參數(shù)資料
型號: PSB21911
廠商: SIEMENS A G
元件分類: 數(shù)字傳輸電路
英文描述: ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE
中文描述: DATACOM, ISDN ECHO CANCELLER
文件頁數(shù): 36/164頁
文件大?。?/td> 1401K
代理商: PSB21911
PSB 21911
PSF 21911
IOM-2 Interface
Semiconductor Group
36
11.97
Monitor Procedure ’Timeout’
The U-transceiver offers an automatic reset (Monitor procedure “Timeout”) for the
Monitor routine. This reset function transfers the Monitor channel into the idle state (MR
and MX set to high) by issuing “EOM” (End of Message) after a timer has elapsed. As
an effect, unacknowledged Monitor messages sent by the U-transceiver are taken away
from the Monitor channel.
The U-transceiver checks for unacknowledged Monitor messages every 5 ms. In case
the timer expires “EOM” will be issued. The U-transceiver does not repeat the message,
hence it will be lost.
In slow applications e.g. testing or evalution platforms this internal reset function may be
disabled by setting
– Pin MTO in stand-alone mode
– Bit ADF2:MTO in μP mode.
If Monitor Timeout is disabled, no restrictions regarding the time for completing a Monitor
transfer exists.
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