MWU — Memory watch unit

The Memory watch unit (MWU) can be used to generate events when a memory region is accessed by the CPU. The MWU can be configured to trigger events for access to Data RAM and Peripheral memory segments. The MWU allows an application developer to generate memory access events during development for debugging or during production execution for failure detection and recovery.

Listed here are the main features for MWU:

Six memory regions, four user-configurable and two fixed regions in peripheral address space
Flexible configuration of regions with START and END addresses
Generate events on CPU read and/or write to a defined region of Data RAM or peripheral memory address space
Programmable maskable or non-maskable (NMI) interrupt on events
Peripheral interfaces can be watched for read and write access using subregions of the two fixed memory regions

Table 1. Memory regions
Memory region	START address	END address
REGION[0..3]	Configurable	Configurable
PREGION[0]	0x40000000	0x4001FFFF
PREGION[1]	0x40020000	0x4003FFFF

Each MWU region is defined by a start address and an end address, configured by the START and END registers respectively. These addresses are byte aligned and inclusive. The END register value has to be greater or equal to the START register value. Each region is associated with a pair of events that indicate that either a write access or a read access from the CPU has been detected inside the region.

For regions containing subregions (see below), a set of status registers PERREGION[0..1].SUBSTATWA and PERREGION[0..1].SUBSTATRA indicate which subregion(s) caused the EVENT_PREGION[0..1].WA and EVENT_PREGION[0..1].RA respectively.

The MWU is only able to detect memory accesses in the Data RAM and Peripheral memory segments from the CPU, see Memory for more information about the different memory segments. EasyDMA accesses are not monitored by the MWU. The MWU requires two HCLK cycles to detect and generate the event.

The peripheral regions, PREGION[0...1], are divided into 32 equally sized subregions, SR[0...31]. All subregions are excluded in the main region by default, and any can be included by specifying them in the SUBS register. When a subregion is excluded from the main region, the memory watch mechanism will not trigger any events when that subregion is accessed.

Subregions in PREGION[0..1] cannot be individually configured for read or write access watch. Watch configuration is only possible for a region as a whole. The PRGNiRA and PRGNiWA (i=0..1) fields in the REGIONEN register control watching read and write access.

REGION[0..3] can be individually enabled for read and/or write access watching through their respective RGNiRA and RGNiWA (i=0..3) fields in the REGIONEN register.

REGIONENSET and REGIONENCLR allow respectively enabling and disabling one or multiple REGIONs or PREGIONs watching in a single write access.

Registers

Table 2. Instances
Base address	Peripheral	Instance	Description	Configuration
0x40020000	MWU	MWU	Memory Watch Unit

