lan91c100 Standard Microsystems Corp., lan91c100 Datasheet - Page 8

• Manufacturer Part Number: lan91c100
• Description: Feast ? Ast Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

PQFP/TQFP
111,116,
120,122,
128,134,
138,169,
174,180,
PIN NO.
185,200
14,32,
46,50,
66,75,
82,94,
203
201
208
207
206
197
199
202
2
DESCRIPTION OF PIN FUNCTIONSOF PIN FUNCTIONSPIN FUNCTIONS
Ground
Analog
Ground
Transmit
Enable
Transmit
Data
Carrier
Sense
Collision
Detection
Receive
Data
Transmit
Clock
Receive
Clock
Loopback
NAME
GND
AGND
TXEN
TXD
CRS
COL
RXD
TXC
RXC
LBK
SYMBOL
BUFFER
TYPE
O4
O4
O4
ID
ID
IP
IP
IP
8
Ground pins.
Analog ground pin.
Output. Used for 10 Mbps ENDEC. This pin
stays low when MIISEL is high.
NRZ transmit data output for 10 Mbps
ENDEC interface.
Input. Carrier sense from 10 Mbps ENDEC
interface. This pin is ignored when MIISEL
is high.
Input. Collision detection indication from 10
Mbps ENDEC interface. This pin is ignored
when MIISEL is high.
NRZ receive data input from 10 Mbps
ENDEC interface. This pin is ignored when
MIISEL is high.
Input. 10 MHz transmit clock used in 10
Mbps operation. This pin is ignored when
MIISEL is high.
Input. 10Mhz receive clock recovered by the
10 Mbps ENDEC. This pin is ignored when
MIISEL is high.
Output. Active when LOOP bit is set (TCR
bit
(MIISEL=X).
1).
Independent
DESCRIPTION
of
port
selection