F81218
4. Pin Description
I/O8t5V-d100 - TTL level bi-directional pin with 8 mA source-sink capability, 5V tolerance, pull-down
100K ohms
I/O12t
I/OD12
PCI5V
OUT12
OD12
INt
- TTL level bi-directional pin with 12 mA source-sink capability
- TTL level bi-directional pin, Open-drain outpu with 12 mA sink capability
- bi-direction pin, slew rate control, 5V tolerance.
- Output pin with 12 mA source-sink capability
- Open-drain output pin with 12 mA sink capability
- TTL level input pin
INt5V
- TTL level input pin and 5V tolerance.
INts
- TTL level input pin and schmitt trigger
INts5V
- TTL level input pin and Schmitt trigger, 5V tolerance.
- Power
P
4.1 ISA/LPC Interface
Pin No. Pin Name
Type
Description
99
ISA_IRQA
IRQIN0
O12
Default is ISA IRQ output
INt5V
When in LPC mode (pin 39 PS_LPC =1), the pin becomes LPC
to ISA IRQ input. About IRQ index setting please refer to pin84
and pin86.
100
ISA_IRQB
IRQIN1
O12
Default is ISA IRQ output,
INt5V
When in LPC mode (pin 39 PS_LPC =1), the pin becomes LPC
to ISA IRQ input. About IRQ index setting please refer to pin74
and pin76.
1
2
PCIRST#
PME#
INts
System PCI reset active low.
Generated PME event.
OD12
3
WDT_OUT#
OD12
Watch dog timer output. When pin 50 power on setting
PS_WDT=0(default), Watch Dog timer time interval setting is
programmed by register. Once power on setting PS_WDT=1,
watch dog timer time interval will be fixed to 10 sec.
-3-
August, 2007
V0.33P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
