參數(shù)資料
型號: DS3160
元件分類: 通信及網(wǎng)絡
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 47/107頁
文件大?。?/td> 592K
代理商: DS3160
DS3160
47 of 107
Bit 10/CRC-5 Framing Mode (CRC5FM).
When set, this bit enables an alternate framing algorithm that
uses the CRC-5 check bits to validate framing in addition to the FAS bits. This reduces the chances of
falsely framing to an emulator pattern in the frame. This algorithm declares frame synchronization after
two or more of the first four FAS valid frames have correct CRC-5 check bits. If these criteria are not
met, reframe is initiated at the FAS level. If CRC5FM is set to 0, the framing algorithm only searches for
three consecutive multiframes with correct FAS patterns to declare frame synchronization.
0 = disable CRC qualified framing
1 = enable CRC qualified framing
Bit 14/Reframe (REFRM).
The reframe bit forces the DS3160’s receiver to begin searching for a new
frame alignment. If the new frame alignment matches the previous alignment, there is no disruption in
data or movement of the data-enable and start-of-frame signals. A 0-to-1 transition triggers the reframing.
Bit 15/Auto Reframe (AREFRM).
Setting the auto-reframe bit to a 0 allows the DS3160 to begin
searching for new frame alignment when an LOF has been declared.
0 = enable automatic reframe
1 = disable automatic reframe
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