lxt9763 Intel Corporation, lxt9763 Datasheet - Page 48

• Manufacturer Part Number: lxt9763
• Description: Fast Ethernet 10/100 Hex Transceiver With Full Mii
• Manufacturer: Intel Corporation

LXT9763 — Fast Ethernet 10/100 Hex Transceiver with Full MII
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TXD<3:0>, TX_EN, TX_ER setup to TX_CLK High
TXD<3:0>, TX_EN, TX_ER hold from TX_CLK High
TX_EN sampled to CRS asserted
TX_EN sampled to CRS de-asserted
TX_EN sampled to TPFO out (Tx latency)
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
Figure 21. 100BASE-TX Transmit Timing (4B Mode)
Table 23. 100BASE-TX Transmit Timing Parameters (4B Mode)
TXD<3:0>
TX_CLK
TX_EN
TPFO
CRS
Parameter
0ns
t3
t5
t2
t1
Sym
t1
t2
t3
t4
t5
Min
15
0
–
–
–
Typ
44
52
13
–
–
1
t4
250ns
Max
–
–
–
–
–
Units
BT
ns
ns
ns
ns
Test Conditions
Datasheet
–
–
–
–
–