Cyclic redundancy check calculation unit (CRC) RM0440
466/2126 RM0440 Rev 4
16.4.5 CRC polynomial (CRC_POL)
Address offset: 0x14
Reset value: 0x04C1 1DB7
16.4.6 CRC register map
Refer to Section 2.2 on page 80 for the register boundary addresses.
Bits 31:0 CRC_INIT[31:0]: Programmable initial CRC value
This register is used to write the CRC initial value.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
POL[31:16]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
POL[15:0]
rw rw rw rw rw rw rw rw rw rw rw rw 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.
Table 101. CRC register map and reset values
Offset
Register
name
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x00
CRC_DR DR[31:0]
Reset value
11111111111111111111111111111111
0x04
CRC_IDR IDR[31:0]
Reset value
00000000000000000000000000000000
0x08
CRC_CR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
REV_OUT
REV_IN[1:0]
POLYSIZE[1:0]
Res.
Res.
RESET
Reset value 00000 0
0x10
CRC_INIT CRC_INIT[31:0]
Reset value 11111111111111111111111111111111
0x14
CRC_POL POL[31:0]
Reset value 00000100110000010001110110110111
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