Please note that all data and specifications are subject to change without notice. All
the trade marks of products and companies mentioned in this data sheet belong to
their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or
systems where malfunction of these products can reasonably be expected to result
in personal injury. Winbond customers using or selling these products for use in
such applications do so at their own risk and agree to fully indemnify Winbond for
any damages resulting from such improper use or sales.
Publication Release Date:Feb. 2000
-I - Preliminary Revision 0.50
Page 3
LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
GENERAL DESCRIPTION
W83626F/W83626D is a transparent LPC-to-ISA bus conversion IC.
For the new generation Intel chipset Camino and Whitney, SiS Super South 960,
featuring LPC bus, there is no support for ISA bus and slots. However the demand of
ISA devices still exist. For such case, W83626F is the best companion solution for the
non-ISA chipset. Also the packages of W83626F had been chosen to be the most
economic solution for save the M/B board layout size and cost.
For the new generation chipset featuring LPC interface and support no ISA bus,
W83627HF (Winbond LPC I/O) together with the set of W83626F is the complete
solution.
FEATURES
LPC to ISA Bridge
•
Meet LPC Spec. 1.1
•
Support LDRQ# (LPC DMA), SERIRQ (serial IRQ)
•
Full ISA Bus Support except ISA Bus Masters
•
5V ISA and 3.3V LPC interfaces
•
All Software Transparent
•
IRQ Serializer for ISA Parallel IRQ transfer to Serial IRQ
Supports 3 fully ISA Compatible Slots without Buffering
•
•
LPC Bus at 33MHz
•
Supports Programmable ISA Bus Divide the PCI Clock into 3 or 4
•
All ISA Signals can be Isolate
•
14.318MHz in to generate two 14.318MHz buffer out and one 24.576MHz
•
Specific Keyboard Functions supported
Support 8 programmable general purpose I/O pins
•
Supports Configuration registers for programming performance
- TTL level bi-directional pin with 12 m A source-sink capability
12t
I/O
- TTL level bi-directional pin with 24 m A source-sink capability
24t
I/O
- 3.3V TTL level bi-directional pin with 12 m A source-sink capability
12tp3
I/O
- 3.3V TTL level bi-directional pin with 24 m A source-sink capability
24tp3
I/O
- TTL level bi-directional pin open drain output with 12 m A sink capability
D12t
I/O
- TTL level bi-directional pin with 24 m A source-sink capability
24t
OUT12 - TTL level output pin with 12 m A source-sink capability
OUT24 - TTL level output pin with 24 m A source-sink capability
O
- 3.3V TTL level output pin with 12 m A source-sink capability
12p3
O
- 3.3V TTL level output pin with 24 m A source-sink capability
24p3
O
- Open-drain output pin with 12 m A sink capability
D12
O
- Open-drain output pin with 24 m A sink capability
D24
INcs - CMOS level Schmitt-trigger input pin
INt - TTL level input pin
INtd - TTL level input pin with internal pull down resistor
INtu - TTL level input pin with internal pull up resistor
INts - TTL level Schmitt-trigger input pin
IN
- 3.3V TTL level Schmitt-trigger input pin
tsp3
W83626F PIN DESCRIPTION
LPC Interface
LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
SYMBOL PIN I/O FUNCTION
LAD[3:0] 16-19 I/O
These signal lines communicate address, control and data
12tp3
information over the LPC bus between a host and a peripheral.
LFRAME# 13 IN
PCICLK
21
PCIRST# 14 IN
SERIRQ 23 I/O
LDRQ# 22 O
Indicates start of a new cycle or termination of a broken cycle.
tsp3
PCICLK provides timing for all transactions on the LPC bus. All
INt
tsp3
D12t
12tp3
LPC signals are sampled on the rising edge of PCICLK, and all
timing parameters are defined with respect to this edge.
Reset signal. It can connect to PCIRST# signal on the host.
Serial IRQ Input/Output.
Encoded DMA Request signal.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
LPC Interface, continued
SYMBOL PIN I/O FUNCTION
PWRDN# 24 INtu Power Down. The signal is active low according to CR 44 Bit 7and
wake-up enable by hardware setting. There are eight different
power-down states (Power down Mode 3).
