參數(shù)資料
型號: MC145572AFN
廠商: Freescale Semiconductor
文件頁數(shù): 40/52頁
文件大?。?/td> 0K
描述: IC TRANSCEIVER ISDN 44-PLCC
標(biāo)準(zhǔn)包裝: 26
類型: 收發(fā)器
規(guī)程: RS232
電源電壓: 5V
安裝類型: 表面貼裝
封裝/外殼: 44-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 44-PLCC(17.525x17.525)
包裝: 管件
MC145572EVK
46
MC145572EVK after invoking any of the LPU commands. Each U-Interface Transceiver can be
independently put into analog loop-back.
The echo canceller loop-back is an external analog loop-back where data received on the U-Interface
Transceiver IDL Rx pin is framed up and then transmitted as 2B1Q symbols. The 2B1Q symbols are
received by the U-Interface Transceiver and cancelled by the echo canceller. Only the echo cancellers are
enabled during this mode. When the U-Interface Transceiver is operating correctly, BR12+BR13 should
have a low value. Preferably, BR12 should be 00 and BR13 should be a low value. BR13 will continue to
uctuate in value slightly. BR11 should read as 10 or 11. Several seconds may elapse before the registers
reach a steady state and the correct bits are set.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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