LU3X54FT Datasheet, PDF (50/54 Pages) Agere Systems – QUAD-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX

LU3X54FT
QUAD-FET for 10Base-T/100Base-TX/FX
Data Sheet
July 2000
Timing Characteristics (Preliminary) (continued)
Table 36. 100 Mbits/s MII Transmit Timing
Name
Parameter
Min
t40 Rising Edge of TX_CLK Following TX_EN Assertion to CRS Assertion
—
t41 Rising Edge of TX_CLK Following TX_EN Assertion to TPOUT±
—
t42 Rising Edge of TX_CLK Following TX_EN Deassertion to CRS Deassertion —
Max Unit
40
ns
60
ns
40
ns
TX_CLK
TX_EN
TXD[3:0]
t40
CRS
t41
TPOUT±
1st BIT OF J
t42
1st BIT OF T
Figure 19. 100 Mbits/s MII Transmit Timing
5-3745(F).d
50
Lucent Technologies Inc.