參數(shù)資料
型號: DS21Q50N
英文描述: Telecommunication IC
中文描述: 通信集成電路
文件頁數(shù): 44/99頁
文件大?。?/td> 325K
代理商: DS21Q50N
DS21Q50
Page 44 of 99
9.2 CRC4 ERROR COUNTER
CRC4 Count Register 1 (CRCCR1) is the most significant word and CRCCR2 is the least significant word of a
16–bit counter that records word errors in the Cyclic Redundancy Check 4 (CRC4). Since the maximum CRC4
count in a one second period is 1000, this counter cannot saturate. The counter is disabled during loss of sync at
either the FAS or CRC4 level; it will continue to count if loss of multiframe sync occurs at the CAS level.
CRCCR1 and CRCCR2 have an alternate function.
Register Name:
CRCCR1, CRCCR2
Register Description:
CRC4 COUNT REGISTERS
Register Address:
02 Hex, 03 Hex
Bit #
7
6
5
4
3
SYM
CRC15
CRC14
CRC13
CRC12
CRC11
SYM
CRC7
CRC6
CRC5
CRC4
CRC/3
SYMBOL
BIT
NAME AND DESCRIPTION
CRC15
CRCCR1.7
MSB of the 16–Bit CRC4 error count
CRC0
CRCCR2.0
LSB of the 16–Bit CRC4 error count
2
CRC10
CRC2
1
0
CRC9
CRC1
CRC8
CRC0
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