ISA Interface Signals
SYMBOL PIN I/O FUNCTION
SA[19:17] 58-56 OUT24 System Address Bus. These are the upper address lines that
define the ISA’s byte granular address space (up to 1 M byte).
SA[19:17] are at an unknown state upon PCIRST#.
SA[16:0] 54-51
SD[15:0] 122-1
AEN 59 OUT24 Address Enable. AEN is asserted during DMA cycles. This signal
IOR# 86 OUT24 I/O Read. IOR# is the command to an ISA I/O slave device that the
IOW# 84 OUT24 I/O Write. IOW# is the command to an ISA I/O slave device that
IOCHRDY
SYSCLK 92 OUT24 ISA System Clock. SYSCLK is the reference clock for the ISA
RSTDRV
IOCS16# 11INt 16-bit I/O Chip Select. This signal is driven by I/O devices on the
49-46
44-41
35-31
21
119-1
14
75-71
69-67
61
77 OUT24
OUT24 System Address Bus. These are the bi-directional lower address
lines that define the ISA’s byte granular address space (up to 1 M
byte). SA[16:0] are at an unknown state upon PCIRST#.
OUT24 System Data. SD[15:0] provide the 16-bit data path for devices
residing on the ISA Bus. The W83626F tri-states SD[15:0] during
PCIRST#.
is also driven high during W83626F initiated refresh cycles. AEN is
driven low upon PCIRST#.
slave may drive data on to the ISA data bus (SD[15:0]).
the slave may latch data from the ISA data bus (SD[15:0]).
INt
I/O Channel Ready. Resources on the ISA Bus negate IOCHRDY
to indicate that additional time (wait states) is required to complete
the cycle.
bus. The SYSCLK is generated by dividing PCICLK by 3 or 4.
Reset Drive. W83628F asserts RSTDRV to reset devices that
reside on the ISA Bus. The W83628F asserts this signal while the
PCIRST# is asserted.
ISA Bus to indicate that they support 16-bit I/O bus cycles.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
ISA Interface Signals , continued
SYMBOL PIN I/O FUNCTION
MEMCS16# 12 INt
IOCHCK# 76 INt I/O Channel Check. IOCHK# can be driven by any resource on
OWS# 81 INt
LA[23:17]
SMEMW# 82 OUT24
SMEMR# 83 OUT24
REFRESH# 91 OUT24
BALE 101 OUT24
SBHE# 102 OUT24 System Byte High Enable. SBHE# asserted indicates that a byte
MEMR# 112 OUT24
MEMW# 113 OUT24
MASTER#
RTCEN#
IRQ3 98
103-1
04
106-1
09
111
123 INt
OUT24
INt Parallel Interrupt Requested Input 3.
Memory Chip Select 16. MEMCS16# asserted indicates that the
memory slave supports 16-bit accesses.
the ISA bus during on detection of an error.
Zero Wait States. An ISA slave asserts ZEROWS# after its
address and command signals have been decoded to indicate that
the current cycle can be executed as an ISA zero wait state cycle.
ZEROWS# has no effect during 16-bit I/O cycles.
Unlatched Address. The LA[23:17] address lines are
bi-directional. These address lines allow accesses to physical
memory on the ISA Bus up to 16 Mbytes. LA[23:17] are outputs
when the W83628F owns the ISA Bus.
Standard Memory Write. SMEMW# asserted indicates the
current ISA bus cycle is a memory write cycle to an address below
1 Mbyte.
Standard Memory Read. SMEMR# asserted indicates the
current ISA bus cycle is a memory read cycle to an address below
1 Mbyte.
Refresh. REFRESH# asserted indicates that a refresh cycle is in
progress, or that an ISA master is requesting W83626F to
generate a refresh cycle. Upon PCIRST#, this signal is tri-stated.
Bus Address Latch Enable. BALE is an active high signal
asserted by the W83626F to indicate that the address (SA[19:0],
LA[23:17]) and SBHE# signal lines are valid.
The LA[23:17] address lines are latched on the trailing edge of
BALE. BALE remains asserted throughout DMA and ISA master
cycles. BALE is driven low upon PCIRST#.
is being transferred on the upper byte (SD[15:8]) of the data bus.
