65.6.2 SECUMOD System Status Register

Name:	SECUMOD_SYSR
Offset:	0x0004
Reset:	0x000000D4
Property:	Read/Write


Bit	31	30	29	28	27	26	25	24

Access
Reset


Bit	23	22	21	20	19	18	17	16

Access
Reset


Bit	15	14	13	12	11	10	9	8

Access
Reset


Bit	7	6	5	4	3	2	1	0
	SCRAMB	AUTOBKP			SWKUP	BACKUP	ERASE_ON	ERASE_DONE
Access	R	R			R	R	R	R/W
Reset	1	1			0	1	0	0

Bit 7 – SCRAMB Scrambling Enabled

Value	Description
0	Disabled.
1	Enabled.

Bit 6 – AUTOBKP Automatic Backup Mode Enabled

Value	Description
0	Disabled.
1	Enabled.

Bit 3 – SWKUP SWKUP State

Value	Description
0	No SWKUP signal sent since the last clear.
1	SWKUP signal has been sent since the last clear.

Bit 2 – BACKUP Backup Mode

Value	Description
0	Normal mode active.
1	Backup mode active.

Bit 1 – ERASE_ON Erase Process Ongoing

When ERASE_ON returns to 0, ERASE_DONE is set after half a period of ICLK.


ERASE_ON	ERASE_DONE	Status	Action
0	0	No Erase ongoing or since the last Erase.	Nothing.
1	0	An Erase process is running.	Wait until the ERASE_ON flag is reset. ERASE_DONE will rise, see line below.
0	1	An Erase occurred and is finished.	Clear the ERASE_DONE flag.
1	1	An Erase process is running. The ERASE_DONE flag refers to a previous Erase process, but was not cleared.	Wait until the ERASE_ON flag is reset, then clear the ERASE_DONE flag.

Value	Description
0	Erase logic is not running.
1	Erase logic is currently running, memories are not accessible.

Bit 0 – ERASE_DONE Erasable Memories State

Value	Description
0	Secure memories content has not been erased since the last clear.
1	Secure memories content has been erased since the last clear. The user must write 1 into this bit to clear this flag. Note that not clearing this flag does not prevent the next erase processes. This flag also activates the SECURAM interrupt line as long as it is not cleared.