ics1893cy-10 Integrated Device Technology, ics1893cy-10 Datasheet - Page 136

• Manufacturer Part Number: ics1893cy-10
• Description: 3.3-v 10base-t/100base-tx Integrated Phyceiver
• Manufacturer: Integrated Device Technology

9.5.19 10Base-T: Heartbeat Timing (SQE)
ICS1893CY-10 Rev 1/07
Table 9-26
The time periods consist of timings of signals on the following pins:
•
•
•
Figure 9-20
Note:
1. For more information on 10Base-T SQE operations, see
2. In 10Base-T mode, one bit time = 100 ns.
Table 9-26. 10Base-T Heartbeat (SQE) Timing
Figure 9-20. 10Base-T Heartbeat (SQE) Timing Diagram
TXEN
TXCLK
COL
Period
Time
TXEN
TXCLK
COL
ICS1893CY-10 - 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.
137
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
Units
ns
ns