SBHE# is at an unknown state upon PCIRST#.
Memory Read. MEMR# asserted indicates the current ISA bus
cycle is a memory read.
Memory Write. MEMW# asserted indicates the current ISA bus
cycle is a memory write.
MASTER#. This signal is used with a DREQ line by an ISA master
to gain control of the ISA Bus.
RTC Function Enable.The pin applies a pull-down resistor (4.7K
ohm) to enable RTC functions ( RTCCS#,and IRQ8)
DACK7# 126 OUT24 DMA Acknowledge 7.
TC 100 OUT24 Terminal Count. The W83628F asserts TC to DMA slaves as a
127 I/O
INt Parallel Interrupt Requested Input 4.
INt Parallel Interrupt Requested Input 5.
INt Parallel Interrupt Requested Input 6.
INt Parallel Interrupt Requested Input 7.
INt Parallel Interrupt Requested Input 9.
INt Parallel Interrupt Requested Input 10.
INt Parallel Interrupt Requested Input 11.
INt Parallel Interrupt Requested Input 12.
INt Parallel Interrupt Requested Input 14.
INt Parallel Interrupt Requested Input 15.
INt
INt
INt
INt
INt
INt
INt
D24t
DMA Request 0. The DREQ signal indicates that either a slave
DMA device is requesting DMA services, or an ISA bus master is
requesting use of the ISA bus.
DMA channel or an ISA bus master has been granted the ISA bus.
DMA Acknowledge 6.
During power-on reset,this is pulled-hi internally(Select 4Eh) and
is defined as HEFRAS which provides the power-on value for
CR3 bit4 .A 4.7k ohm is recommended if intends to pull down
.(Select 2Eh)
terminal count indicator.
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LPC TO ISA BRIDGE SET
K/B , GPIO AND 80h PCS# Function
SYMBOL PIN I/O FUNCTION
80PCS#
KBEN#
ROMCS# 37 I/O
GPIO0
IRQ1
GPIO1
KBCS#
GPIO2
MCCS#
GPIO3
IRQIN
GPIO4
PLED
GPIO5
IRQ8
GPIO6
RTCCS#
GPIO7
IOHCS#
36 I/O
38 I/O
39 I/O
40 I/O
62 I/O
63 I/O
64 I/O
65 I/O
66 I/O
80h PORT Chip Select.(Default)
D12t
K/B Functions Enable. During power-on reset this pin is weak
pulled-up internally. The pin applied a pull-down resistor (4.7K
ohm) to enable K/B functions. (IRQ1,KBCS#,and MCCS#)
ROMCS#, this pin enable positive decoder of BIOS address range
D12t
D12t
D12t
D12t
D12t
D12t
D12t
D12t
[depend on CR03 ,bit 1 or external weak pulled-up during PCIRST
is asserted] .
General purpose I/O pin 0.
Parallel Interrupt Requested Input 1. This interrupt request is used
for specific K/B functions.
General purpose I/O pin 1.
12t
Decode the address 60h and 64h to output chip selected signal.
Enable by KBEN# power-on setting.
General purpose I/O pin 2.
Decode the address 62h and 66h to output chip selected signal
Enable by KBEN# power-on setting
General purpose I/O pin 3.
Programmable parallel IRQ input transfers to serial IRQ
Enable by KBEN# power-on setting
General purpose I/O pin 4.
Power LED output, this signal is low after system reset.
General purpose I/O pin 5.
Parallel Interrupt Requested Input 8. This interrupt request is used
for specific RTC functions. Enable by RTCEN# power-on setting
General purpose I/O pin 6.
Decode the address 70h and 71h to output chip selected signal
Enable by RTCEN# power-on setting
General purpose I/O pin 7.
Decode SA[15-11] are all 0 and setting by CR04 Bit 6.
W83626F/W83626D
PRELIMINARY
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LPC TO ISA BRIDGE SET
64 and 65 will do IRQ8 and RTCCS#
W83626F/W83626D
Clock Buffer and Generator
SYMBOL PIN I/O FUNCTION
14.318M 26 INt Main 14.318 MHz Clock Input.
