LXT9763 — Fast Ethernet 10/100 Hex Transceiver with Full MII
Figure 23. 100BASE-TX Transmit Timing (5B Mode)
0ns
250ns
t1
TX_CLK
TX_EN
t2
TXD<4:0>
t5
TPFO
t4
t3
CRS
Table 25. 100BASE-TX Transmit Timing Parameters (5B Mode)
1
Parameter
Sym
Min
Typ
Max
Units
Test Conditions
TXD<4:0>, TX_EN, TX_ER setup to TX_CLK High
TXD<4:0>, TX_EN, TX_ER hold from TX_CLK High
TX_EN sampled to CRS asserted
t1
t2
t3
t4
t5
15
0
–
–
–
–
–
–
–
ns
ns
ns
ns
BT
–
–
–
–
–
–
44
52
6
TX_EN sampled to CRS de-asserted
–
TX_EN sampled to TPOP out (Tx latency)
–
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
50
Datasheet
INTEL [ INTEL ]
