33.6.27 Write Protection Control Register

Table 33-51. Register Bit Attribute Legend
Symbol	Description	Symbol	Description	Symbol	Description
R	Readable bit	HC	Cleared by Hardware	(Grey cell)	Unimplemented
W	Writable bit	HS	Set by Hardware	X	Bit is unknown at Reset
K	Write to clear	S	Software settable bit	—	—

Name:	WPCTRL
Offset:	0x70
Reset:	0x00000000
Property:	R/W


Bit	31	30	29	28	27	26	25	24
	WPKEY[23:16]
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
	WPKEY[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	15	14	13	12	11	10	9	8
	WPKEY[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	0


Bit	7	6	5	4	3	2	1	0
					WPFFLTEN	WPCRCEN	WPLCK	WPEN
Access					R/W	R/W	R/S	R/W
Reset					0	0	0	0

Bits 31:8 – WPKEY[23:0]

Writing a value other than 24'h706782 to this field cancels the write operation this register and generates a client bus error. This field always returns 0 on read.

Bit 3 – WPFFLTEN

Value	Name	Description
1	ENABLE	FFLT Register write protection enabled. Non-debugger writes to FLT registers marked with write protect property are canceled and generate a client bus error.
0	DISABLE	FFLT Register write protection disabled.

Bit 2 – WPCRCEN Write Protection Enable for CRC Registers

Value	Name	Description
1	ENABLE	CRC Register write protection enabled. Non-debugger writes to CRC registers marked with write protect property are canceled and generate a client bus error.
0	DISABLE	CRC Register write protection disabled.

Bit 1 – WPLCK Write Lock

Value	Name	Description
1	LOCKED	WPCTRL register is write protected. This bit can only be cleared by a hardware reset.
0	UNLOCKED	WPCTRL is not write protected.

Bit 0 – WPEN

Note: Write Protection also applies to HSM accesses for this module.

Value	Name	Description
1	ENABLE	Register write protection enabled (for registers not associated with a WP<feature>EN bit). Non-debugger writes to registers marked with write protect property are canceled and generate a client bus error.
0	DISABLE	Register write protection disabled.

DS60001921A

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