0.60 7/24/03 First Draft (described Overview, Block Diagram and Pin description only)
0.70 9/10/03 Addition of the regulator description (Spec 4) and the electrical characteristics
(Spec 5).
0.80 11/6/03 Change from NewCard to ExpressCard.
Mistakes in writing are corrected.
1.00 1/30/04 First Public Release
Mistakes in writing are corrected.
1.10 5/18/04 Changes in the chart of Global Reset Timing (Ch. 5.3.6).
Deletion of the 2.5V power supply support for the core logic.
RICOH COMPANY,LTD.
12345 2004 REV. 1.10
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
1 OVERVIEW
The R5C841 is a single chip solution offering five PCI functions (a PCI bus bridge to a PC Card, an IEEE
1394, an SD Card, a Memory Stick and an xD Picture Card) with an ExpressCard (USB Interface Type)
switch.
PC98/99/2001 compliant
PC2001 Design Guide compliant (Subsystem ID, Subsystem Vendor ID)
Compliant with ACPI and PCI Bus Power Management 1.1
Support Global Reset
Low Power consumption
Low operating power consumption due to the improvement of Power Management
Software Suspend mode compliant with ACPI
Hardware Suspend
CLKRUN#, CCLKRUN# support
The core logic - powered at 1.8V, the others – powered at 3.3V
1-slot PC Card
2 ports of IEEE1394
MDIOxx pins shared by SD Card, Memory Stick and xD Picture Card
− Providing Ricoh’s proprietary driver for Memory Stick and xD Picture Card
ExpressCard (USB Interface Type) supported by the PC Card passive adapter
PCI Bus Interface
Compliant with PCI Local Bus Specification2.3
The maximum frequency 33MHz
PCI Master/Target protocol support
PCI configuration space for each function
3.3V Interface (5V tolerant)
CardBus PC card Bridge
Compliant with PC Card Standard Release 8.1 Specification
The maximum frequency 33MHz
Support CardBus Master/Target protocol
Support Memory Write Posting/ Read Prefetching
Transfer transactions
− All memory read/write transaction (bi-direction)
Compliant with PC Card Standard Release 8.1 16-bit Specification
5 programmable memory windows
2 programmable I/O windows
Compliant with i82365SL compatible register set/ExCA
Support Legacy 16-bit mode (3E0, 3E2 I/O ports)
12345 2004 REV. 1.10 1-1
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
IEEE1394 Interface
Compliant with IEEE1394-1995 Standard Specification and IEEE1394a-2000 Standard Specification
Compliant with 1394 OHCI Release 1.1/1.0 Standard Specification
Support Cycle Master
Provide the Asynchronous receive/transmit FIFO and isochronous receive/transmit FIFO
Support Self-ID, physical DMA
Data transmission rate of 100, 200 and 400Mbps
2 ports of 1394 Cable interface
24.576MHz crystal oscillator and Internal 393.216MHz PLL
Support Cable Power monitoring (CPS)
Set Initial values of Power Class and CMC by PCI Configuration registers
Small Card Interface
SD Card
− Compliant with SD Memory Card Specification Version 1.01
− Compliant with SD Input/Output (SDIO) Card Specification Version 1.0
− Compliant with SD Host Controller Standard Specification Version 1.0
Memory Stick
− Compliant with Memory Stick Standard Format Specification Version 1.4
− Compliant with Memory Stick PRO Format Specification Version 1.00
• xD Picture Card
− Compliant with xD Picture Card Specification Version 1.00
− Compliant with xD Picture Card Host Guideline Version 1.00
− Backward compatible with the Smart Media
ExpressCard Interface
Compliant with EXPRESSCARD STANDARD Draft Release 1.0
Pass USB signals from a USB-HOST to a Card Slot
System Interrupt
Support INTA#, INTB# and INTC# for PC system interrupt (Each unit is programmable.)
Support Serialized IRQ
IRQx support for ISA system interrupt
Support Remote Wake Up by CSTSCHG
Support an internal regulator to convert the 3.3V power into the power for the internal core logic
Support Zoomed Video Port (Bypass type)
Support PC Card LED, 1394 LED, SD LED, Memory Stick LED and xD Picture Card LED
Support BAY function with the PC Card passive adapter
1: Pullup is attached when PC Card Interface is configured as a CardBus Interface Mode.
