LXT9761 datasheet(39/78 Pages) INTEL

39 / 78 page

Fast Ethernet 10/100 Multi-Port Transceiver with RMII — LXT9761/9781

Datasheet

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

Figure 17. Serial LED Streams

LEDCLK

LEDS(0)

LEDLATCH

LEDS(1)

LEDS(2)

LEDS(4)

LEDS(5)

LEDS(3)

LEDS(6)

LEDS(7)

activity

(port 0)

activity

(port 1)

activity

(port 2)

activity

(port 3)

activity

(port 4)

activity

(port 5)

(port 6)

(port 7)

activity

(port 0)

activity

(port 1)

activity

(port 2)

activity

(port 3)

activity

(port 4)

activity

(port 5)

polarity

(port 0)

polarity

(port 1)

polarity

(port 2)

polarity

(port 3)

polarity

(port 4)

polarity

(port 5)

(port 6)

(port 7)

polarity

(port 0)

polarity

(port 1)

polarity

(port 2)

polarity

(port 3)

polarity

(port 4)

polarity

(port 5)

duplex

(port 0)

duplex

(port 1)

duplex

(port 2)

duplex

(port 3)

duplex

(port 4)

duplex

(port 5)

(port 6)

(port 7)

duplex

(port 0)

duplex

(port 1)

duplex

(port 2)

duplex

(port 3)

duplex

(port 4)

duplex

(port 5)

collision

(port 0)

collision

(port 1)

collision

(port 2)

collision

(port 3)

collision

(port 4)

collision

(port 5)

(port 6)

(port 7)

collision

(port 0)

collision

(port 1)

collision

(port 2)

collision

(port 3)

collision

(port 4)

collision

(port 5)

receive

(port 0)

receive

(port 1)

receive

(port 2)

receive

(port 3)

receive

(port 4)

receive

(port 5)

(port 6)

(port 7)

receive

(port 0)

receive

(port 1)

receive

(port 2)

receive

(port 3)

receive

(port 4)

receive

(port 5)

link

(port 0)

link

(port 1)

link

(port 2)

link

(port 3)

link

(port 4)

link

(port 5)

(port 6)

(port 7)

link

(port 0)

link

(port 1)

link

(port 2)

link

(port 3)

link

(port 4)

link

(port 5)

transmit

(port 0)

transmit

(port 1)

transmit

(port 2)

transmit

(port 3)

transmit

(port 4)

transmit

(port 5)

(port 6)

(port 7)

transmit

(port 0)

transmit

(port 1)

transmit

(port 2)

transmit

(port 3)

transmit

(port 4)

transmit

(port 5)

speed

(port 0)

speed

(port 1)

speed

(port 2)

speed

(port 3)

speed

(port 4)

speed

(port 5)

(port 6)

(port 7)

speed

(port 0)

speed

(port 1)

speed

(port 2)

speed

(port 3)

speed

(port 4)

speed

(port 5)

activity

polarity

duplex

link

collision collision

receive

transmit

speed

(1 MHz)

Alternate Port Positions for LXT9761

Port 0

Port 1

Port 2

Spare

Port 3

Port 4

Port 5

Port 0

Port 1

Port 2

Spare

Port 3

Spare

Port 5

LEDS(0:7)

Spare on LXT9761

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