LAN83C183 Datasheet, PDF (49/113 Pages) SMSC Corporation – FAST ETHERNET PHYSICAL LAYER DEVICE

COL
DPLX
NC
RESETn
RPTR
SPEED
Collision Output
O
COL is asserted HIGH when a collision between transmit and receive
data is detected.
Full/Half Duplex Select Input
I
When the ANEG pin is LOW, the DPLX pin selects Half/Full Duplex
operation.
DUPLX Pin
HIGH
LOW
Meaning
Full Duplex operation
Half Duplex operation
When the ANEG pin is HIGH, the DPLX pin is ignored and the
Half/Full Duplex operation is controlled from the Duplex Mode Select
bit (DPLX) in the MI serial port Control register or the AutoNegotiation
outcome.
No Connect
—
13 of the pins are not connected.
Hardware Reset Input
RESETn Pin Meaning
HIGH
Normal
LOW
Device is in a reset state.
Pullup I
Repeater Mode Enable Input
I
The RPTR pin controls the device repeater operation.
RPTR Pin
HIGH
LOW
Meaning
Repeater mode enabled
Normal operation
Speed Select Input
I
When the ANEG pin is LOW, the SPEED pin selects 10/100 Mbits/s
operation.
SPEED Pin
HIGH
LOW
Meaning
100 Mbits/s operation
10 Mbits/s operation
When the ANEG pin is HIGH, this pin is ignored and the speed is
determined from the Speed Select bit (SPEED) in the MI serial port
Control register or the
AutoNegotiation outcome.
SMSC DS – LAN83C183
49
Rev. 12/14/2000