14MOUT 1 27OUT
14MOUT 2 28OUT
24.576M
25.000M
Power Signals
SYMBOL PIN I/O FUNCTION
VCC5 5, 45, 55, 70, 85, 105, 120, PWR Digital 5V Supply.
VCC3 20 PWR Digital 3.3V Supply.
GND 15, 50, 60, 80, 95, 110, 125PWR Digital Ground.
AVCC3 25 PWR Analog 3.3V Supply.
AGND 30 PWR Analog Ground.
Power-on strapping Signals
SYMBOL PIN I/O FUNCTION
80PCS#/KBEN# 36 I/O
ROMCS# 37 I/O
MASTER/RTCEN# 123 INt
29 OUT
14.318 MHz Buffer Output 1.
12t
14.318 MHz Buffer Output 2.
12t
This pin is weak pull-up during 3 VDD ramp-up period. The default
12t
setting is 24.576 MHz and selected 25.000 MHz by external
pull-down with 4.7K ohm (recommended) during power ramp-up
period.
24.576 MHz Clock Output for Audio Codec or selected 25.000
MHz Clock Output for LAN on board solution.
D12t
D12t
Power-on strapping with
pulled-down register will enable
K/B and mouse functions. When it
is set, pin 38 , 39 and 40 will do
IRQ1, KBCS# and MCCS# signals.
If there is a boot-ROM (BIOS) ,the
signal must power-on with a weak
pulled-high register.
Power-on strapping with
pulled-down register will enable
RTC functions. When it is set, pin
PRELIMINARY
DACK6#/HEFRAS 128 I/O
signals.
D24t
- 9 - Revision 0.50
Set this function will change the
port that is used to access
configuration-registers . Default
setting is 4Eh ,but by power-on
strapping with a pulled-down
register change to 2Eh.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
CONFIGURATION REGISTER
1 Chip (Global) Control Register
Enable the following configuration registers by writing 26h to the location 4Eh twice.
Change the location to 2Eh by setting bit4 of CR03 or power-on strapping with a
pulled-down register on pin 128 .
CR03 (ROM Decoder Register, Default , 100011s0b)
Bit 7-5 Reserved.
Bit4 Configure Address and Value
= 0 Write 26h to the location 4E twice. (4Eh and 4Fh are index and data port)
= 1 Write 26h to the location 2E twice(By DACK6 power-on setting with
weak pull-down resistor).(The pair are 2Eh and 2Fh)
Bit 3-2
= 00 1MB BIOS ROM positive decode.
= 01 2MB BIOS ROM positive decode.
= 10 4MB BIOS ROM positive decode.
= 11 8MB BIOS ROM positive decode. (Default setting)
Bit 1
= 0 Disable BIOS ROM decoder. (Default setting)
=1 Enable BIOS ROM decoder.
Bit 0 BIOS Protected Mode.
=0 BIOS Writed Disable. (Default setting)
=1 BIOS Writed Enable.
This bit set to “ 1 ” for updated BIOS used allow Memory R/W to the range
of BIOS decoded. This bit is always set to “ 0 “ after reset.
BIOS Decode Range of High Memory.
BIOS ROM decoder Enable.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
CR04 (GPIO Status Register , Default 0ss00sssb)
If the GPIO is selected GPIO function, it will be controlled by CR10,13,14,15,and 16.The pins were
set non-GPIO functions by power-on setting pin or software programmed.
Bit 7(GPIO7) : = 1 Signal used as IOHCS# (Set by software only)
= 0 Signal used as GPIO function (Default)
Bit 6 (GPIO6): = 1 Signal used as RTCCS# (Set by pin123 RTCEN# )
= 0 Signal used as GPIO function (Default)
Bit 5 (GPIO5): = 1 Signal used as IRQ8 (Set by Pin 123 RTCEN# )
= 0 Signal used as GPIO function (Default)
Bit 4 (GPIO4): = 1 Signal used as PLED ( Set by software only and programmed by CR CR17 bit [5,4])
= 0 Signal used as GPIO function . (Default)
Bit 3 (GPIO3): = 1 Signal used as IRQIN (depended on CR17 bit[3..0])
= 0 Signal used as GPIO function (Default)
Bit 2 (GPIO2): = 1 Signal used as MCCS# (decode address 62h and 66h )
by Pin 36 KBEN# power-on setting
= 0 Signal used as GPIO function (Default)
Bit 1 (GPIO1): = 1 Signal used as KBCS# (decode address 60h and 64h)
by Pin 36 KBEN# power-on setting
= 0 Signal used as GPIO (Default)
Bit 0 (GPIO0): = 1 Signal used as IRQ1 by Pin 36 KBEN# power-on setting
= 0 Signal used as GPIO (Default)
CR05 (System Clock Register , Default 0x4D)
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Bit 7 SYSCLK Divider.
