![](http://datasheet.mmic.net.cn/230000/ICS1892_datasheet_15578829/ICS1892_143.png)
Chapter 10
DC and AC Operating Conditions
ICS1892, Rev. D, 2/26/01
February 26, 2001
143
ICS1892
2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
10.5.20
10Base-T: Normal Link Pulse Timing
Table 10-27
lists the significant time periods for the 10Base-T Normal Link Pulse (which consists of timings
of signals on the TP_TXP pin).
Figure 10-20
shows the timing diagram for the time periods.
Figure 10-20.
10Base-T Normal Link Pulse Timing Diagram
Table 10-27.
10Base-T Normal Link Pulse Timing
Time
Period
Parameter
Conditions
Min.
Typ.
Max.
Units
t1
Normal Link Pulse Width
10Base-T
–
100
–
ns
t2
COL Heartbeat (SQE) Assertion Duration 10Base-T Half Duplex
8
18
24
ms
TP_TXP
t1
t2