参数资料
型号: WJLXT907ALCA4
厂商: CORTINA SYSTEMS INC
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: ROHS COMPLIANT, LQFP-64
文件页数: 6/48页
文件大小: 621K
代理商: WJLXT907ALCA4
Intel
LXT901A/907A Universal 3.3 V Ethernet Transceiver
14
Datasheet
Document Number: 249098
Revision Number: 003
Revision Date: 27-Nov-2005
2.2.2
SQE Function
In the integrated PLS/MAU mode, the LXT901A/907A Transceiver supports the signal quality
error (SQE) function as shown in Figure 5 on page 15, although the SQE function can be disabled
on the LXT907A Transceiver. After every successful transmission on the 10BASE-T network,
when SQE is enabled, the LXT901A/907A Transceiver transmits the SQE signal for 10 bit times ±
5 bit times over the internal CI circuit, which is indicated on the COL pin of the device. When
using the AUI of the LXT901A/907A Transceiver, the SQE function is determined by the external
MAU attached.
2.2.2.1
SQE Disable Function (LXT907A Transceiver only)
SQE must be disabled for normal operation in hub and switch applications. The
LXT907A Transceiver is configured with an SQE Disable function. The SQE function is disabled
when DSQE is set High, and enabled when DSQE is Low.
Figure 4. Jabber Control Function
No Output
Nonjabber Output
Start_XMIT_MAX_Timer
Power On
DO=Active
Jab
XMIT=Disable
LPBK=Disable
CI=SQE
Unjab Wait
Start_Unjab_Timer
XMIT=Disable
LPBK=Disable
CI=SQE
DO=Active
XMIT_Max_Timer_Done
DO=Idle
Unjab_ Timer_Done
DO=Active
Unjab_Timer_Not_Done
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