參數(shù)資料
型號: 1894-40KLF
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: DATACOM, INTERFACE CIRCUIT, QCC40
封裝: 6 X 6 MM, ROHS COMPLIANT, QFN-40
文件頁數(shù): 41/52頁
文件大?。?/td> 459K
代理商: 1894-40KLF
ICS1894-40
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
PHYCEIVER
IDT / ICS 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE 46
ICS1894-40
REV C 092909
10Base-T: Heartbeat Timing (SQE)
The table below 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
The 10Base-T Heartbeat (SQE) Timing Diagram shows the timing diagram for the time periods.
Note:
1. For more information on 10Base-T SQE operations, see the section “10Base-T Operation: SQE Test”.
2. In 10Base-T mode, one bit time = 100 ns.
10Base-T Heartbeat (SQE) Timing Diagram
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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