding
multifunction terminal, which may be configured for CAUDPWM.
Speaker out enable. When bit 1 is set, SPKR on the PC Card is enabled and is routed to SPKROUT. The
SPKROUT terminal drives data only when the socket’s SPKROUTEN bit is set. This bit is encoded as:
0 = SPKR to SPKROUT is not enabled (default).
1 = SPKR
Interrupt flag. Bit 0 is the interrupt flag for 16-bit I/O PC Cards and for CardBus cards. Bit 0 is set when a
functional interrupt is signaled from a PC Card interface. Write back a 1 to clear this bit.
0 = No PC Card functional interrupt is detected (default).
1 = PC Card functional interrupt is detected.
to SPKROUT is enabled.
signal for routing to the RI_OUT/PME terminal, when bit 0 (RIMUX) in the system
signal (default).
4–21
4.33 Device Control Register
The device control register is provided for PCI1130 compatibility. The interrupt mode select and the socket-capable
force bits are programmed through this register. See Table 4–11 for a complete description of the register contents.
Bit76543210
NameDevice control
TypeR/WR/WR/WRR/WR/WR/WR/W
Default01100110
Register:Device control
Offset:92h
Type:Read-only, Read/Write
Default:66h
Table 4–11. Device Control Register Description
BITSIGNALTYPEFUNCTION
Socket-power lock bit. When this bit is set to 1, software cannot power down the PC Card socket while
7SKTPWR_LOCKR/W
63VCAPABLER/W
5IO16V2R/WDiagnostic bit. This bit defaults to 1.
4RSVDRReserved. Bit 4 returns 0 when read.
3TESTR/WTI test. Only a 0 should be written to bit 3.
2–1INTMODER/W
0RSVDR/WReserved. Bit 0 is reserved for test purposes. Only 0 should be written to this bit.
in D3. This may be necessary to support wake-up on LAN or RING if the operating system is
programmed to power down a socket when the CardBus controller is placed in the D3 state.
3-V socket-capable force
0 = Not 3-V capable
1 = 3-V capable (default)
Interrupt signaling mode. Bits 2 and 1 select the interrupt signaling mode. The interrupt signaling
mode bits are encoded:
00 = Parallel PCI interrupts only
01 = Parallel IRQ and parallel PCI interrupts
10 = IRQ serialized interrupts and parallel PCI interrupt
11 = IRQ and PCI serialized interrupts (default)
4–22
4.34 Diagnostic Register
The diagnostic register is provided for internal TI test purposes. It is a read/write register, but only 0s should be written
to it. See Table 4–12 for a complete description of the register contents.
4DIAG4R/WDiagnostic RETRY_DIS. Delayed transaction disable.
3DIAG3R/WDiagnostic RETRY_EXT . Extends the latency from 16 to 64.
2DIAG2R/WDiagnostic DISCARD_TIM_SEL_CB. Set = 210, reset = 215.
1DIAG1R/WDiagnostic DISCARD_TIM_SEL_PCI. Set = 210, reset = 215.
0ASYNCINTR/W
0 = Reads true values in PCI vendor ID and PCI device ID registers (default).
1 = Reads all 1s in the PCI vendor ID and PCI device ID registers.
CSC interrupt routing control
0 = CSC interrupts are routed to PCI if ExCA 803 (see Section 5.4) bit 4 = 1.
1 = CSC interrupts are routed to PCI if ExCA 805 (see Section 5.6) bits 7–4 = 0000b (default).
In this case, the setting of ExCA 803 bit 4 is a don’t care.
Asynchronous interrupt enable.
0 = CSC interrupt is not generated asynchronously.
1 = CSC interrupt is generated asynchronously (default).
4–23
4.35 Socket DMA Register 0
The socket DMA register 0 provides control over the PC Card DMA request (DREQ) signaling. See Table 4–13 for
a complete description of the register contents.
DMA request (DREQ). Bits 1 and 0 indicate which pin on the 16-bit PC Card interface acts as DREQ during
DMA transfers. This field is encoded as:
1–0DREQPINR/W
00 = Socket not configured for DMA (default).
01 = DREQ
10 = DREQ
11 = DREQ
uses SPKR.
uses IOIS16.
uses INPACK.
4–24
4.36 Socket DMA Register 1
The socket DMA register 1 provides control over the distributed DMA (DDMA) registers and the PCI portion of DMA
transfers. The DMA base address locates the DMA registers in a 16-byte region within the first 64 Kbytes of PCI I/O
address space. See Table 4–14 for a complete description of the register contents.
NOTE: 32-bit transfers are not supported; the maximum transfer possible for 16-bit PC Cards
is 16 bits.
