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PM6341-QI 参数 Datasheet PDF下载

PM6341-QI图片预览
型号: PM6341-QI
PDF下载: 下载PDF文件 查看货源
内容描述: E1成帧器/收发器 [E1 FRAMER/TRANSCEIVER]
分类和应用: PC
文件页数/大小: 272 页 / 902 K
品牌: PMC [ PMC-SIERRA, INC ]
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PM6341 E1XC  
DATA SHEET  
PMC-910419  
ISSUE 8  
E1 FRAMER/TRANSCEIVER  
Register 27H: FRMR Maintenance/Alarm Status  
Bit  
Type  
Function  
Default  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
R
R
R
R
R
R
RRA  
RRMA  
AISD  
X
X
X
X
X
X
X
X
T16AISD  
RED  
AIS  
Unused  
Unused  
Reading this register returns the current state value of the RRA, RRMA, AISD,  
T16AISD, RED, and AIS maintenance/alarm statuses.  
RRA:  
The RRA bit is a logic one when the "A" bit (bit 3 in time slot 0 of the non-  
frame alignment signal frame) has been a logic one for 2 or 3 consecutive  
non-frame alignment signal frames, as determined by the RADEB bit.The  
RRA output is updated every two frames.  
RRMA:  
The RRMA bit is a logic one when the "Y" bit (bit 6 in time slot 16 in frame 0  
of the signalling multiframes) has been a logic one for 2 or 3 consecutive  
signalling multiframes, as determined by the RMADEB bit.. The RRMA bit is  
updated every 16 frames.  
AISD:  
The AISD bit is a logic one after an unframed pattern of all ones with less  
than 3 zeros in two consecutive frame times (512 bits) has been detected.  
The AISD bit is updated every 512 bit times.  
T16AISD:  
The T16AISD is a logic one after an all-ones byte has been detected in time  
slot 16 for 2 consecutive frames while out of signalling multiframe alignment.  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
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