60.7.12 SECUMOD Dynamic Signatures Tuning Register

It is recommended to disable the protection on dynamic intrusions before modifying this register.

Name:	SECUMOD_DYSTUNE
Offset:	0x0074
Reset:	0x00010501
Property:	Read/Write


Bit	31	30	29	28	27	26	25	24
	PERIOD[15:8]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	23	22	21	20	19	18	17	16
	PERIOD[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	1


Bit	15	14	13	12	11	10	9	8
	RX_OK_CORREL_NUMBER[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	1	0	1


Bit	7	6	5	4	3	2	1	0
	NOPA	RX_ERROR_THRESHOLD[6:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	1

Bits 31:16 – PERIOD[15:0] Signature Clock Period

This 32-bit field contains the dividing ratio applied on ICLK to build the signature clock:

t_SIGCLK =(8*PERIOD) * t_ICLK.

Writing 0 has no effect: 1 ≤ PERIOD ≤ 65535

Note: Patterns generated by dynamic signatures have a mean length of 4 cycles of the signature clock.

Bits 15:8 – RX_OK_CORREL_NUMBER[7:0] Error Counter Reset Threshold

This 16-bit field contains the number of consecutive matching patterns which must be received to consider that the external signature carrier is safe (again), and to forget any ongoing dynamic intrusion.

Writing values lower than 0x5 has no effect: 5 ≤ RX_OK_CORREL_NUMBER ≤ 255

Bit 7 – NOPA No Periodic Alarm

Value	Description
0	The alarm is regenerated periodically while intrusion is maintained.
1	The alarm is not regenerated periodically while intrusion is maintained.

Bits 6:0 – RX_ERROR_THRESHOLD[6:0] Error Detection Threshold

This 7-bit field contains the number of mismatching patterns which must be received to trigger an alarm.

Writing 0 has no effect: 1 ≤ RX_ERROR_THRESHOLD ≤ 127