ICS1893CK ICST [Integrated Circuit Systems], ICS1893CK Datasheet - Page 119
ICS1893CK
Manufacturer Part Number
ICS1893CK
Description
3.3-V 10Base-T/100Base-TX Integrated PHYceive
Manufacturer
ICST [Integrated Circuit Systems]
Datasheet
1.ICS1893CK.pdf
(126 pages)
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9.5.17 10Base-T: Heartbeat Timing (SQE)
ICS1893CF, Rev. F, 03/01/07
Table 9-24
The time periods consist of timings of signals on the following pins:
•
•
•
Figure 9-18
Note:
1. For more information on 10Base-T SQE operations, see
2. In 10Base-T mode, one bit time = 100 ns.
Table 9-24. 10Base-T Heartbeat (SQE) Timing
Figure 9-18. 10Base-T Heartbeat (SQE) Timing Diagram
TXEN
TXCLK
COL
Period
Time
TXEN
TXCLK
COL
ICS1893CF Data Sheet Rev. F - Release
t1
t2
Test”.
COL Heartbeat Assertion Delay from
TXEN De-Assertion
COL Heartbeat Assertion Duration
lists the significant time periods for the 10Base-T heartbeat (that is, the Signal Quality Error).
shows the timing diagram for the time periods.
Parameter
Copyright © 2007, Integrated Device Technology, Inc.
t1
All rights reserved.
119
10Base-T Half Duplex
10Base-T Half Duplex
Conditions
Section 6.5.10, “10Base-T Operation: SQE
t2
Chapter 9 DC and AC Operating Conditions
Min.
–
–
1000
Typ.
850
Max.
1500
1500
Mar. 2007
Units
ns
ns
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