91C94 datasheet(10/120 Pages) SMSC

10 / 120 page

PIN NUMBER

QFP

VTQFP/

TQFP

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

Reset

RESET

IS with

pullup

Input - Active high Reset. This input is

not

considered

active

(except

powerdown mode) unless it is active

for at least 100ns to filter narrow

glitches

Address

Latch

BALE/nWE

IS with

pullup

ISA - Input - Address strobe. For

systems that require address latching.

The falling edge of BALE latches

address lines and nSBHE

PCMCIA - Write Enable input. For

writing into COR and CSR registers as

well as attribute memory space

Interrupt

INTR0/

nIREQ

O24

ISA - Active high interrupt signal. The

interrupt line selection is determined by

the value of INT SEL1-0 bits in the

Configuration Register. This interrupt is

tri-stated when not selected

PCMCIA - Active low interrupt request

output

INTR1/

nINPACK

O24

ISA - Output - Active high interrupt

signal. The interrupt line selection is

determined by the value of INT SEL1-0

bits in the Configuration Register. This

interrupt is tri-stated when not selected

PCMCIA

Output

asserted

acknowledge read cycles when the

card is enabled

22,23

20,21

Interrupt

INTR2-3

O24

ISA - Outputs - Active high interrupt

signals. The interrupt line selection is

determined by the value of INT SEL1-0

bits

the

Configuration

These interrupts are tri-stated when not

selected

91C94 Datasheet(PDF) 10 Page - SMSC Corporation

91C94 Datasheet(HTML) 10 Page - SMSC Corporation

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