2: Pullup or Pulldown is configured according to the type of a card inserted.
12345 2004 REV. 1.10 3-7
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
Small Card Pin Assignments
Pin Media I/F SD Card Memory Stick xD Picture Card
In this chapter, the detailed signal pins in the R5C841 are explained. Every signal is divided
according to their relational interface.
Card Interface signal pin is multi
the card insertion; CardBus card or 16-bit card. And the pin function is redefined again.
# mark means the signal is on either active or asserted when the signal is low
no−mark means the signal is asserted when the signal is high−level.
The following the notations are used to describe the signal type.
IN
OUT
OUT (TS)
OUT (OD)
I/O
I/O (OD)
s/h/z
Input Pin
Output Pin
Three State Output Pin
Open Drain Output Pin
Input Output Pin
Input Output Pin (Output is Open Drain)
Sustained Tri−State is an active low tri−state signal owned and driven by one and only one agent
at a time. The agent that drives an s/h/z pin low must drive it high for at least one clock before
letting it float. A new agent cannot start driving an s/h/z signal any sooner than one clock after the
previous owner tri−state is.
−functional pin. Card Interface mode is configured automatically by
−level. Otherwise,
12345 2004 REV. 1.10 3-11
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
3.3.1 PCI Local Bus interface signals
Pin Name Type Description
PCI Bus Interface Pin Descriptions
PCICLK IN PCI CLOCK: PCICLK provides timing for all transactions on PCI. All other PCI signals
are sampled on the rising edge of PCICLK.
CLKRUN# I/O (OD) PCI CLOCK RUN: This signal indicates the status of PCICLK and an open drain output
to request the starting or speeding up of PCICLK. This pin complies with Mobile PCI
specification. If CLKRUN# is not implemented, then this pin should be tied low. In this
case, CardBus clock is controlled by setting of StopClock bit included Socket Control
Register. This signal has no meaning for the PC Card16 Cards, the CardBus Cards that
does not support CCLKRUN# and not insert Cards to socket. During PCI bus reset is
asserted, this pin placed in a high-impedance state.
And also, refer to the chapter 4.21 for the LED output.
PCIRST# IN PCI RESET: This input is used to initialize all registers, sequences and signals of the
R5C841 to their reset states. PCIRST# causes the R5C841 to place all output buffers in
a high-impedance state. The negation of PCIRST# requires no-bounds.
AD [31:0] I/O ADDRESS AND DATA: Address and Data are multiplexed on the same PCI pins.
C/BE [3:0]# I/O BUS COMMAND AND BYTE ENABLES: Bus Command and Byte Enables are
multiplexed on the same PCI pins. During the address phase of transaction, C/BE [3:0]#
define the bus command. During the data phase C/BE [3:0]# are used as Byte Enables.
The Byte Enables are valid for the entire data phase and determine which byte lanes
carry meaningful data.
PAR I/O PARITY: Parity is even parity across AD [31:0] and C/BE [3:0]#. PAR is stable and valid
one clock after the address phase. For data phases, PAR is stable and valid one clock
after either IRDY# is asserted on a write transaction or TRDY# is asserted on a read
transaction. The master drives PAR for address and write data phases; the target drives
PAR for read data phases.
FRAME# I/O
s/h/z
TRDY# I/O
s/h/z
IRDY# I/O
s/h/z
STOP# I/O
s/h/z
IDSEL IN INITIALIZATION DEVICE SELECT: This signal is used as chips select during
DEVSEL# I/O
s/h/z
PERR# I/O
s/h/z
CYCLE FRAME: This signal is driven by the current master to indicate the beginning
and duration of an access. FRAME# is asserted to indicate a bus transaction is
beginning. While FRAME# is asserted, data transfers continue. When FRAME# is
deasserted, the transaction is in the final data phase or has complete.
TARGET READY: This signal indicates the initialing agent‘s ability to complete the
current data phase of the transaction. TRDY# is used in conjunction with IRDY#. A data
phase is completed on any clock both TRDY# and IRDY# are sampled asserted. During
a read, TRDY# and IRDY# are sampled asserted. During a read, TRDY# indicates that
valid data is present on AD [31:0]. During a write, it indicates the target is prepared to
accept data. Wait cycles are inserted both IRDY# and TRDY# are asserted together.