Table 3. Register Overview
Register	Offset	Description
EVENTS_REGION[0].WA	0x100	Write access to region 0 detected
EVENTS_REGION[0].RA	0x104	Read access to region 0 detected
EVENTS_REGION[1].WA	0x108	Write access to region 1 detected
EVENTS_REGION[1].RA	0x10C	Read access to region 1 detected
EVENTS_REGION[2].WA	0x110	Write access to region 2 detected
EVENTS_REGION[2].RA	0x114	Read access to region 2 detected
EVENTS_REGION[3].WA	0x118	Write access to region 3 detected
EVENTS_REGION[3].RA	0x11C	Read access to region 3 detected
EVENTS_PREGION[0].WA	0x160	Write access to peripheral region 0 detected
EVENTS_PREGION[0].RA	0x164	Read access to peripheral region 0 detected
EVENTS_PREGION[1].WA	0x168	Write access to peripheral region 1 detected
EVENTS_PREGION[1].RA	0x16C	Read access to peripheral region 1 detected
INTEN	0x300	Enable or disable interrupt
INTENSET	0x304	Enable interrupt
INTENCLR	0x308	Disable interrupt
NMIEN	0x320	Enable or disable non-maskable interrupt
NMIENSET	0x324	Enable non-maskable interrupt
NMIENCLR	0x328	Disable non-maskable interrupt
PERREGION[0].SUBSTATWA	0x400	Source of event/interrupt in region 0, write access detected while corresponding subregion was enabled for watching
PERREGION[0].SUBSTATRA	0x404	Source of event/interrupt in region 0, read access detected while corresponding subregion was enabled for watching
PERREGION[1].SUBSTATWA	0x408	Source of event/interrupt in region 1, write access detected while corresponding subregion was enabled for watching
PERREGION[1].SUBSTATRA	0x40C	Source of event/interrupt in region 1, read access detected while corresponding subregion was enabled for watching
REGIONEN	0x510	Enable/disable regions watch
REGIONENSET	0x514	Enable regions watch
REGIONENCLR	0x518	Disable regions watch
REGION[0].START	0x600	Start address for region 0
REGION[0].END	0x604	End address of region 0
REGION[1].START	0x610	Start address for region 1
REGION[1].END	0x614	End address of region 1
REGION[2].START	0x620	Start address for region 2
REGION[2].END	0x624	End address of region 2
REGION[3].START	0x630	Start address for region 3
REGION[3].END	0x634	End address of region 3
PREGION[0].START	0x6C0	Reserved for future use
PREGION[0].END	0x6C4	Reserved for future use
PREGION[0].SUBS	0x6C8	Subregions of region 0
PREGION[1].START	0x6D0	Reserved for future use
PREGION[1].END	0x6D4	Reserved for future use
PREGION[1].SUBS	0x6D8	Subregions of region 1

INTEN

Address offset: 0x300

Enable or disable interrupt

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Id								L	K	J	I																	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Id	RW	Field	Value Id	Value								Description
A	RW	REGION0WA										Enable or disable interrupt for REGION[0].WA event See EVENTS_REGION[0].WA
			Disabled	0								Disable
			Enabled	1								Enable
B	RW	REGION0RA										Enable or disable interrupt for REGION[0].RA event See EVENTS_REGION[0].RA
			Disabled	0								Disable
			Enabled	1								Enable
C	RW	REGION1WA										Enable or disable interrupt for REGION[1].WA event See EVENTS_REGION[1].WA
			Disabled	0								Disable
			Enabled	1								Enable
D	RW	REGION1RA										Enable or disable interrupt for REGION[1].RA event See EVENTS_REGION[1].RA
			Disabled	0								Disable
			Enabled	1								Enable
E	RW	REGION2WA										Enable or disable interrupt for REGION[2].WA event See EVENTS_REGION[2].WA
			Disabled	0								Disable
			Enabled	1								Enable
F	RW	REGION2RA										Enable or disable interrupt for REGION[2].RA event See EVENTS_REGION[2].RA
			Disabled	0								Disable
			Enabled	1								Enable
G	RW	REGION3WA										Enable or disable interrupt for REGION[3].WA event See EVENTS_REGION[3].WA
			Disabled	0								Disable
			Enabled	1								Enable
H	RW	REGION3RA										Enable or disable interrupt for REGION[3].RA event See EVENTS_REGION[3].RA
			Disabled	0								Disable
			Enabled	1								Enable
I	RW	PREGION0WA										Enable or disable interrupt for PREGION[0].WA event See EVENTS_PREGION[0].WA
			Disabled	0								Disable
			Enabled	1								Enable
J	RW	PREGION0RA										Enable or disable interrupt for PREGION[0].RA event See EVENTS_PREGION[0].RA
			Disabled	0								Disable
			Enabled	1								Enable
K	RW	PREGION1WA										Enable or disable interrupt for PREGION[1].WA event See EVENTS_PREGION[1].WA
			Disabled	0								Disable
			Enabled	1								Enable
L	RW	PREGION1RA										Enable or disable interrupt for PREGION[1].RA event See EVENTS_PREGION[1].RA
			Disabled	0								Disable
			Enabled	1								Enable

