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DS2154LA2+ 参数 Datasheet PDF下载

DS2154LA2+图片预览
型号: DS2154LA2+
PDF下载: 下载PDF文件 查看货源
内容描述: [DATACOM, FRAMER, PQFP100, 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-100]
分类和应用: 电信电信集成电路
文件页数/大小: 90 页 / 1731 K
品牌: ROCHESTER [ Rochester Electronics ]
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DS2154  
6.4 FAS Error Counter  
FAS Count Register 1 (FASCR1) is the most significant word and FASCR2 is the least significant word  
of a 12-bit counter that records word errors in the Frame Alignment Signal in time slot 0. This counter is  
disabled during loss of synchronization conditions, (RLOS = 1). Since the maximum FAS word error  
count in a 1-second period is 4000, this counter cannot saturate.  
FASCR1: FAS BIT COUNT REGISTER 1 (Address = 02 Hex)  
FASCR2: FAS BIT COUNT REGISTER 2 (Address = 04 Hex)  
(MSB)  
(LSB)  
FAS11  
FAS10  
FAS4  
FAS9  
FAS3  
FAS8  
FAS2  
FAS7  
FAS1  
FAS6  
FAS0  
(Note 1) (Note 1) FASCR1  
FAS5  
(Note 2) (Note 2) FASCR2  
SYMBOL  
POSITION  
NAME AND DESCRIPTION  
FAS11  
FASCR1.7  
MSB of the 12-bit FAS error count.  
FAS0  
FASCR2.2  
LSB of the 12-bit FAS error count.  
Note 1: The lower 2 bits of FASCR1 at address 02 are the most significant bits of the 10-bit CRC4 error counter.  
Note 2: The lower 2 bits of FASCR2 at address 04 are the most significant bits of the 10-bit E-bit counter.  
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