INITIATOR READY: This signal indicates the initiating agent‘s ability to complete the
current data phase of the transaction. IRDY# is used in conjunction with TRDY#. A data
phase is completed on any clock both TRDY# and IRDY# are sampled asserted. During
a write, IRDY# indicates that valid data is present on AD [31:0]. During a read, it
indicates the target is prepared to accept data. Wait cycles are inserted both IRDY# and
TRDY# are asserted together.
STOP: This signal indicates the current target is requesting the master to stop the
current transaction.
configuration read and write transactions.
DEVICE SELECT: When actively driven, indicates the driving device has decoded its
address as the target of the current access. As an input, DEVSEL# indicates whether
any device on the bus has been selected.
PARITY ERROR: This signal is only for the reporting of data parity errors during all PCI
transactions except a Special Cycle. The R5C841 drives this output active “low” if it
detects a data parity error during a write phase.
12345 2004 REV. 1.10 3-12
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
Pin Name Type Description
PCI Bus Interface Pin Descriptions (Continued)
SERR# OUT (OD) SYSTEM ERROR: This signal is pure open drain. The R5C841 actively drives this
output for a single PCI clock when it detects an address parity error on either the primary
bus or the secondary bus.
REQ# OUT (TS) REQUEST: This signal indicates to the arbiter that the R5C841 desires use of the bus.
This is a point to point signal.
GNT# IN GRANT: This signal indicates the R5C841that access to the bus has been granted. This
is a point to point signal.
GBRST# IN GLOBAL RESET: This input is used to initialize registers for control of PME_Context
register. This should be asserted only once when system power supply is on.
3.3.2 System Interrupt signals
Pin Name Type Description
System Interrupt Pin Descriptions
INTA# OUT (OD)
INTB# OUT (OD)
INTC# OUT (OD)
UDIO0/SRIRQ#
UDIO1/GPIO0
UDIO2/GPIO1
UDIO3/GPIO2
UDIO4/GPIO3
UDIO5/LED0#
RI_OUT#/
PME#
I/O (TS)
OUT (OD)
PCI INTERRUPT REQUEST A: This signal indicates a programmable interrupt request
generated from the PC Card interface. This signal is connected to the interrupt line of the
PCI bus.
PCI INTERRUPT REQUEST B: This signal indicates a programmable interrupt request
generated from the IEEE 1394 interface. This signal is connected to the interrupt line of
the PCI bus.
PCI INTERRUPT REQUEST C: This signal indicates a programmable interrupt request
generated from the Memory Stick interface, the SD Card interface or the xD Picture Card
interface. This signal is connected to the interrupt line of the PCI bus.
USER DEFINABLE INPUT/OUTPUT: These signals can be used as user-definable
input/output. Users can define functions such as *GPIO, LED, IRQ and so on for each
pin in the PC Card Misc Control 4 Register. For details, refer to “PCI-CardBus Bridge
Registers Descripion” in the registers description.
*GPIO : General Purpose I/O
RING INDICATE OUTPUT: When 16-bit card is inserted and Ring Indicate Enable bit in
the Interrupt and General Control register is set to one, RI# on the IO Card is forwarded
to RI_OUT#.
POWER MANAGEMENT EVENT: When PME_En bit in Power Management
Control/Status register is set or when Power Status is set to any state mode except D0,
this signal is assigned as PME#.
12345 2004 REV. 1.10 3-13
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
3.3.3 16-bit PC Card Interface signals
Pin Name Type Description
16-bit PC Card Interface Pin Descriptions
CDATA [15:0]
CADR [25:0] OUT (TS) 16-bit Card ADDRESS BUS SIGNALS [25:0]:
I/O 16-bit Card DATA BUS SIGNALS [15:0]: Input buffer is disabled when the card socket
power supply is off or card is not inserted.
