Table 90. Crc Register Map And Reset Values - ST STM32G4 Series Reference Manual

Cyclic redundancy check calculation unit (CRC)
Bits 31:0 CRC_INIT[31:0]: Programmable initial CRC value
This register is used to write the CRC initial value.
15.4.5 CRC polynomial (CRC_POL)
Address offset: 0x14
Reset value: 0x04C1 1DB7
31 30 29 28
rw rw rw rw
15 14 13 12
rw rw rw rw
Bits 31:0 POL[31:0]: Programmable polynomial
This register is used to write the coefficients of the polynomial to be used for CRC calculation.
If the polynomial size is less than 32 bits, the least significant bits have to be used to program the
correct value.
15.4.6 CRC register map
Register
Offset
name
CRC_DR
0x00
Reset value
1
CRC_IDR
0x04
Reset value
0
CRC_CR
0x08
Reset value
CRC_INIT
0x10
Reset value 1
CRC_POL
0x14
Reset value 0
Refer to
424/2083
27 26 25
rw rw rw
11 10 9
rw rw rw

Table 90. CRC register map and reset values

1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1
0 0 0 0 1 0 0 1
Section 2.2 on page 78
24 23 22
POL[31:16]
rw rw rw
8 7 6
POL[15:0]
rw rw rw
DR[31:0]
1 1 1 1 1 1 1 1 1
IDR[31:0]
0 0 0 0 0 0 0 0 0
CRC_INIT[31:0]
1 1 1 1 1 1 1 1 1
Polynomial coefficients
1 0 0 0 0 0 1 0 0
for the register boundary addresses.
RM0440 Rev 1
21 20 19 18
rw rw rw rw
5 4 3 2
rw rw rw rw
1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0
0 0
1 1 1 1 1 1 1 1
0 1 1 1 0 1 1 0
RM0440
17 16
rw rw
1 0
rw rw
1 1 1 1 1 1
0 0 0 0 0 0
0 0 0 0
1 1 1 1 1 1
1 1 0 1 1 1