lxt9781 Intel Corporation, lxt9781 Datasheet - Page 39

• Manufacturer Part Number: lxt9781
• Description: Fast Ethernet 10/100 Multi-port Transceiver With Rmii
• Manufacturer: Intel Corporation

Datasheet
LEDLATCH
Alternate Port Positions for LXT9761
Figure 17. Serial LED Streams
LEDS(0:7)
LEDCLK
(1 MHz)
LEDS(0)
LEDS(1)
LEDS(2)
LEDS(3)
LEDS(4)
LEDS(5)
LEDS(6)
LEDS(7)
Port 5
Each serial output reports a specific status condition for all ports. Ports 0 through 7 are assigned
bits 0:7 in each stream (bits 3 and 4 are not used on the LXT9761).
Serial outputs report the following conditions for each port:
•
•
•
•
•
•
•
•
LEDS0 Serial Output indicates Activity.
0 = Active1 = Inactive
LEDS1 Serial Output indicates Polarity
0 = Switched Polarity1 = Normal Polarity
LEDS2 Serial Output indicates Duplex (D).
0 = Full Duplex1 = Half Duplex
LEDS3 Serial Output indicates Link.
0 = Link active1 = Link inactive
LEDS4 Serial Output indicates Collision.
0 = Collision active1 = Collision inactive
LEDS5 Serial Output indicates Receive.
0 = Receive active1 = Receive inactive
LEDS6 Serial Output indicates Transmit.
0 = Transmit active1 = Transmit inactive
LEDS7 Serial Output indicates Speed.
0 = 100 Mbps1 = 10 Mbps
collision
(port 0)
transmit
(port 0)
(port 0)
receive
(port 0)
Port 0
activity
(port 0)
polarity
(port 0)
duplex
(port 0)
speed
(port 0)
link
collision
(port 1)
transmit
(port 1)
receive
(port 1)
Port 1
activity
(port 1)
speed
(port 1)
polarity
(port 1)
duplex
(port 1)
(port 1)
link
Fast Ethernet 10/100 Multi-Port Transceiver with RMII — LXT9761/9781
collision
(port 2)
transmit
(port 2)
activity
(port 2)
receive
(port 2)
Port 2
polarity
(port 2)
duplex
(port 2)
(port 2)
speed
(port 2)
link
Spare on LXT9761
Spare
collision
(port 3)
transmit
(port 3)
activity
(port 3)
duplex
(port 3)
receive
(port 3)
speed
(port 3)
polarity
(port 3)
(port 3)
link
collision
(port 4)
transmit
(port 4)
activity
(port 4)
Spare
(port 4)
speed
(port 4)
duplex
(port 4)
receive
(port 4)
polarity
(port 4)
link
collision
(port 5)
transmit
(port 5)
activity
(port 5)
Port 3
polarity
(port 5)
(port 5)
receive
(port 5)
speed
(port 5)
duplex
(port 5)
link
transmit transmit
collision collision
(port 6)
(port 6)
(port 6)
receive
Port 4
activity
(port 6)
(port 6)
(port 6)
(port 6)
(port 6)
polarity
duplex
speed
link
(port 7)
(port 7)
(port 7)
Port 5
activity
(port 7)
(port 7)
(port 7)
receive
(port 7)
polarity
(port 7)
duplex
speed
link
transmit
(port 0)
collision
(port 0)
Port 0
activity
(port 0)
duplex
(port 0)
(port 0)
speed
(port 0)
polarity
(port 0)
receive
(port 0)
link
transmit
(port 1)
collision
(port 1)
(port 1)
Port 1
activity
(port 1)
duplex
(port 1)
speed
(port 1)
polarity
(port 1)
receive
(port 1)
link
transmit
(port 2)
collision
(port 2)
Port 2
activity
(port 2)
(port 2)
receive
(port 2)
speed
(port 2)
duplex
(port 2)
polarity
(port 2)
link
collision
(port 3)
transmit
(port 3)
Spare on LXT9761
activity
(port 3)
polarity
(port 3)
receive
(port 3)
speed
(port 3)
Spare
duplex
(port 3)
(port 3)
link
transmit
(port 4)
collision
(port 4)
Spare
speed
(port 4)
activity
(port 4)
(port 4)
polarity
(port 4)
duplex
(port 4)
receive
(port 4)
link
transmit
(port 5)
collision
(port 5)
polarity
(port 5)
Port 3
(port 5)
speed
(port 5)
activity
(port 5)
duplex
(port 5)
receive
(port 5)
link
39