= 0 SYSCLK is equal to PCICLK divided by 4.
= 1 SYSCLK is equal to PCICLK divided by 3.
Bit 6 8-bit I/O Recovery Enable = 0 Disable bit [5:3] setting and uses 3.5 SYSCLKs for 8 bit I/O recovery time.
= 1 Enable bit [5:3] setting.
Bit 5:3 8-bit I/O Recovery Times .When bit 6= 1 , these 3 bits field define the additional number of SYSCLKs added to standard 3.5 SYSCLK recovery time for 8 bit I/O
= 000 0 SYSCLK
time.
= 1 The 16-bit I/O recovery time is decided by bits 1:0.
Bit 1:0 16-bit I/O Recovery Times.When bit 2 = 1 , this 2-bit field defines the additional number of SYSCLKs added to standard 3.5 SYSCLK recovery time for 16 bit I/O= 01 1 SYSCLK
= 10 2 SYSCLKs
= 11 3 SYSCLKs
= 00 4 SYSCLKs
CR10 (GPIO0-GPIO7 Function Enable Register, Default 0x00)
Bit 7 - 1: Reserved.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Bit 0: GPIO Function Activity.
= 1 All GPIO functions are activated . All registers (CR 11,12,13,14,15,16)
about GPIO function will be set default value .
= 0 All GPIO functions are inactive except the signals by power-on setting.
If any one of CR04 bit [7..0] was set non-GPIO function,the bit just affect
which was set GPIO function .
CR11, CR12 (Reserved Register For GPIO Control Without Configure Mode Entry )
The register is programmable when the bit 0 of CR10 is set to “ 1 “ and affected by
the settings of CR14 ( I/O Selectioin ) and CR16 ( Inversion ).
User defines port address to control GPIO functions. To control GPIO state without entry
configure mode. SA [0..7] can be defined on the bit [0..7] of CR11 and SA [8..15] on the bit [
0..7] of CR12.
For example:
Define address 50h in CR11 and 01h in CR12 after reset.
bit 0= -GPIO0 (=0 low state,
=1 Hi state )
bit 1=-GPIO1 (=0 low state
=1 Hi state)
,bit 2=GPIO2,.........,bit 7=GPIO7 the same definition as bit 0.
Set CR14 to “ 00h “ (output port) and CR16 to “ 00h “ (incoming/outgoing)
-o 150 aa ------(10101010) b indicated GP7,GP5,GP3 and GP1 are Hi state.
-o 150 55 ------(01010101) b indicated GP6,GP4,GP2,and GP0 are Hi state.
The register is programmable when the bit 0 of CR10 is set to “ 1 “.
Bit [7..0] are corresponding with GPIO [7..0] .
When set to a '1', respective GPIO port is programmed as an input port.
When set to a '0', respective GPIO port is programmed as an output port.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
CR15 (GPIO0-GPIO7 Data Register, Default 0x00)
The register is programmable when the bit 0 of CR10 is set to “ 1 “.
Bit [7..0] are corresponding with GPIO [7..0] .
If a port is programmed to be an output port, then its respective bit can be read/written.
If a port is programmed to be an input port, then its respective bit can only be read.
The register is programmable when the bit 0 of CR10 is set to “ 1 “.
Bit [7..0] are corresponding with GPIO [7..0] .
When set to a '1', the incoming/outgoing port value is inverted.
When set to a '0', the incoming/outgoing port value is the same as in data register.
CR17 (Power LED & IRQIN Control Register, Default 0x00)
Bit 7 -6:Reserved
Bit 5 -4: =00 Power LED pin is tri-stated.
=01 Power LED pin is driven low.
=10 Power LED pin is a 1Hz toggle pulse with 50 duty cycle.
