LAN83C183 Datasheet, PDF (51/113 Pages) SMSC Corporation – FAST ETHERNET PHYSICAL LAYER DEVICE

PLED1n/MDA1n
Programmable LED Output/MI Address Bit
Pullup O.D. I/O
The default function of this pin is to be a Full Duplex Detect output.
This pin can also be programmed through the MI serial port to indi-
cate other events or be user controlled. This pin can drive an LED
from both V_DD and GND.
When programmed as Full Duplex Detect Output (default):
PLED1n/MDA1n
Pin
HIGH
LOW
Function
Half-Duplex
Full-Duplex
During powerup or reset, this pin is high-impedance and the level on
this pin is latched in as the physical address device address MDA1n
for the MI serial port.
PLED0n/MDA0n
Programmable LED Output/MI Address Bit
Pullup O.D. I/O
The default function of this pin is to be a 10 Mbits/s Link Detect out-
put. This pin can also be programmed through the MI serial port to
indicate other events or be user controlled. This pin can drive an LED
from both V_DD and GND.
When programmed as 10 Mbits/s Link Detect Output (default):
PLED0n/MDA0n
Pin
HIGH
LOW
Function
No Detect
10 Mbits/s Link Detected
2.6 POWER SUPPLY
During powerup or reset, this pin is high-impedance and the value on
this pin is latched in as the address MDA0n for the MI serial port.
GND
V_DD
Ground
I
There are six ground pins. They must be connected to ground (0
Volts).
Positive Supply
I
There are six V_DD pins. They must be connected to
3.3 ± 5% Volts.
SMSC DS – LAN83C183
51
Rev. 12/14/2000