IDT1893CFLF IDT, Integrated Device Technology Inc, IDT1893CFLF Datasheet - Page 119
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IDT1893CFLF
Manufacturer Part Number
IDT1893CFLF
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.IDT1893CFLF.pdf
(127 pages)
Specifications of IDT1893CFLF
Lead Free Status / RoHS Status
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9.5.17 10Base-T: Heartbeat Timing (SQE)
ICS1893CF, Rev. J, 08/11/09
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
t1
t2
Test”.
ICS1893CF Data Sheet Rev. J - Release
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 © 2009, 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
August, 2009
Units
ns
ns
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