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CRC calculation unit
RM0008
3.4.2
Independent data register (CRC_IDR)
Address offset: 0x04
Reset value: 0x0000 0000
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
IDR[7:0]
Reserved
rw
rw
rw
rw
rw
rw
rw
rw
Bits 31:8
Reserved
Bits 7:0 General-purpose 8-bit data register bits
Can be used as a temporary storage location for one byte.
This register is not affected by CRC resets generated by the RESET bit in the CRC_CR
register.
3.4.3
Control register (CRC_CR)
Address offset: 0x08
Reset value: 0x0000 0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET
Reserved
w
Bits 31:1
Bit 0
Reserved
RESET bit
Resets the CRC calculation unit and sets the data register to FFFF FFFFh.
This bit can only be set, it is automatically cleared by hardware.
3.4.4
CRC register map
The following table provides the CRC register map and reset values.
Table 7.
CRC calculation unit register map and reset values
Offset
Register
31-24
23-16
15-8
7
6
5
4
3
2
1
0
0x00
CRC_DR
Reset value
Data register
0xFFFF FFFF
0x04
CRC_IDR
Reset value
Reserved
Independent data register
0x00
0x08
CRC_CR
Reset value
Reserved
Reserved
0
RESET
0
52/995
Doc ID 13902 Rev 9
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