=11 Power LED pin is a 1/4 Hz toggle pulse with 50 duty cycle.
Bit 3 - 0: These bits select IRQ resource for IRQIN. Four bits transfer the decimal value to octal
system. For example: Bit [3..0] = 1001b = 0x9h means IRQ 9 be selected.
Bit [3..0] = 1100b = 0xCh means IRQ12 be selected
CR20 ( Chip ID Register 1, Default 0x62)
Bit 7 - 0: DEVIDB7 - DEBIDB0 --> Device ID Bit 7 - Bit 0 = 0x 62(read only).
CR21 (Chip ID Register 2 ,
Bit 7 - 0: DEVREVB7 - DEBREVB0 --> Device Rev Bit 7 - Bit 0 = 0x61(read only).
Default 0x6x)
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Bit [3..0] indicate the version of the chip.
CR30 (Mask Range of Address Decoder 1 Register, Default 0x00)
This register is used to mask address bits (A7~A0) for specify address decoder, if the corresponding bit
of this register is set to a 1, the corresponding address bit(A7~A0) is ignore by the specify address
decoder.
For example: If the decoding range is 0x3F8 ~ 0x3FF,you can set 0x3F8 to CR 31, 32 and 07h to
CR30 .
This register contains the address for specify decoder.
CR 31 Bit [7..0] are used to define low byte of specity address.
CR 32 Bit [7..0] are used to define high byte of specify address.
For example: Decoding address was set to be 0x3F5h and write F5h to CR 31 and 03h to CR 32 .
CR33 ((Mask Range of Address Decoder 2 Register, Default 0x00)
This register is used to mask address bits(A7~A0) for specify address decoder , if the corresponding bit
of this register is set to a 1, the corresponding address bit(A7~A0) is ignore by the specify address
decoder .
For example: If the decoding range is 0x3F8 ~ 0x3FF,you can set 0x3F8 to CR 34, 35 and 07h to
CR33 .
This register contains the address for specify decoder.
CR 34 Bit [7..0] are used to define low byte of specity address.
CR 35 Bit [7..0] are used to define high byte of specify address.
For example: Decoding address was set to be 0x3F5h and write F5h to CR34 and 03h to CR35.
This register contains the address for specify decoder.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
CR40 (Clock controllable Register , Default 0x00)
This register is used to enable clock power-down state of the chip. It will shut down 14.318MHz.
Bit 7 -1: Reserved.
Bit 0 : =1 Power down mode.When entry power down mode , clock output will be turn off.
=0 Normal used.
CR41 (Clock tested Register , :Reserved for Winbond internal test)
The Fast mode is used to improve the performance of transferable interface, because some
applications will do fast transaction . To set the suitable bits to decide on specify range or all ISA cycles
will meet the requested I/O cycles.
Bit 7 : Reserved.
Bit 6 : = 1 Enable Fast mode by ADDRESS DECODER 2 and SYSCLK is depended on
the state of Bit 3 .
= 0 ADDRESS DECORDER 2 doesn’t affect Fast Mode and do original operation.
Bit 5 : = 1 Enable Fast mode by ADDRESS DECODER 1 and SYSCLK is depended on
the state of Bit 3.
= 0 ADDRESS DECORDER 1 doesn’t affect Fast Mode and do original operatio
Bit 4 : = 1 Enable Fast Mode of whole chip, whole ISA cycle of this bridge will be done
Fast Mode operation and SYSCLK is depended on the state of Bit 3.
= 0 Normal operation, just Bit 6 and Bit 5 can affect Fast Mode operation.
Bit 3 : = 1 SYSCLK is equal to PCICLK divided by 1 when decoding range is in Fast Mode.
= 0 SYSCLK is equal to PCICLK divided by 2 when decoding range is in Fast Mode.
Bit 2 : = 1 Disabled Memory cycles.
= 0 Normal used.
Bit 1 : = 1 Forced 16 bit cycles .
= 0 Normal used.
Bit 0 : = 1 8-bit data bus decode only. Only SD [7..0] signals are active.
Bit 7 : =1 Enable Power-down functions.(ISOLATE# was power-on setting.)
=0 Normal used.
Bit 6 : Reserved.