IORD#
IOWR#
OE#
WE#
CE1#
CE2#
REG#
READY/
IREQ#
WP/
IOIS16#
RESET
WAIT#
BVD1/
STSCHG#/
RI#
BVD2/
SPKR#/
LED
INPACK#
CD1#
CD2#
VS1
VS2
OUT (TS) 16-bit Card I/O READ:
OUT (TS) 16-bit Card I/O WRITE:
OUT (TS) 16-bit Card OUTPUT ENABLE:
OUT (TS) 16-bit Card WRITE ENABLE:
OUT (TS) 16-bit Card CARD ENABLE 1:
OUT (TS) 16-bit Card CARD ENABLE 2:
OUT (TS) 16-bit Card ATTRIBUTE MEMORY SELECT: This signal selects Attribute Memory
access or common memory access during 16bit memory cycle. Attribute memory
access is selected when this signal is “low” and common memory access is selected
when this signal is “high”.
IN 16-bit Card READY/BUSY or INTERRUPT REQUEST: This signal has two different
functions. READY/BUSY# input on the memory PC card, and IREQ# input on the I/O
card.
IN 16-bit Card WRITE PROTECT or CARD IS 16-BIT PORT: This signal has two different
functions. Write Protect Switch input on the memory PC card, and IOIS16 input on the
I/O card.
OUT (TS) 16-bit Card CARD RESET:
IN 16-bit Card BUS CYCLE WAIT:
IN 16-bit Card BATTERY VOLTAGE DETECT 1 or STATUS CHANGE: This signal has
three different functions. The battery voltage detect input 1 on the memory PC card, and
Card Status Change#/Ring Indicate# input on the I/O card.
IN 16-bit Card BATTERY VOLTAGE DETECT 2 or DIGITAL AUDIO or LED INPUT: This
signal has three different functions. The battery voltage detect input 2 on the memory
PC card, and SPEAKER# input or LED input on the I/O card.
IN 16-bit Card INPUT ACKNOWLEDGE:
IN 16-bit Card CARD DETECT 1: CD [2:1]# pins are used to detect the card insertion. CD
[2:1]# pins are used in conjunction with VS [2:1] to decode card type information.
IN 16-bit Card CARD DETECT 2: CD [2:1]# pins are used to detect the card insertion. CD
[2:1]# pins are used in conjunction with VS [2:1] to decode card type information.
I/O 16-bit Card CARD VOLTAGE CAPABILITY SENSE 1: VS [2:1] pins are used in
conjunction with CD [2:1]# to decode card type information.
I/O 16-bit Card CARD VOLTAGE CAPABILITY SENSE 2: VS [2:1] pins are used in
conjunction with CD [2:1]# to decode card type information.
12345 2004 REV. 1.10 3-14
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
3.3.4 CardBus PC Card Interface signals
Pin Name Type Description
CardBus PC Card Interface Pin Descriptions
CCLK
CCLKRUN#
CRST#
CAD [31:0]
CC/BE [3:0]#
CPAR
CFRAME#
CIRDY#
CTRDY#
CSTOP#
CDEVSEL#
CREQ#
OUT (TS)
I/O
s/h/z
OUT (TS)
I/O
I/O
I/O
I/O
s/h/z
I/O
s/h/z
I/O
s/h/z
I/O
s/h/z
I/O
s/h/z
IN
CardBus Clock: This signal provides timing for all transactions on the PC Card
Standard interface and it is an input to every PC Card Standard device. All other
CardBus PC Card signals, except CRST# (upon assertion), CCLKRUN#, CINT#,
CSTSCHG, CAUDIO, CCD [2:1]#, and CVS [2:1], are sampled on the rising edge of
CCLK, and all timing parameters are defined with respect to this edge.
CardBus Clock Run: This signal is used by cards to request starting (or speeding up)
clock; CCLK. CCLKRUN# also indicates the clock status. For PC cards, CCLKRUN# is
an open drain output and it is also an input. The R5C841 indicates the clock status of the
primary bus to the CardBus card.
CardBus Card Reset: This signal is used to bring CardBus Card specific registers,
sequencers and signals to a consistent state. Anytime CRST# is asserted, all CardBus
card output signals will be driven to their begin state.
