lxt972a Intel Corporation, lxt972a Datasheet - Page 51

• Manufacturer Part Number: lxt972a
• Description: 3.3v Dual-speed Fast Ethernet Transceiver Datasheet
• Manufacturer: Intel Corporation

Datasheet
Maximum transmit time
Unjab time
COL (SQE) Delay after TX_EN off
COL (SQE) Pulse duration
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
TX_EN
Figure 28. 10BASE-T Jabber and Unjabber Timing
Table 29. 10BASE-T Jabber and Unjabber Timing Parameters
Figure 29. 10BASE-T SQE (Heartbeat) Timing
Table 30. 10BASE-T SQE Timing Parameters
TX_CLK
COL
TXD
TX_EN
COL
Parameter
Parameter
3.3V Dual-Speed Fast Ethernet Transceiver Datasheet — LXT972A
Sym
t1
t2
t
1
Min
250
20
Sym
t1
t2
t
1
0.65
Min
0.5
Typ
–
–
1
Typ
–
–
1
Max
150
750
Max
t
1.6
1.5
2
Units
us
us
Units
ms
ms
t
2
Test Conditions
Test Conditions
–
–
–
–
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