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FUJITSU MB91460 SERIES FR60 User Manual

Page 1030

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1014

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

4.1

Clock Monitor Configuration

Register (Page No.943)

.

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))

(See “

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