CardBus Address/Data: These signals are multiplexed on the same CardBus card
pins. A bus transaction consists of an address phase followed by one or more data
phases. CardBus card supports both read and write bursts. CAD [31:0] contains a
physical address (32 bits). For I/O, this is a byte address; for configuration and memory
it is a DWORD address. During data phases, CAD [7:0] contains the east significant byte
(LSB) and CAD [31:24] contains the most significant byte (MSB). Write data is stable
and valid when CIRDY# is asserted and read data is stable and valid when CTRDY# is
asserted. Data is transferred during those clocks where both CIRDY# and CTRDY# are
asserted.
CardBus Command/Bye Enables: These signals are multiplexed on the same
CardBus card pins. During the address phase of a transaction, CC/BE [3:0]# define the
bus command. During the data phase, CC/BE [3:0]# are used as Byte Enables. The Byte
Enables are valid for the entire data phase and determine which byte lanes carry
meaningful data. CC/BE [0]# applies to byte 0 (LSB) and CC/BE [3]# applies to byte 3
(MSB).
CardBus Parity: This signal is even parity across CAD [31:0] and CC/BE [3:0]#. All
CardBus card agents require parity generation. CPAR is stable and valid clock after
either CIRDY# is asserted on a write transaction or CTRDY# is asserted on a read
transaction. Once CPAR is valid, it remains valid until one clock after the completion of
the current data phase. (CPAR has the same timing as CAD [31:0] but delayed by one
clock.) The master drives CPAR for address and write data phases; the target drives
CPAR for read data phases.
CardBus Cycle Frame: This signal is driven by the current master to indicate the
beginning and duration of a transaction. CFRAME# is asserted to indicate that a bus
transaction is beginning. While CFRAME# is asserted, data transfers continue. When
CFRAME# is deasserted, the transaction is in the final data phase.
CardBus Initiator Ready: This signal indicates the initiating agent’s (bus master’s)
ability to complete the current data phase of the transaction. CIRDY# is used in
conjunction with CTRDY#. A data phase is completed on any clock both CIRDY# and
CTRDY# are sampled asserted. During a write, CIRDY# indicates that valid data is
present on CAD [31:0]. During a read, it indicates the master is prepared to accept data.
Wait cycles are inserted until both CIRDY# and CTRDY# are asserted together.
CardBus Target Ready: This signal indicates the agent’s (selected target’s) ability to
complete the current data phase of the transaction. CTRDY# is used in conjunction with
CIRDY#. A data phase is completed on any clock both CTRDY# and CIRDY# are
sampled asserted. During a read, CTRDY# indicates that valid data is present on CAD
[31:0]. During a write, it indicates the target is prepared to accept data. Wait cycles are
inserted until both CIRDY# and CTRDY# are asserted together.
CardBus Stop: This signal indicates the current target is requesting the master to stop
the current transaction.
CardBus Device Select: This signal indicates the driving device has decoded its
address as the target of the current access when actively driven. As an input,
CDEVSEL# indicates whether any device on the bus has been selected.
CardBus Request: This signal indicates to the arbiter that this agent desires use of the
bus. Every master has its own CREQ#.
12345 2004 REV. 1.10 3-15
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
Pin Name Type Description
CardBus PC Card Interface Pin Descriptions (Continued)
CGNT#
CPERR#
CSERR#
CINT#
CSTSCHG
CAUDIO
CCD1#
CCD2#
CVS1
CVS2
OUT
I/O
s/h/z
IN
IN
IN
IN
IN
IN
I/O
I/O
CardBus Grant: This signal indicates to the agent that access to the bus has been
granted. Every master has its own CGNT#.
CardBus Parity Error: This signal is only for the reporting of data parity errors during all
CardBus Card transactions except a Special Cycle. An agent cannot report a CPERR#
until it has claimed the access by asserting CDEVSEL# and completed a data phase.
CardBus System Error: This signal is for reporting address parity errors, data parity
errors on the Special Cycle command, or any other system error where the result could
be catastrophic.
CardBus Interrupt Request: This signal is an input signal from CardBus card. It is level
sensitive, and asserted low (negative true), using an open drain output driver. The
assertion and deassertion of CINT# is asynchronous to CCLK.
CardBus Card Status Change: This signal is an input signal used to alert the system to
changes in the READY, WP, or BVD [2:1] conditions of the card. It is also used for the
system and/or CardBus card interface Wake up. CSTSCHG is asynchronous to CCLK.