INTENSET

Address offset: 0x304

Enable interrupt

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Id								L	K	J	I																	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Id	RW	Field	Value Id	Value								Description
A	RW	REGION0WA										Write '1' to Enable interrupt for REGION[0].WA event See EVENTS_REGION[0].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
B	RW	REGION0RA										Write '1' to Enable interrupt for REGION[0].RA event See EVENTS_REGION[0].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
C	RW	REGION1WA										Write '1' to Enable interrupt for REGION[1].WA event See EVENTS_REGION[1].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
D	RW	REGION1RA										Write '1' to Enable interrupt for REGION[1].RA event See EVENTS_REGION[1].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
E	RW	REGION2WA										Write '1' to Enable interrupt for REGION[2].WA event See EVENTS_REGION[2].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
F	RW	REGION2RA										Write '1' to Enable interrupt for REGION[2].RA event See EVENTS_REGION[2].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
G	RW	REGION3WA										Write '1' to Enable interrupt for REGION[3].WA event See EVENTS_REGION[3].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
H	RW	REGION3RA										Write '1' to Enable interrupt for REGION[3].RA event See EVENTS_REGION[3].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
I	RW	PREGION0WA										Write '1' to Enable interrupt for PREGION[0].WA event See EVENTS_PREGION[0].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
J	RW	PREGION0RA										Write '1' to Enable interrupt for PREGION[0].RA event See EVENTS_PREGION[0].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
K	RW	PREGION1WA										Write '1' to Enable interrupt for PREGION[1].WA event See EVENTS_PREGION[1].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
L	RW	PREGION1RA										Write '1' to Enable interrupt for PREGION[1].RA event See EVENTS_PREGION[1].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled

INTENCLR

Address offset: 0x308

Disable interrupt

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Id								L	K	J	I																	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Id	RW	Field	Value Id	Value								Description
A	RW	REGION0WA										Write '1' to Disable interrupt for REGION[0].WA event See EVENTS_REGION[0].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
B	RW	REGION0RA										Write '1' to Disable interrupt for REGION[0].RA event See EVENTS_REGION[0].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
C	RW	REGION1WA										Write '1' to Disable interrupt for REGION[1].WA event See EVENTS_REGION[1].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
D	RW	REGION1RA										Write '1' to Disable interrupt for REGION[1].RA event See EVENTS_REGION[1].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
E	RW	REGION2WA										Write '1' to Disable interrupt for REGION[2].WA event See EVENTS_REGION[2].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
F	RW	REGION2RA										Write '1' to Disable interrupt for REGION[2].RA event See EVENTS_REGION[2].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
G	RW	REGION3WA										Write '1' to Disable interrupt for REGION[3].WA event See EVENTS_REGION[3].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
H	RW	REGION3RA										Write '1' to Disable interrupt for REGION[3].RA event See EVENTS_REGION[3].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
I	RW	PREGION0WA										Write '1' to Disable interrupt for PREGION[0].WA event See EVENTS_PREGION[0].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
J	RW	PREGION0RA										Write '1' to Disable interrupt for PREGION[0].RA event See EVENTS_PREGION[0].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
K	RW	PREGION1WA										Write '1' to Disable interrupt for PREGION[1].WA event See EVENTS_PREGION[1].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
L	RW	PREGION1RA										Write '1' to Disable interrupt for PREGION[1].RA event See EVENTS_PREGION[1].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled

