LU3X54FTL Datasheet, PDF (46/52 Pages) Agere Systems – QUAD-FET for 10Base-T/100Base-TX/FX

LU3X54FTL
QUAD-FET for 10Base-T/100Base-TX/FX
Data Sheet
July 2000
Timing Characteristics (Preliminary) (continued)
Table 32. Serial 10 Mbits/s Timing for TX_EN, TPIN, and COL
Name
Parameter
Min
t25 Time to Assert COL; LU3X54FTL Is Transmitting; Receive Activity Starts
40
t26 Time to Deassert COL; LU3X54FTL Is Transmitting; Receive Activity
300
Ceases
t27 Time to Assert COL; LU3X54FTL Is Receiving; Transmit Activity Starts
5
t28 Time to Deassert COL; LU3X54FTL Is Receiving; Transmit Activity Ceases 5
t29 COL Pulse Width
100
Max Unit
400 ns
900 ns
400 ns
900 ns
— ns
TX_EN
(TRANSMITTING—RECEIVE COLLISION DETECTED)
(RECEIVING—TRANSMIT COLLISON DETECTED)
TPIN±
COL
IDL
t25
t26
t27
t29
Figure 15. Serial 10 Mbits/s Timing for TX_EN, TPIN, and COL
t28
5-5293(F).er3
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Lucent Technologies Inc.