Non-PCI Single-Chip Full Duplex Ethernet Controller
PIN NO.
TQFP
QFP
PIN NAME
INTR3
TYPE
O24
DESCRIPTION
21
23
Local Bus - 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.
23
25
nIOCS16/
nIOIS16
OD24
Local Bus - Active low output asserted in 16 bit mode when
AEN is low and A4-A15 decode to the LAN91C96I address
programmed into the high byte of the Base Address
Register.
49
50
51
5
51
52
53
7
nIORD/
xDS
IS with
pullup
Local Bus, - Input. Active low read strobe used to access the
LAN91C96I IO space.
**
nIOWR/
R/nW
IS with
Local Bus - Input. Active low write strobe used to access the
LAN91C96I IO space.
pullup
**
nMEMR/
nOE
IS with
Local Bus - Active low signal used by the host processor to
read from the external ROM.
pullup
**
O4
EESK
Output. 4usec clock used to shift data in and out of a serial
EEPROM.
4
2
6
4
EECS
EEDO/
SDOUT
EEDI
O4
O4
Output. Serial EEPROM chip select.
Output. Connected to the DI input of the serial EEPROM.
3
5
I with
pull-
Input. Connected to the DO output of the serial EEPROM.
down
**
96,97
99
98,99
1
IOS0-1
IOS2
I with
Input. External switches can be connected to these lines to
select between predefined EEPROM configurations. The
values of these pins are readable.
Input. External switches can be connected to these lines to
select between predefined EEPROM configurations. The
values of these pins are readable.
pullup
I with
pullup
**
70
67
72
69
nTXLED/
nTXEN
OD16
INTERNAL ENDEC - Transmit LED output.
O162
OD16
EXTERNAL ENDEC - Active low Transmit Enable output.
nBSELED/
RXD
INTERNAL ENDEC - Board Select LED activated by
accesses to I/O space (nIORD or nIOWR active with AEN
low and valid address decode for Local Bus). The pulse is
stretched beyond the access duration to make the LED
visible.
I with
EXTERNAL ENDEC - NRZ receive data input.
pullup
69
68
71
70
nRXLED/
RXCLK
OD16
INTERNAL ENDEC - Receive LED output.
I with
EXTERNAL ENDEC - Receive clock input.
INTERNAL ENDEC - Link LED output.
pullup
nLNKLED/
TXD
OD16
O162
EXTERNAL ENDEC - Transmit Data output.
Rev. 11/18/2004
Page 16
SMSC DS – LAN91C96I
DATASHEET
SMSC [ SMSC CORPORATION ]
