ICS1892 Datasheet, PDF (143/148 Pages) Integrated Circuit Systems – 10Base-T/100Base-TX Integrated PHYceiver

ICS1892
Chapter 10 DC and AC Operating Conditions
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.
Table 10-27. 10Base-T Normal Link Pulse Timing
Time
Period
Parameter
Conditions
Min.
t1 Normal Link Pulse Width
10Base-T
–
t2 COL Heartbeat (SQE) Assertion Duration 10Base-T Half Duplex 8
Typ.
100
18
Max. Units
– ns
24 ms
Figure 10-20. 10Base-T Normal Link Pulse Timing Diagram
TP_TXP
t1
t2
ICS1892, Rev. D, 2/26/01
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
143
February 26, 2001