NMIEN

Address offset: 0x320

Enable or disable non-maskable interrupt

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Id								L	K	J	I																	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Id	RW	Field	Value Id	Value								Description
A	RW	REGION0WA										Enable or disable non-maskable interrupt for REGION[0].WA event See EVENTS_REGION[0].WA
			Disabled	0								Disable
			Enabled	1								Enable
B	RW	REGION0RA										Enable or disable non-maskable interrupt for REGION[0].RA event See EVENTS_REGION[0].RA
			Disabled	0								Disable
			Enabled	1								Enable
C	RW	REGION1WA										Enable or disable non-maskable interrupt for REGION[1].WA event See EVENTS_REGION[1].WA
			Disabled	0								Disable
			Enabled	1								Enable
D	RW	REGION1RA										Enable or disable non-maskable interrupt for REGION[1].RA event See EVENTS_REGION[1].RA
			Disabled	0								Disable
			Enabled	1								Enable
E	RW	REGION2WA										Enable or disable non-maskable interrupt for REGION[2].WA event See EVENTS_REGION[2].WA
			Disabled	0								Disable
			Enabled	1								Enable
F	RW	REGION2RA										Enable or disable non-maskable interrupt for REGION[2].RA event See EVENTS_REGION[2].RA
			Disabled	0								Disable
			Enabled	1								Enable
G	RW	REGION3WA										Enable or disable non-maskable interrupt for REGION[3].WA event See EVENTS_REGION[3].WA
			Disabled	0								Disable
			Enabled	1								Enable
H	RW	REGION3RA										Enable or disable non-maskable interrupt for REGION[3].RA event See EVENTS_REGION[3].RA
			Disabled	0								Disable
			Enabled	1								Enable
I	RW	PREGION0WA										Enable or disable non-maskable interrupt for PREGION[0].WA event See EVENTS_PREGION[0].WA
			Disabled	0								Disable
			Enabled	1								Enable
J	RW	PREGION0RA										Enable or disable non-maskable interrupt for PREGION[0].RA event See EVENTS_PREGION[0].RA
			Disabled	0								Disable
			Enabled	1								Enable
K	RW	PREGION1WA										Enable or disable non-maskable interrupt for PREGION[1].WA event See EVENTS_PREGION[1].WA
			Disabled	0								Disable
			Enabled	1								Enable
L	RW	PREGION1RA										Enable or disable non-maskable interrupt for PREGION[1].RA event See EVENTS_PREGION[1].RA
			Disabled	0								Disable
			Enabled	1								Enable

NMIENSET

Address offset: 0x324

Enable non-maskable interrupt

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Id								L	K	J	I																	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Id	RW	Field	Value Id	Value								Description
A	RW	REGION0WA										Write '1' to Enable non-maskable interrupt for REGION[0].WA event See EVENTS_REGION[0].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
B	RW	REGION0RA										Write '1' to Enable non-maskable interrupt for REGION[0].RA event See EVENTS_REGION[0].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
C	RW	REGION1WA										Write '1' to Enable non-maskable interrupt for REGION[1].WA event See EVENTS_REGION[1].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
D	RW	REGION1RA										Write '1' to Enable non-maskable interrupt for REGION[1].RA event See EVENTS_REGION[1].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
E	RW	REGION2WA										Write '1' to Enable non-maskable interrupt for REGION[2].WA event See EVENTS_REGION[2].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
F	RW	REGION2RA										Write '1' to Enable non-maskable interrupt for REGION[2].RA event See EVENTS_REGION[2].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
G	RW	REGION3WA										Write '1' to Enable non-maskable interrupt for REGION[3].WA event See EVENTS_REGION[3].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
H	RW	REGION3RA										Write '1' to Enable non-maskable interrupt for REGION[3].RA event See EVENTS_REGION[3].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
I	RW	PREGION0WA										Write '1' to Enable non-maskable interrupt for PREGION[0].WA event See EVENTS_PREGION[0].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
J	RW	PREGION0RA										Write '1' to Enable non-maskable interrupt for PREGION[0].RA event See EVENTS_PREGION[0].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
K	RW	PREGION1WA										Write '1' to Enable non-maskable interrupt for PREGION[1].WA event See EVENTS_PREGION[1].WA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
L	RW	PREGION1RA										Write '1' to Enable non-maskable interrupt for PREGION[1].RA event See EVENTS_PREGION[1].RA
			Set	1								Enable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled

