FUJITSU MB91460 SERIES FR60 User Manual
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Chapter 55 Flash Security
4.Register
Remark: The Flash Security Vector Re-Fetch sequence is especially intented to be used after a chip erase
command to update the security status without the need of applying an external INITX reset or after changing
the status of the FSV1 security vector.
Remark: For both Security Vector Re-Fetch and CRC32 it is not recommended to start these sequences from
programs located in the Flash Memory itself.
Remark: Before starting the CRC32 checksum it is recommended to set the RC oscillation in the 2MHz
operation mode to avoid long runtimes. See the RCSEL bit in Chapter
• Bit31-0: CRC32 checksum result
This register contains the CRC32 checksum result after completion of the CRC32 checksum sequence (the
sequence completion is indicated by FSCR1.RDY). The CRC checksum is calculated in a standard CRC32/
AAL5 algorithm with the polygon x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.
■
FSCR1: Address 7104h (Access: Byte (read), Word (write))
Meaning of Bit Attribute Symbols (Page No.10)
” for details of the attributes.)
CRC31-CRC0
Function
CRC32 Checksum (read only)
31
30
29
28
27
26
25
24
bit
-
-
-
-
-
-
-
RDY
0
0
0
0
0
0
0
0
Initial value (
INIT pin input,
watchdog reset
)
X
X
X
X
X
X
X
X
Initial value
(Software reset)
R0/WX
R0/WX
R0/WX
R0/WX
R0/WX
R0/WX
R0/WX
R
Attribute
23
22
21
20
19
18
17
16
bit
-
-
-
-
CSZ3
CSZ2
CSZ1
CSZ0
0
0
0
0
0
0
0
0
Initial value (
INIT pin input,
watchdog reset
)
X
X
X
X
X
X
X
X
Initial value
(Software reset)
R0/WX
R0/WX
R0/WX
R0/WX
R/W
R/W
R/W
R/W
Attribute
15
14
13
12
11
10
9
8
bit
CSA15
CSA14
CSA13
CSA12
CSA11
CSA10
CSA9
CSA8
0
0
0
0
0
0
0
0
Initial value (
INIT pin input,
watchdog reset
)
X
X
X
X
X
X
X
X
Initial value
(Software reset)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Attribute
7
6
5
4
3
2
1
0
bit
CSA7
CSA6
CSA5
CSA4
CSA3
CSA2
CSA1
CSA0
0
0
0
0
0
0
0
0
Initial value (
INIT pin input,
watchdog reset
)
X
X
X
X
X
X
X
X
Initial value
(Software reset)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Attribute