31–16RSVDRReserved. Bits 31–16 return 0s when read.
DMA base address. Locates the socket’s DMA registers in PCI I/O space. This field represents a 16-bit PCI
15–4DMABASER/W
3EXTMODERExtended addressing. This feature is not supported by the PCI4410 and always returns a 0.
2–1XFERSIZER/W
0DDMAENR/W
I/O address. The upper 16 bits of the address are hardwired to 0, forcing this window to within the lower
64 Kbytes of I/O address space. The lower 4 bits are hardwired to 0 and are included in the address decode.
Thus, the window is aligned to a natural 16-byte boundary.
Transfer size. Bits 2 and 1 specify the width of the DMA transfer on the PC Card interface and are
encoded as:
00 = Transfers are 8 bits (default).
01 = Transfers are 16 bits.
10 = Reserved
11 = Reserved
DDMA registers decode enable. Enables the decoding of the distributed DMA registers based on the value
of bits 15–4 (DMABASE field).
0 = Disabled (default)
1 = Enabled
4–25
4.37 Capability ID Register
The capability ID register identifies the linked list item as the register for PCI power management. The register returns
01h when read, which is the unique ID assigned by the PCI SIG for the PCI location of the capabilities pointer and
the value.
Bit76543210
NameCapability ID
TypeRRRRRRRR
Default00000001
Register:Capability ID
Offset:A0h
Type:Read-only
Default:01h
4.38 Next-Item Pointer Register
The next-item pointer register indicates the next item in the linked list of the PCI power-management capabilities.
Because the PCI1410A functions include only one capabilities item, this register returns 0s when read.
This register contains information on the capabilities of the PC Card function related to power management. Both
PCI1410A CardBus bridge functions support D0, D1, D2, and D3 power states. See Table 4–15 for a complete
description of the register contents.
Table 4–15. Power Management Capabilities Register Description
BITSIGNALTYPEFUNCTION
PME support. This 5-bit field indicates the power states from which the PCI1410A functions can assert
PME
. A 0 (zero) for any bit indicates that the function cannot assert the PME signal while in that power state.
These five bits return 11111b when read. Each of these bits is described below:
15PME_SupportR/WBit 15 defaults to the value 1, indicating the PME signal can be asserted from the D3
14–11PME_SupportRBit 14 contains the value 1, indicating that the PME signal can be asserted from D3
10D2_SupportR
9D1_SupportR
8–6RSVDRReserved. Bits 8–6 return 0s when read.
5DSIR
4AUX_PWRR
3PMECLKR
2–0VERSIONR
R/W because wake-up support from D3
to the VCC terminals. If the system designer chooses not to provide an auxiliary power source to the V
terminals for D3
Bit 13 contains the value 1, indicating that the PME
Bit 12 contains the value 1, indicating that the PME
Bit 11 contains the value 1, indicating that the PME
D2 support. Bit 10 returns a 1 when read, indicating that the CardBus function supports the D2 device
power state.
D1 support. Bit 9 returns a 1 when read, indicating that the CardBus function supports the D1 device
power state.
Device-specific initialization. Bit 5 returns 1 when read, indicating that the CardBus controller function
requires special initialization (beyond the standard PCI configuration header) before the generic class
device driver is able to use it.
Auxiliary power source. Bit 4 is meaningful only if bit 15 (PME_Support, D3
it indicates that support for PME
proprietary delivery vehicle. When bit 4 is 0, it indicates that the function supplies its own auxiliary power
source.
PME clock. Bit 3 returns 0 when read, indicating that no host bus clock is required for the PCI1410A device
to generate PME
Version. Bits 2–0 return 001b when read, indicating that there are four bytes of general-purpose power
management (PM) registers as described in the PCI Bus Power Management Interface Specification.
wake-up support, the BIOS should write a 0 to this bit.
cold
in D3
.
is contingent on the system providing an auxiliary power source
cold
signal can be asserted from D2 state.
signal can be asserted from D1 state.
signal can be asserted from the D0 state.
) is set. When bit 4 is set,
requires auxiliary power supplied by the system by way of a
cold
cold
state. This bit is
cold
state.
hot
CC
4–27
4.40 Power Management Control/Status Register
The power management control/status register determines and changes the current power state of the PCI1410A
CardBus function. The contents of this register are not affected by the internally-generated reset caused by the
transition from D3
transition. TI-specific registers, PCI power management registers, and the legacy base address register are not reset.
See Table 4–16 for a complete description of the register contents.
Register:Power management control/status
Offset:A4h
Type:Read-only, Read/Write, Read/Write to Clear
Default:0000h
BITSIGNALTYPEFUNCTION
15PMESTATR/C
14–13DATASCALER
12–9DATASELR
8PME_ENR/W
7–5RSVDRReserved. Bits 7–5 return 0s when read.
