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
Parameter
Min
Max
Unit
t24
t25
t26
t27
t28
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
40
300
5
5
100
400
900
400
900
—
ns
ns
ns
ns
ns
(TRANSMITTING—RECEIVE COLLISION DETECTED)
(RECEIVING—TRANSMIT COLLISON DETECTED)
TX_EN
RX/RY
COL
IDL
t24
t25
t26
t27
t28
5-5293(F).l
Figure 12. Serial 10 Mbits/s Timing for TX_EN, RX/RY, and COL
Lucent Technologies Inc.
29
AGERE [ AGERE SYSTEMS ]
