參數(shù)資料
型號: PEF3065NV3.2
廠商: SIEMENS AG
元件分類: Codec
英文描述: Signal Processing Subscriber Line Interface Codec Filter SLICOF
中文描述: 信號處理用戶線路接口編解碼器SLICOF
文件頁數(shù): 39/102頁
文件大小: 563K
代理商: PEF3065NV3.2
PEB 3065
PEF 3065
Programming the SLICOFI
Semiconductor Group
39
01.98
TCR2 and TCR3 Configuration Registers 2 and 3
TCR2 and TCR3 are the checksum of all the Coefficient bytes written into the Coefficient
RAM (CRAM) of the SLICOFI by the COP-Command.
TCR2
TCR3
OKCS
shows, if the checksum is valid or the internal checksum calculation is
not yet finished
1)
OKCS = 0
checksum is not valid
OKCS = 1
checksum is valid
Algorithm of defining the checksum: x
16
x
10
x
7
x 1
With that algorithm you can reach a fault coverage of: (1 - 2
-15
)
1)
After each change of the CRAM contents (COP-write or COP-read) the checksum has to be recalculated.
During calculation time OKCS = 0.
Bit
7
6
5
LOW Byte of CRAM-checksum
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
OKCS
HIGH Byte of CRAM-checksum
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