4DYN_DATA_PME_ENR
3–2RSVDRReserved. Bits 3–2 return 0s when read.
1–0PWR_STATER/W
to D0 state. All PCI, ExCA, and CardBus registers are reset as a result of a D3
hot
Table 4–16. Power Management Control/Status Register Description
PME status. Bit 15 is set when the CardBus function normally would assert PME, independent
of the state of bit 8 (PME_EN). Bit 15 is cleared by a write back of 1, and this also clears PME
if PME was asserted by this function. Writing a 0 to this bit has no effect.
Data scale. This 2-bit field returns 0s when read. The CardBus function does not return any
dynamic data, as indicated by bit 4 (DYN_DATA_PME_EN).
Data select. This 4-bit field returns 0s when read. The CardBus function does not return any
dynamic data, as indicated by bit 4 (DYN_DATA_PME_EN).
PME enable. Bit 8 enables the function to assert PME. If this bit is cleared, the assertion of PME
is disabled.
Dynamic data PME enable. Bit 4 returns 0 when read, because the CardBus function does not
report dynamic data.
Power state. This 2-bit field is used both to determine the current power state of a function and
to set the function into a new power state. This field is encoded as:
00 = D0
01 = D1
10 = D2
11 = D3
hot
to D0 state
hot
4–28
4.41 Power Management Control/Status Bridge Support Extensions Register
The power management control/status register bridge support extensions support PCI bridge-specific functionality.
See Table 4–17 for a complete description of the register contents.
Bit76543210
NamePower management control/status bridge support extensions
TypeRRRRRRRR
Default11000000
Register:Power management control/status bridge support extensions
Offset:A6h
Type:Read-only
Default:C0h
Table 4–17. Power Management Control/Status Bridge Support Extensions Register Description
BITSIGNALTYPEFUNCTION
BPCC_Enable. Bus power/clock control enable. This bit returns 1 when read.
This bit is encoded as:
0 = Bus power/clock control is disabled.
1 = Bus power/clock control is enabled (default).
7BPCC_ENR
6B2_B3R
5–0RSVDRReserved. Bits 5–0 return 0s when read.
A 0 indicates that the bus power/clock control policies defined in the PCI Bus Power ManagementInterface Specification are disabled. When the bus power/clock control enable mechanism is disabled,
the bridge power management control/status register power state field (PCI offset A4h, see Section 4.40,
bits 1–0) cannot be used by the system software to control the power or the clock of the bridge secondary
bus. A 1 indicates that the bus power/clock control mechanism is enabled.
B2/B3 support for D3
programming the function to D3
as:
0 = When the bridge is programmed to D3
1 = When the bridge function is programmed to D3
stopped (B2). (Default)
. The state of this bit determines the action that is to occur as a direct result of
hot
. This bit is meaningful only if bit 7 (BPCC_EN) is a 1. This bit is encoded
hot
, its secondary bus will have its power removed (B3).
hot
, its secondary bus PCI clock will be
hot
4.42 Power Management Data Register
The power management data register returns 0s when read, because the CardBus functions do not report dynamic
data.
Bit76543210
NamePower management data
TypeRRRRRRRR
Default00000000
Register:Power management data
Offset:A7h
Type:Read-only
Default:00h
4–29
4.43 General-Purpose Event Status Register
The general-purpose event status register contains status bits that are set when events occur that are controlled by
the general-purpose control register. The bits in this register and the corresponding GPE
to the corresponding bit location. The status bits in this register do not depend upon the state of a corresponding bit
in the general-purpose enable register. See Table 4–18 for a complete description of the register contents.
Bit1514131211109876543210
NameGeneral-purpose event status
TypeR/CRRRR/CRRR/CRRRR/CR/CR/CR/CR/C
Default0000000000000000
Register:General-purpose event status
Offset:A8h
Type:Read-only, Read/Clear
Default:0000h
Table 4–18. General-Purpose Event Status Register Description
BITSIGNALTYPEFUNCTION
15ZV_STSR/C
14–12RSVDRReserved. Bits 14–12 return 0s when read.
11PWR_STSR/C
10–9RSVDRReserved. Bits 10 and 9 return 0s when read.
8VPP12_STSR/C
7–5RSVDRReserved. Bits 7–5 return 0s when read.
4GP4_STSR/CGPI4 status. Bit 4 is set on a change in status of the MFUNC5 terminal input level.
3GP3_STSR/CGPI3 status. Bit 3 is set on a change in status of the MFUNC4 terminal input level.