Bit 5 : =1 SA10 is set as mask (ignored) bit in ADDRESS DECODER 2. The function is used to improved
the performance of ECP mode of LPT. If the decoding range is 0x378-0x37F and 0x778-0x77F
,you can set this bit to 1 for Fast Mode operation.
= 0 Normal operation.
Bit 4 : =1 SA10 is set as mask (ignored) bit in ADDRESS DECODER 1. The function is used to improved
the performance of ECP mode of LPT. If the decoding range is 0x378-0x37F and 0x778-0x77F
,you can set this bit to 1 for Fast Mode operation.
= 0 Normal operation.
Bit 3 : SERIRQ POWER DOWN SELECT.
=1 When the chip is in power down mode, the SERIRQ block is inactive.
=0 When the chip is in power down mode, the SERIRQ block is active.
Bit 2 -0 : Set SYSCLK divided ratio.(2,4,8,16,32,64)
= 000 Disable Power-down Mode3.
= 001 SYSCLK divided by 2.
= 010 SYSCLK divided by 4.
= 010 SYSCLK divided by 4
= 011 SYSCLK divided by 8
= 100 SYSCLK divided by 16
= 101 SYSCLK divided by 32
= 110 SYSCLK divided by 64
= 111 LPC I/F,all clocks and signals will be tristated.
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
CR45 (Wake-Up Event Register, Default 0x01)
Bit 7 :=0 Normal used.
=1 Wake up from power-down mode by IRQ 7 occurred.
Bit 6 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 6 occurred.
Bit 5 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 5 occurred.
Bit 4 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 4 occurred .
Bit 3 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 3 occurred.
Bit 2 :Reserved.
Bit 1 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 1 occurred.
Bit 0 : =0 Normal used.
=1 Wake up from power-down mode by rising edge of ISOLATE# signal occurred.
CR46(Wake-Up Event Register, Default 0x00)
Bit 7 -5:Reserved
Bit 4 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 12 occurred .
Bit 3 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 11 occurred.
Publication Release Date: Feb 2000
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Bit 2 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 10 occurred.
Bit 1 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 9 occurred.
Bit 0 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 8 occurred.
CR48 (DMA CYCLES FAST MODE SELECT, Default 0x00) (Write only)
The Fast mode is used to improve the performance of transferable interface, because some
applications will do fast transaction . To set the suitable bits to decide on specify range or all ISA cycles
will meet the requested DMA cycles.
Bit 7 : = 0 Normal used.
= 1 The DMA cycles of channel 7 is in fast mode.
Bit 6 : = 0 Normal used.
= 1 The DMA cycles of channel 6 is in fast mode.
Bit 5 : = 0 Normal used.
= 1 The DMA cycles of channel 5 is in fast mode.
Bit 4 : Reserved.
Bit 3 : = 0 Normal used.
= 1 The DMA cycles of channel 3 is in fast mode.
Bit 2 : = 0 Normal used.
= 1 The DMA cycles of channel 2 is in fast mode.
Bit 1 : = 0 Normal used.
= 1 The DMA cycles of channel 1 is in fast mode.
Publication Release Date: Feb 2000
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Page 24
Bit 0 : = 0 Normal used.
= 1 The DMA cycles of channel 0 is in fast mode.
LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Publication Release Date: Feb 2000
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LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
REVISION NOTICES.
a. 4/16/1999 modified page 2, 3 to correct wrong typewrite and changed to Rev 0.02.
b. 5/18/1999 modified page 1,3 to define K/B functions , 80portCS# and IRQINX.Changed
ROMCS#from pin 39 to pin37.page 8,added and modified the function description and
changed to Rev0.03
c.5/27/1999 modified page 7 to add power-on setting function in DACK6# for entry port of
configure mode(HERFRA). In page 6,Master# was added RTCEN power-on setting function.
