STMicroelectronics RM0365 Reference Manual page 954

RM0365
Bits 15:0 CRCPOLY[15:0]: CRC polynomial register
This register contains the polynomial for the CRC calculation.
The CRC polynomial (0007h) is the reset value of this register. Another polynomial can be
configured as required.
Note: The polynomial value should be odd only. No even value is supported.
Serial peripheral interface / inter-IC sound (SPI/I2S)
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