2GP2_STSR/CGPI2 status. Bit 2 is set on a change in status of the MFUNC2 terminal input level.
1GP1_STSR/CGPI1 status. Bit 1 is set on a change in status of the MFUNC1 terminal input level.
0GP0_STSR/CGPI0 status. Bit 0 is set on a change in status of the MFUNC0 terminal input level.
PC card ZV status. Bit 15 is set on a change in status of bit 6 (ZVENABLE) in the card control register (PCI
offset 91h, see Section 4.32).
Power change status. Bit 11 is set when software has changed the power state of the socket. A change
in either VCC or VPP for the socket causes this bit to be set.
12-V VPP request status. Bit 8 is set when software has changed the requested VPP level to or from 12 V
for the PC Card socket.
are cleared by writing a 1
4–30
4.44 General-Purpose Event Enable Register
The general-purpose event enable register contains bits that are set to enable a GPE signal. The GPE signal is driven
until the corresponding status bit is cleared and the event is serviced. The GPE
multifunction terminals, MFUNC6–MFUNC0, is configured for GPE
14–12RSVDRReserved. Bits 14–12 return 0s when read.
11PWR_ENR/W
10–9RSVDRReserved. Bits 10 and 9 return 0s when read.
8VPP12_ENR/W
7–5RSVDRReserved. Bits 7–5 return 0s when read.
4GP4_ENR/W
3GP3_ENR/W
2GP2_ENR/W
1GP1_ENR/W
0GP0_ENR/W
PC card socket ZV enable. When bit 15 is set, a GPE is signaled on a change in status of bit 6 (ZVENABLE)
in the card control register (PCI offset 91h, see Section 4.32).
Power change enable. When bit 11 is set, a GPE is signaled when software has changed the power state
of the socket.
12-V VPP request enable. When bit 8 is set, a GPE is signaled when software has changed the requested
VPP level to or from 12 V for the card socket.
GPI4 enable. When bit 4 is set, a GPE is signaled when there has been a change in status of the MFUNC5
terminal input level if configured as GPI4.
GPI3 enable. When bit 3 is set, a GPE is signaled when there has been a change in status of the MFUNC4
terminal input level if configured as GPI3.
GPI2 enable. When bit 2 is set, a GPE is signaled when there has been a change in status of the MFUNC2
terminal input if configured as GPI2.
GPI1 enable. When bit 1 is set, a GPE is signaled when there has been a change in status of the MFUNC1
terminal input if configured as GPI1.
GPI0 enable. When bit 0 is set, a GPE is signaled when there has been a change in status of the MFUNC0
terminal input if configured as GPI0.
can be signaled only if one of the
4–31
4.45 General-Purpose Input Register
The general-purpose input register provides the logical value of the data input from the GPI terminals, MFUNC5,
MFUNC4, and MFUNC2–MFUNC0. See Table 4–20 for a complete description of the register contents.
4GPI4_DATARGPI4 data bit. The value read from bit 4 represents the logical value of the data input from the MFUNC5 terminal.
3GPI3_DATARGPI3 data bit. The value read from bit 3 represents the logical value of the data input from the MFUNC4 terminal.
2GPI2_DATARGPI2 data bit. The value read from bit 2 represents the logical value of the data input from the MFUNC2 terminal.
1GPI1_DATARGPI1 data bit. The value read from bit 1 represents the logical value of the data input from the MFUNC1 terminal.
0GPI0_DATARGPI0 data bit. The value read from bit 0 represents the logical value of the data input from the MFUNC0 terminal.
4–32
4.46 General-Purpose Output Register
The general-purpose output register is used for control of the general-purpose outputs. See Table 4–21 for a
complete description of the register contents.
GPO4 data bit. The value written to bit 4 represents the logical value of the data driven to the MFUNC5
terminal if configured as GPO4. Read transactions return the last data value written.
GPIO3 data bit. The value written to bit 3 represents the logical value of the data driven to the MFUNC4
terminal if configured as GPO3. Read transactions return the last data value written.
GPO2 data bit. The value written to bit 2 represents the logical value of the data driven to the MFUNC2
terminal if configured as GPO2. Read transactions return the last data value written.
GPO1 data bit. The value written to bit 1 represents the logical value of the data driven to the MFUNC1
terminal if configured as GPO1. Read transactions return the last data value written.
GPO0 data bit. The value written to bit 0 represents the logical value of the data driven to the MFUNC0
terminal if configured as GPO0. Read transactions return the last data value written.
4.47 Serial Bus Data Register
The serial bus data register is for programmable serial bus byte reads and writes. This register represents the data
when generating cycles on the serial bus interface. See Table 4–22 for a complete description of the register
contents.
