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AN3959 데이터시트(PDF) 46 Page - STMicroelectronics

부품명 AN3959
상세설명  The purpose of this application note is to describe
PDF  65 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3959 데이터시트(HTML) 46 Page - STMicroelectronics

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Software setup to use the STA381BW/STA381BWS devices (ST Map)
AN3959
46/65
Doc ID 022081 Rev 3
7.3.3
STCompressorTM CRC computation
●
Download into RAM the STC band splitter filter coefficients into the RAM (address
0x40-0x53)
●
The XOR function calculates bit-to-bit the downloaded coefficients
●
Write into RAM the expected value (address 0x72 – CRC expected)
●
Enable the NP_CRC_GO bit (bit D0 register 0x5A). The checksum XOR of the band
splitter filter coefficients will be exposed in RAM on the computed CRC (address 0x73)
●
It is possible to see the CRC result in register 0x5A bit D2 (NP_CRCRES)
–
NP_CRCRES = 0, CRC STCompressor OK
–
NP_CRCRES = 1, CRC STCompressor with error



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