In page 8,80PCS# was added KBEN power-on setting function and GPIO 5 added a new
function IRQ8,GPIO6 added RTCCS#,and GPIO7 added IOHCS#.Rev 0.04 changed.
d.5/31/1999 Added Power-Down functin in islate#( page 5)and PLED function in GPIO3(page 8)
IRQIN2 was removed and IRQIN1 modified to IRQIN.
e.6/8/1999 Renamed ISOLATE# to PWRDN# and corrected RTCCS# decode address
(71,72--> 70,71),
f. 6/9/1999 modified the function descriptioin of pin 29.Rev 0.05 changed.
g.7/9/1999 Combined configuration register and modified new schematic.Rev 0.06.
h.7/21/1999 Modified default value of CR and add ed some descriptions and corresponding table.
Rev 0.07.
i. 8/24/1999 Modified recommended circuit and register descriptions. Corrected power-on setting
description of signal ROMCS# . Rev 0.10.
j.10/08/1999 modified pin configuration ,pin62 and 63.Rev 0.11
k. 11/16/1999 Modified schematic circuit and added the function description of CR43 and CR44. Rev
0.12.
l. 02/20/2000 Add new pacake 100-LQFP (W83626D) dimention
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LPC TO ISA BRIDGE SET
Package DIMENSIONS 1 for W83626F (128-pin PQFP)
W83626F/W83626D
PRELIMINARY
103
128
102
1
Seating Plane
e
See Detail F
H
E
E
65
64
Symbol
A
A
b
c
1
2
D
D
H
D
39
38
b
A
2
A
1
A
y
c
L
L
1
Detail F
E
e
D
H
H
E
L
L1
y
0
Note:
1.Dimension D & E do not include interlead
2.Dimension b does not include dambar
3.Controlling dimension : Millimeter
4.General appearance spec. should be based
5. PCB layout please use the "mm".
Dimension in mm
MinNomMax
0.25
0.350.45
2.72
2.57
0.10
0.20
0.10
0.15
14.00
13.90
19.9020.0020.10
0.50
17.20
17.00
23.0023.20
0.80
0.65
1.60
0
flash.
protrusion/intrusion
on final visual inspection spec.
.
2.87
0.30
0.20
14.10
17.40
23.40
0.95
0.08
7
Dimension in inch
MaxNomMin
0.010
0.014 0.018
0.113
0.107
0.101
0.004
0.004
0.547
0.783 0.787 0.791
0.669
0.905 0.913 0.921
0.025
0.012
0.008
0.008
0.006
0.555
0.551
0.020
0.685
0.677
0.037
0.031
0.063
0.003
0
7
Publication Release Date: Feb 2000
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LPC TO ISA BRIDGE SET
Package DIMENSIONS 2 for W83626D (128-pin LQFP)
W83626F/W83626D
PRELIMINARY
H
E
102
103
128
138
Seating Plane
E
e
See Detail F
Symbol
65
64
HD
D
39
b
A
2
A
1
A
y
c
L
L
1
Detail F
1
A
2
A
b
c
D
E
e
D
H
H
E
L
1
L
y
0
Note:
1.Dimension D & E do not include interlead
2.Dimension b does not include dambar
3.Controlling dimension : Millimeter
4.General appearance spec. should be based
5. PCB layout please use the "mm".
Dimension in mm
MinNomMax
0.05 -----
1.40
1.35
0.13
0.16
0.10
-----
14.00
13.90
19.9020.0020.10
0.40 BSC
-----
16.00
-----
-----
-----22.00
0.60
0.45
1.00
0
flash.
protrusion/intrusion
on final visual inspection spec.
.
14.10
-----
-----
-----
0.15
1.45
0.23
0.20
0.75
0.08
7
Dimension in inch
0
MaxNomMin
---- 0.006
0.057
0.055
0.009
0.006
0.008
-----
0.555
0.551
-----
0.016
-----
0.630
0.030
0.024
0.039
0.003
0.002
0.053
0.005
0.004
0.547
0.783 0.787 0.791
-----
-----
----- 0.866 -----
0.018
7
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TEL: 886-35-770066
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TLX: 16485 WINTPE
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TEL: 852-27516023-7
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TEL: 1-408-9436666
FAX: 1-408-9436668
Please note that all data and specifications are subject to change without notice. All the trade marks of
products and companies mentioned in this data sheet belong to their original owners
NOTE4:
R7 for ROMCS# power-on setting used.
The circuit is for flashable ROM
For BIOS read-only used can connect
OE# and CE# together to ROMCS# and
without MEMR# and MEMW#.