Bit76543210
NameSerial bus data
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:Serial bus data
Offset:B0h
Type:Read/Write
Default:00h
Table 4–22. Serial Bus Data Register Description
BITSIGNALTYPEFUNCTION
Serial bus data. This bit field represents the data byte in a read or write transaction on the serial interface.
7–0SBDATAR/W
On reads, bit 5 (REQBUSY) in the serial bus control and status register (PCI offset B3h, see Section 4.50)
must be polled to verify that the contents of this register are valid.
4–33
4.48 Serial Bus Index Register
The serial bus index register is for programmable serial bus byte reads and writes. This register represents the byte
address when generating cycles on the serial bus interface. See Table 4–23 for a complete description of the register
contents.
Bit76543210
NameSerial bus index
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:Serial bus index
Offset:B1h
Type:Read/Write
Default:00h
Table 4–23. Serial Bus Index Register Description
BITSIGNALTYPEFUNCTION
7–0SBINDEXR/WSerial bus index. This bit field represents the byte address in a read or write transaction on the serial interface.
4.49 Serial Bus Slave Address Register
The serial bus slave address register is for programmable serial bus byte read and write transactions. See Table 4–24
for a complete description of the register contents.
Bit76543210
NameSerial bus slave address
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:Serial bus slave address
Offset:B2h
Type:Read/Write
Default:00h
Table 4–24. Serial Bus Slave Address Register Description
BITSIGNALTYPEFUNCTION
7–1SLAVADDRR/W
0RWCMDR/W
Serial bus slave address. This bit field represents the slave address of a read or write transaction on the
serial interface.
Read/write command. Bit 0 indicates the read/write command bit presented to the serial bus on byte read
and write accesses
0 = A byte write access is requested to the serial bus interface.
1 = A byte read access is requested to the serial bus interface.
4–34
4.50 Serial Bus Control and Status Register
The serial bus control and status register communicates serial bus status information and selects the quick command
protocol. Bit 5 (REQBUSY) in this register must be polled during serial bus byte reads to indicate when data is valid
in the serial bus data register. See Table 4–25 for a complete description of the register contents.
Bit76543210
NameSerial bus control and status
TypeR/WRRRR/CR/WR/CR/C
Default00000000
Register:Serial bus control and status
Offset:B3h
Type:Read-only, Read/Write, Read/Clear
Default:00h
Table 4–25. Serial Bus Control and Status Register Description
BITSIGNALTYPEFUNCTION
Protocol select. When bit 7 is set, the send byte protocol is used on write requests and the receive byte
7PROT_SELR/W
6RSVDRReserved. Bit 6 returns 0 when read.
5REQBUSYR
4ROMBUSYR
3SBDETECTR/C
2SBTESTR/W
1REQ_ERRR/C
0ROM_ERRR/C
protocol is used on read commands. The word address byte (SBINDEX) in the serial bus index register (PCI
offset B1h, see Section 4.48) is not output by the PCI1410A device when bit 7 is set.
Requested serial bus access busy. Bit 5 indicates that a requested serial bus access (byte read or write)
is in progress. A request is made, and bit 5 is set, by writing to the serial bus slave address register (PCI
offset B2h, see Section 4.49). Bit 5 must be polled on reads from the serial bus interface. After the byte read
access has been requested, the read data is valid in the serial bus data register.
Serial EEPROM busy status. Bit 4 indicates the status of the PCI1410A serial EEPROM circuitry. Bit 4 is
set during the loading of the subsystem ID and other default values from the serial bus EEPROM.
0 = Serial EEPROM circuitry is not busy.
1 = Serial EEPROM circuitry is busy.
Serial bus detect. Bit 3 is set when the serial bus interface is detected through pullup resistors on the VCCD0
and VCCD1 terminals after reset. If bit 3 is cleared, the MFUNC4 and MFUNC1 terminals can be used for
alternate functions such as general-purpose inputs and outputs.
0 = Serial bus interface is not detected.
1 = Serial bus interface is detected.
Serial bus test. When bit 2 is set, the serial bus clock frequency is increased for test purposes.
0 = Serial bus clock is at normal operating frequency, 100 kHz (default).
1 = Serial bus clock frequency is increased for test purposes.
Requested serial bus access error. Bit 1 indicates when a data error occurs on the serial interface during
a requested cycle and may be set due to a missing acknowledge. Bit 1 is cleared by a write back of 1.
0 = No error is detected during user-requested byte read or write cycle.
1 = Data error is detected during user-requested byte read or write cycle.
