LU6612 Datasheet, PDF (29/36 Pages) Agere Systems – LU6612 FASTCAT TM Single-FET for 10Base-T/100Base-TX

Data Sheet
July 2000
LU6612
FASTCAT Single-FET for 10Base-T/100Base-TX
Timing Characteristics (Preliminary) (continued)
Table 29. Serial 10 Mbits/s Timing for TX_EN, RX/RY, and COL
Name
t24
t25
t26
t27
t28
Parameter
Time to Assert COL; LU6612 Is Transmitting; Receive Activity Starts
Time to Deassert COL; LU6612 Is Transmitting; Receive Activity Ceases
Time to Assert COL; LU6612 Is Receiving; Transmit Activity Starts
Time to Deassert COL; LU6612 Is Receiving; Transmit Activity Ceases
COL Pulse Width
Min
Max Unit
40
400 ns
300
900 ns
5
400 ns
5
900 ns
100
— ns
TX_EN
(TRANSMITTING—RECEIVE COLLISION DETECTED)
(RECEIVING—TRANSMIT COLLISON DETECTED)
RX/RY
COL
IDL
t24
t25
t26
t28
Figure 12. Serial 10 Mbits/s Timing for TX_EN, RX/RY, and COL
t27
5-5293(F).l
Lucent Technologies Inc.
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