CardBus Card Audio: This signal is a digital audio input signal from a CardBus Card to
the system’s speaker. CAUDIO has no relationship to CCLK.
CardBus Card Detect 1: CCD [2:1]# pins are used to detect the card insertion. CCD
[2:1]# pins are used in conjunction with CVS [2:1] to decode card type information.
CardBus Card Detect 2: CCD [2:1]# pins are used to detect the card insertion. CCD
[2:1]# pins are used in conjunction with CVS [2:1] to decode card type information.
CardBus Card Voltage Sense 1: CVS [2:1] pins are used in conjunction with CCD
[2:1]# to decode card type information.
CardBus Card Voltage Sense 2: CVS [2:1] pins are used in conjunction with CCD
[2:1]# to decode card type information.
3.3.5 Socket Power Control signals
Pin Name Type Description
VCC5EN#
VCC3EN#
VPPEN0
VPPEN1
OUT
OUT
OUT
OUT
VCC 5V ENABLE:
VCC 3.3V ENABLE:
VPP ENABLE 0:
VPP ENABLE 1:
3.3.6 Other signals
Pin Name Type Description
SPKROUT I/O
HWSPND# IN
TEST IN
SPEAKER OUTPUT: This signal is a digital audio output from SPKR#, and Connecting
this signal to pull-down sets the Serial ROM mode.
Hardware Suspend: This signal works as HWSPND# input. PCIRST# is not accepted
as long as HWSPND# is asserted so that VCC_PCI3V can be powered off. When Serial
IRQ mode is set, HWSPND# must be asserted after Serial IRQ mode on the chip-set
has been deasserted. When Hardware Suspend mode is off, HWSPND# must be
deasserted before Serial IRQ mode is enabled. When a power is on, follow the reset
sequence shown in the chapter 4.10 in order to confirm the input of PCIRST# and PCLK.
TEST: This signal is a test mode pin. Usually, this pin must be tied low.
Socket Power Control Signal Descriptions
Other Signals Descriptions
12345 2004 REV. 1.10 3-16
R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
3.3.7 IEEE1394 PHY Interface signals
Pin Name Type Description
IEEE1394 Cable Interface Pin Descriptions
TPAP1
TPAP0
TPBP1
TPBP0
TPAN1
TPAN0
TPBN1
TPBN0
TPBIAS1
TPBIAS0
CPS IN
I/O
I/O
I/O
I/O
I/O
TPA Positive : Twisted-pair cable A (positive) differential signal terminals.
TPB Positive : Twisted-pair cable B (positive) differential signal terminals.
TPA Negative : Twisted-pair cable A (negative) differential signal terminals.
TPB Negative : Twisted-pair cable B (negative) differential signal terminals.
TP Bias : Twisted-pair bias output. This pin is compliant with the IEEE1394a-2000, and
also monitors Insertion/desertion of other cables
Cable Power Status : This pin detects the Cable Power Status. See in Spec.4.22.3 for
details of CPS.
3.3.8 IEEE1394 Control signals
Pin Name Type Description
IEEE1394 Control Pin Descriptions
VREF I/O
REXT I/O
XI IN
XO OUT
FIL0 I/O
Voltage reference Resistance : It is necessary to connect a capacitance of 0.01uF
between this pin and AGND.
Resistance External: It is necessary to connect a resistor of 10kΩ±1% between this pin
and AGND.
X’tal In : 24.576MHz
X’tal Out : 24.576MHz
Filter : This pin connects to the PLL Filter. It is necessary to connect a capacitance of
0.01uF between this pin and AGND.
3.3.9 USB Interface signals
Pin Name Type Description
USB Interface Pin Descriptions
USBDP
USBDM
I/O
USB Data Port: These signals are differential signals. These signals are connected to HOST
USB D+/D- signals.
Pin Name
USBD+ IORD#
USBD- IOWR#
CPUSB# CADR22 IN
PERST# CDATA2 OUT
PC Card
Pin Name
Type Description
USB Interface Pin Descriptions
I/O
USB Data Port: These signals are differential signals.
USB ExpressCard Detect: This signal indicates whether the USB ExpressCard
is inserted to a socket.
ExpressCard Reset : This signal is a reset signal to ExpressCard.
12345 2004 REV. 1.10 3-17
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