EEPROM data error status. Bit 0 indicates when a data error occurs on the serial bus interface during the
auto-load from the serial bus EEPROM and may be set due to a missing acknowledge. Bit 0 also is set on
invalid EEPROM data formats. See Section 3.6.1, Serial Bus Interface Implementation, for details on
EEPROM data format. Bit 0 is cleared by a write back of 1.
0 = No error is detected during auto-load from serial bus EEPROM.
1 = Data error is detected during auto-load from serial bus EEPROM.
4–35
4–36
5 ExCA Compatibility Registers
The ExCA registers implemented in the PCI1410A device are register-compatible with the Intel 82365SL–DF
PCMCIA controller. The ExCA registers are identified by an offset value that is compatible with the legacy I/O
index/data scheme used on the Intel 82365 ISA controller. The ExCA registers are accessed through this scheme
by writing the register offset value into the index register (I/O base) and reading or writing the data register (I/O base
+ 1). The I/O base address used in the index/data scheme is programmed in the PC Card 16-bit I/F legacy mode base
address register (PCI offset 44h, see Section 4.28). The offsets from this base address run contiguous from 00h to
3Fh for the socket. See Figure 5–1 for an ExCA I/O-mapping illustration.
PCI1410A Configuration Registers
CardBus Socket/ExCA Base Address
Offset
10h
Host I/O Space
Index
Data
PC Card
ExCA
Registers
Offset
00h
3Fh
16-Bit Legacy-Mode Base Address
44h
Figure 5–1. ExCA Register Access Through I/O
The TI PCI1410A device also provides a memory-mapped alias of the ExCA registers by directly mapping them
into PCI memory space. They are located through the CardBus socket/ExCA base address register (PCI offset 10h,
see Section 4.12) at memory of fset 800h. See Figure 5–2 for an ExCA memory-mapping illustration. This illustration
also identifies the CardBus socket-register mapping, which is mapped into the same 4K window at memory offset
0h.
Host
PCI1410A Configuration Registers
CardBus Socket/ExCA Base Address
16-Bit Legacy-Mode Base Address
Offset
10h
44h
Memory Space
CardBus
Socket
Registers
ExCA
Registers
Offset
00h
20h
800h
844h
Figure 5–2. ExCA Register Access Through Memory
5–1
The interrupt registers in the ExCA register set, as defined by the 82365SL–DL specification, control such card
functions as reset, type, interrupt routing, and interrupt enables. Special attention must be paid to the interrupt routing
registers and the host-interrupt signaling method selected for the PCI1410A device to ensure that all possible
PCI1410A interrupts potentially can be routed to the programmable interrupt controller. The ExCA registers that are
critical to the interrupt signaling are the ExCA interrupt and general control register (ExCA offset 03h, see Section 5.4)
and the ExCA card status-change-interrupt configuration register (ExCA offset 05h, see Section 5.6).
Access to I/O-mapped 16-bit PC cards is available to the host system via two ExCA I/O windows. These are regions
of host I/O address space into which the card I/O space is mapped. These windows are defined by start, end, and
offset addresses programmed in the ExCA registers described in this section. I/O windows have byte granularity.
Access to memory-mapped 16-bit PC Cards is available to the host system via five ExCA memory windows. These
are regions of host memory space into which the card memory space is mapped. These windows are defined by start,
end, and offset addresses programmed in the ExCA registers described in this section. Table 5–1 identifies each
ExCA register and its respective ExCA offset. Memory windows have 4-Kbyte granularity.
Table 5–1. ExCA Registers and Offsets
EXCA REGISTER NAME
Identification and revision80000
Interface status80101
Power control80202
Interrupt and general control80303
Card status-change80404
Card status-change-interrupt configuration80505
Address window enable80606
I / O window control80707
I / O window 0 start-address low-byte80808
I / O window 0 start-address high-byte80909
I / O window 0 end-address low-byte80A0A
I / O window 0 end-address high-byte80B0B
I / O window 1 start-address low-byte80C0C
I / O window 1 start-address high-byte80D0D
I / O window 1 end-address low-byte80E0E
I / O window 1 end-address high-byte80F0F
Memory window 0 start-address low-byte81010
Memory window 0 start-address high-byte81111
Memory window 0 end-address low-byte81212
Memory window 0 end-address high-byte81313
Memory window 0 offset-address low-byte81414
Memory window 0 offset-address high-byte81515
Card detect and general control81616
Reserved81717
Memory window 1 start-address low-byte81818
Memory window 1 start-address high-byte81919
Memory window 1 end-address low-byte81A1A
The ExCA identification and revision register provides host software with information on 16-bit PC Card support and
Intel 82365SL-DF compatibility. This register is read-only or read/write, depending on the setting of bit 5
(SUBSYSRW) in the system control register (PCI offset 80h, see Section 4.29). See Table 5–2 for a complete
description of the register contents.
