91C94 Datasheet, PDF (10/120 Pages) SMSC Corporation – ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM

PIN NUMBER
VTQFP/
QFP TQFP
NAME
67
65 Reset
27
25 Address
Latch
19
17 Interrupt
20
18
22,23 20,21 Interrupt
SYMBOL
RESET
BALE/nWE
BUFFER
TYPE
IS with
pullup
IS with
pullup
DESCRIPTION
Input - Active high Reset. This input is
not considered active (except in
powerdown mode) unless it is active
for at least 100ns to filter narrow
glitches
ISA - Input - Address strobe. For
systems that require address latching.
The falling edge of BALE latches
address lines and nSBHE
INTR0/
nIREQ
PCMCIA - Write Enable input. For
writing into COR and CSR registers as
well as attribute memory space
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
INTR1/
nINPACK
PCMCIA - Active low interrupt request
output
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
INTR2-3
PCMCIA - Output asserted to
acknowledge read cycles when the
card is enabled
O24 ISA - Outputs - Active high interrupt
signals. The interrupt line selection is
determined by the value of INT SEL1-0
bits in the Configuration Register.
These interrupts are tri-stated when not
selected
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