15 CRC16 /LFSR16/LFSR32
109
CW6632B Bluetooth 3.0 Audio Player SOC
Version 1.0.0
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Register 15-2 CRCFIFO
– CRC FIFO control
Position
7
6
5
4
3
2
1
0
Name
CRCFIFO
Default
x
x
x
x
x
x
x
x
Access
WO
WO
WO
WO
WO
WO
WO
WO
Write this location will load the data to CRC module;
Register 15-3 CRCRES0
– CRC result 0 control
Position
7
6
5
4
3
2
1
0
Name
CRCRES0
Default
x
x
x
x
x
x
x
x
Access
RO
RO
RO
RO
RO
RO
RO
RO
Register 15-4CRCRES1
– CRC result 1 control
Position
7
6
5
4
3
2
1
0
Name
CRCRES1
Default
x
x
x
x
x
x
x
x
Access
RO
RO
RO
RO
RO
RO
RO
RO
15.2
LFSR16
15.2.1
Features
Software can control lfsr16, or enable CRCEN of SPI1CON1 [1], hardware can auto trigger lfsr16 when spi1 receive
data.
The LFSR16 polynomial is defined as:
LFSR6(x) = X^16 + X^15 + X^14 + X^12 + X^8 + X + 1
15.2.2
LFSR16 Special Function Register
Register 15-5 LFSR16_DAT0
– LFSR16 data 0
Position
7
6
5
4
3
2
1
0
Name
LFSR16_DAT0
Default
1
1
1
1
1
1
1
1
Access
W/R
W/R
W/R
W/R
W/R
W/R
W/R
W/R
Note
: To initial the LFSR16 register, user need to write this register 2 times to LFSR16 register for LFSR16 (High
byte first).Reading will output LFSR16 data0
Register 15-6 LFSR16_DAT1
– LFSR16 data 1
Position
7
6
5
4
3
2
1
0
Name
LFSR16_DAT1
Default
1
1
1
1
1
1
1
1
