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RM0432
4.4.3
Non-volatile data segment start address (FW_NVDSSA)
Address offset: 0x08
Reset value: 0x0000 0000
31
30
29
Res.
Res.
Res.
15
14
13
Bits 31:24 Reserved, must be kept at the reset value.
Bits 23:8 ADD[23:8]: Non-volatile data segment start address
Note: These bits can only be written before enabling the Firewall. Refer to
Bits 7:0 Reserved, must be kept at the reset value.
4.4.4
Non-volatile data segment length (FW_NVDSL)
Address offset: 0x0C
Reset value: 0x0000 0000
31
30
29
Res.
Res.
Res.
Res.
15
14
13
Bits 31:22 Reserved, must be kept at the reset value.
Bits 21:8 LENG[21:8]: Non-volatile data segment length
The segment area is defined from {ADD[23:8],0x00} to {ADD[23:8]+LENG[21:8], 0x00} - 0x01
Note: If LENG[21:8] = 0 after enabling the Firewall, this segment is not defined, thus not
Bits 7:0 Reserved, must be kept at the reset value.
28
27
26
25
Res.
Res.
Res.
Res.
12
11
10
9
ADD[15:8]
rw
The LSB bits of the start address (bit 7:0) are reserved and forced to 0 in order to allow a
256-byte granularity.
Firewall
initialization.
28
27
26
25
Res.
Res.
Res.
12
11
10
9
LENG[15:8]
rw
LENG[21:8] selects the size of the Non-volatile data segment expressed in bytes but is a
multiple of 256 bytes.
protected by the Firewall.
These bits can only be written before enabling the Firewall. Refer to
Firewall
initialization.
24
23
22
Res.
8
7
6
Res.
Res.
24
23
22
Res.
Res.
Res.
8
7
6
Res.
Res.
RM0432 Rev 6
21
20
19
18
ADD[23:16]
rw
5
4
3
2
Res.
Res.
Res.
Res.
Section 4.3.5:
21
20
19
18
LENG[21:16]
rw
5
4
3
2
Res.
Res.
Res.
Res.
Section 4.3.5:
Firewall (FW)
17
16
1
0
Res.
Res.
17
16
1
0
Res.
Res.
177/2301
181
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