NMIENCLR

Address offset: 0x328

Disable non-maskable interrupt

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Id								L	K	J	I																	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Id	RW	Field	Value Id	Value								Description
A	RW	REGION0WA										Write '1' to Disable non-maskable interrupt for REGION[0].WA event See EVENTS_REGION[0].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
B	RW	REGION0RA										Write '1' to Disable non-maskable interrupt for REGION[0].RA event See EVENTS_REGION[0].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
C	RW	REGION1WA										Write '1' to Disable non-maskable interrupt for REGION[1].WA event See EVENTS_REGION[1].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
D	RW	REGION1RA										Write '1' to Disable non-maskable interrupt for REGION[1].RA event See EVENTS_REGION[1].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
E	RW	REGION2WA										Write '1' to Disable non-maskable interrupt for REGION[2].WA event See EVENTS_REGION[2].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
F	RW	REGION2RA										Write '1' to Disable non-maskable interrupt for REGION[2].RA event See EVENTS_REGION[2].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
G	RW	REGION3WA										Write '1' to Disable non-maskable interrupt for REGION[3].WA event See EVENTS_REGION[3].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
H	RW	REGION3RA										Write '1' to Disable non-maskable interrupt for REGION[3].RA event See EVENTS_REGION[3].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
I	RW	PREGION0WA										Write '1' to Disable non-maskable interrupt for PREGION[0].WA event See EVENTS_PREGION[0].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
J	RW	PREGION0RA										Write '1' to Disable non-maskable interrupt for PREGION[0].RA event See EVENTS_PREGION[0].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
K	RW	PREGION1WA										Write '1' to Disable non-maskable interrupt for PREGION[1].WA event See EVENTS_PREGION[1].WA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled
L	RW	PREGION1RA										Write '1' to Disable non-maskable interrupt for PREGION[1].RA event See EVENTS_PREGION[1].RA
			Clear	1								Disable
			Disabled	0								Read: Disabled
			Enabled	1								Read: Enabled

PERREGION[0].SUBSTATWA

Address offset: 0x400

Source of event/interrupt in region 0, write access detected while corresponding subregion was enabled for watching

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Id				f	e	d	c	b	a	Z	Y	X	W	V	U	T	S	R	Q	P	O	N	M	L	K	J	I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Id	RW	Field	Value Id	Value								Description
A	RW	SR0										Subregion 0 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
B	RW	SR1										Subregion 1 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
C	RW	SR2										Subregion 2 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
D	RW	SR3										Subregion 3 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
E	RW	SR4										Subregion 4 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
F	RW	SR5										Subregion 5 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
G	RW	SR6										Subregion 6 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
H	RW	SR7										Subregion 7 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
I	RW	SR8										Subregion 8 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
J	RW	SR9										Subregion 9 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
K	RW	SR10										Subregion 10 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
L	RW	SR11										Subregion 11 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
M	RW	SR12										Subregion 12 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
N	RW	SR13										Subregion 13 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
O	RW	SR14										Subregion 14 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
P	RW	SR15										Subregion 15 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
Q	RW	SR16										Subregion 16 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
R	RW	SR17										Subregion 17 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
S	RW	SR18										Subregion 18 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
T	RW	SR19										Subregion 19 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
U	RW	SR20										Subregion 20 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
V	RW	SR21										Subregion 21 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
W	RW	SR22										Subregion 22 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
X	RW	SR23										Subregion 23 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
Y	RW	SR24										Subregion 24 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
Z	RW	SR25										Subregion 25 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
a	RW	SR26										Subregion 26 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
b	RW	SR27										Subregion 27 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
c	RW	SR28										Subregion 28 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
d	RW	SR29										Subregion 29 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
e	RW	SR30										Subregion 30 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion
f	RW	SR31										Subregion 31 in region 0 (write '1' to clear)
			NoAccess	0								No write access occurred in this subregion
			Access	1								Write access(es) occurred in this subregion

PERREGION[0].SUBSTATRA

Address offset: 0x404

Source of event/interrupt in region 0, read access detected while corresponding subregion was enabled for watching

Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8