Bit76543210
NameExCA identification and revision
TypeRRR/WR/WR/WR/WR/WR/W
Default10000100
Table 5–2. ExCA Identification and Revision Register Description
BITSIGNALTYPEFUNCTION
7–6IFTYPER
5–4RSVDR/WReserved. Bits 5 and 4 can be used for Intel82365SL-DF emulation.
3–0365REVR/W
Interface type. These bits, which are hardwired as 10b, identify the 16-bit PC Card support provided by the
PCI1410A device. The PCI1410A device supports both I/O and memory 16-bit PC cards.
Intel82365SL-DF revision. This field stores the Intel82365SL-DF revision supported by the PCI1410A
device. Host software can read this field to determine compatibility to the Intel
Writing 0010b to this field puts the controller in 82365SL mode. This field defaults to 0100b upon PCI1410A
reset.
82365SL-DF register set.
5–4
5.2ExCA Interface Status Register
The ExCA interface status register provides information on the current status of the PC Card interface. An X in the
default bit value indicates that the value of the bit after reset depends on the state of the PC Card interface. See
Table 5–3 for a complete description of the register contents.
Bit76543210
NameExCA interface status
TypeRRRRRRRR
Default00XXXXXX
Table 5–3. ExCA Interface Status Register Description
BITSIGNALTYPEFUNCTION
7RSVDRReserved. Bit 7 returns 0 when read.
Card Power. Bit 6 indicates the current power status of the PC Card socket. This bit reflects how the ExCA
6CARDPWRR
5READYR
4CARDWPR
3CDETECT2R
2CDETECT1R
1–0BVDSTATR
power control register (ExCA offset 02h, see Section 5.3) is programmed. Bit 6 is encoded as:
0 = VCC and VPP to the socket are turned off (default).
1 = VCC and VPP to the socket are turned on.
Ready. Bit 5 indicates the current status of the READY signal at the PC Card interface.
0 = PC Card is not ready for data transfer.
1 = PC Card is ready for data transfer.
Card write protect. Bit 4 indicates the current status of WP at the PC Card interface. This signal reports to
the PCI1410A device whether or not the memory card is write protected. Furthermore, write protection for
an entire PCI1410A 16-bit memory window is available by setting bit 7 (WINWP) in the ExCA memory
window offset-address high-byte register (see Section 5.18).
0 = WP is 0. PC Card is read/write.
1 = WP is 1. PC Card is read-only.
Card detect 2. Bit 3 indicates the status of CD2 at the PC Card interface. Software can use this and bit 2
(CDETECT1) to determine if a PC Card is fully seated in the socket.
0 = CD2 is 1. No PC Card is inserted.
1 = CD2
is 0. PC Card is at least partially inserted.
Card detect 1. Bit 2 indicates the status of CD1 at the PC Card interface. Software can use this and bit 3
(CDETECT2) to determine if a PC Card is fully seated in the socket.
0 = CD1 is 1. No PC Card is inserted.
1 = CD1
is 0. PC Card is at least partially inserted.
Battery voltage detect. When a 16-bit memory card is inserted, the field indicates the status of the battery
voltage detect signals (BVD1, BVD2) at the PC Card interface, where bit 1 reflects the BVD2 status and bit 0
reflects BVD1.
00 = Battery is dead.
01 = Battery is dead.
10 = Battery is low; warning.
11 = Battery is good.
When a 16-bit I/O card is inserted, this field indicates the status of SPKR
PC Card interface. In this case, the two bits in this field directly reflect the current state of these card outputs.
(bit 1) and STSCHG (bit 0) at the
5–5
5.3ExCA Power Control Register
The ExCA power control register provides PC Card power control. Bit 7 (COE) of this register controls the 16-bit output
enables on the socket interface, and can be used for power management in 16-bit PC Card applications. The
PCI1410A device supports both the 82365SL and 82365SL-DF register models. Bits 3–0 (365REV filed) of the ExCA
identification and revision register (ExCA offset 00h, see Section 5.1) control which register model is supported. See
Table 5–4 and Table 5–5 for a complete description of the register contents.
5.3.1Intel 82365SL Support
Bit76543210
NameExCA power control
TypeR/WRR/WR/WRRR/WR/W
Default00000000
Register:ExCA power control
Offset:CardBus socket address + 802h; ExCA offset 02h
Type:Read-only, Read/Write
Default:00h
Table 5–4. ExCA Power Control Register 82365SL Support Description
BITSIGNALTYPEFUNCTION
Card output enable. Bit 7 controls the state of all of the 16-bit outputs on the PCI1410A device. This bit
7COER/W
6RSVDRReserved. Bit 6 returns 0 when read.
