参数资料
型号: ICS1893AFLFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 36/136页
文件大小: 0K
描述: PHYCEIVER LOW PWR 3.3V 48-SSOP
标准包装: 1,000
系列: PHYceiver™
类型: PHY 收发器
规程: MII
电源电压: 3.14 V ~ 3.47 V
安装类型: 表面贴装
封装/外壳: 48-BSSOP(0.295",7.50mm 宽)
供应商设备封装: 48-SSOP
包装: 带卷 (TR)
其它名称: 1893AFLFT
ICS1893AF, Rev D 10/26/04
October, 2004
130
Chapter 10
DC and AC Operating Conditions
ICS1893AF Data Sheet - Release
Copyright 2004, Integrated Circuit Systems, Inc.
All rights reserved.
10.5.17
10Base-T: Heartbeat Timing (SQE)
Table 10-24 lists the significant time periods for the 10Base-T heartbeat (that is, the Signal Quality Error).
The time periods consist of timings of signals on the following pins:
TXEN
TXCLK
COL
Figure 10-18 shows the timing diagram for the time periods.
Note:
1.
For more information on 10Base-T SQE operations, see Section 7.5.10, “10Base-T Operation: SQE
2.
In 10Base-T mode, one bit time = 100 ns.
Figure 10-18.
10Base-T Heartbeat (SQE) Timing Diagram
Table 10-24.
10Base-T Heartbeat (SQE) Timing
Time
Period
Parameter
Conditions
Min.
Typ.
Max.
Units
t1
COL Heartbeat Assertion Delay from
TXEN De-Assertion
10Base-T Half Duplex
850
1500
ns
t2
COL Heartbeat Assertion Duration
10Base-T Half Duplex
1000
1500
ns
t2
t1
TXEN
TXCLK
COL
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