5AUTOPWRSWENR/W
4CAPWRENR/W
3–2RSVDRReserved. Bits 3 and 2 return 0s when read.
1–0EXCAVPPR/W
is encoded as:
0 = 16-bit PC Card outputs are disabled (default).
1 = 16-bit PC Card outputs are enabled.
Auto power switch enable. This bit is enabled by bit 7 of the system control register (PCI offset 80h, see
Section 4.29).
0 = Automatic socket power switching based on card detects is disabled.
1 = Automatic socket power switching based on card detects is enabled.
PC Card power enable.
0 = VCC = V
1 = VCC is enabled and controlled by bit 2 (ExCAPower) of the system control register (PCI offset 80h,
see Section 4.29), V
PC Card VPP power control. Bits 1 and 0 are used to request changes to card VPP. The PCI1410A device
ignores this field unless VCC to the socket is enabled (that is, 5 V or 3.3 V). This field is encoded as:
00 = No connection (default)
01 = V
CC
10 = 12 V
11 = Reserved
PP1
= V
PP2
= No connection
and V
PP1
PP2
are controlled according to bits 1–0 (EXCAVPP field).
5–6
5.3.2Intel 82365SL-DF Support
Bit76543210
NameExCA power control
TypeR/WRRR/WR/WRR/WR/W
Default00000000
Register:ExCA power control
Offset:CardBus socket address + 802h; ExCA offset 02h
Type:Read-only, Read/Write
Default:00h
Table 5–5. ExCA Power Control Register 82365SL-DF Support Description
BITSIGNALTYPEFUNCTION
Card output enable. Bit 7 controls the state of all of the 16-bit outputs on the PCI1410A device. This bit is
7COER/W
6–5RSVDRReserved. Bits 6 and 5 return 0s when read.
4–3EXCAVCCR/W
2RSVDRReserved. Bit 2 returns 0 when read.
1–0EXCAVPPR/W
encoded as:
0 = 16-bit PC Card outputs are disabled (default).
1 = 16-bit PC Card outputs are enabled.
VCC. Bits 4 and 3 are used to request changes to card VCC. This field is encoded as:
00 = 0 V (default)
01 = 0 V reserved
10 = 5 V
11 = 3.3 V
PC Card VPP power control. Bits 1 and 0 are used to request changes to card VPP. The PCI1410A device
ignores this field unless VCC to the socket is enabled (that is, 5 V or 3.3 V). This field is encoded as:
00 = No connection (default)
01 = V
CC
10 = 12 V
11 = Reserved
5–7
5.4ExCA Interrupt and General Control Register
The ExCA interrupt and general control register controls interrupt routing for I/O interrupts, as well as other critical
16-bit PC Card functions. See Table 5–6 for a complete description of the register contents.
Bit76543210
NameExCA interrupt and general control
TypeR/WR/WR/WR/WR/WR/WR/WR/W
Default00000000
Register:ExCA interrupt and general control
Offset:CardBus socket address + 803h; ExCA offset 03h
Type:Read/Write
Default:00h
Table 5–6. ExCA Interrupt and General Control Register Description
BITSIGNALTYPEFUNCTION
Card ring indicate enable. Bit 7 enables the ring indicate function of BVD1/RI. This bit is encoded as:
7RINGENR/W
6RESETR/W
5CARDTYPER/W
4CSCROUTER/W
3–0INTSELECTR/W
0 = Ring indicate is disabled (default).
1 = Ring indicate is enabled.
Card reset. Bit 6 controls the 16-bit PC Card RESET, and allows host software to force a card reset. Bit 6
affects 16-bit cards only. This bit is encoded as:
0 = RESET signal is asserted (default).
1 = RESET signal is deasserted.
Card type. Bit 5 indicates the PC Card type. This bit is encoded as:
0 = Memory PC Card is installed (default).
1 = I/O PC Card is installed.
PCI interrupt CSC routing enable bit. When bit 4 is set (high), the card status-change interrupts are routed
to PCI interrupts. When low, the card status-change interrupts are routed using bits 7–4 (CSCSELECT field)
in the ExCA card status-change interrupt configuration register (ExCA offset 05h, see Section 5.6). This bit
is encoded as:
0 = CSC interrupts are routed by ExCA registers (default).
1 = CSC interrupts are routed to PCI interrupts.
Card interrupt select for I/O PC Card functional interrupts. Bits 3–0 select the interrupt routing for I/O
PC Card functional interrupts. This field is encoded as:
0000 = No interrupt routing (default). CSC interrupts routed to PCI interrupts. These bit settings are