CTI - Cross Trigger Interface

Configuration interface for the Cross Trigger Interface

Please refer to the CTI section for more information about how to configure the Cross Trigger Interface.

Registers

Table 1. Instances
Base address	Domain	Peripheral	Instance	Secure mapping	DMA security	Description	Configuration
0xE0042000	APPLICATION	CTI	CTI	S	NA	Cross-trigger interface	Application core CTI
0xE0042000	NETWORK	CTI	CTI	NS	NA	Cross-trigger interface	Network core CTI

Table 2. Register overview
Register	Offset	Description
CTICONTROL	0x000	CTI Control register
CTIINTACK	0x010	CTI Interrupt Acknowledge register
CTIAPPSET	0x014	CTI Application Trigger Set register
CTIAPPCLEAR	0x018	CTI Application Trigger Clear register
CTIAPPPULSE	0x01C	CTI Application Pulse register
CTIINEN[n]	0x020	CTI Trigger to Channel Enable register
CTIOUTEN[n]	0x0A0	CTI Channel to Trigger Enable register
CTITRIGINSTATUS	0x130	CTI Trigger In Status register
CTITRIGOUTSTATUS	0x134	CTI Trigger Out Status register
CTICHINSTATUS	0x138	CTI Channel In Status register
CTIGATE	0x140	Enable CTI Channel Gate register
DEVARCH	0xFBC	Device Architecture register
DEVID	0xFC8	Device Configuration register
DEVTYPE	0xFCC	Device Type Identifier register
PIDR4	0xFD0	Peripheral ID4 Register
PIDR5	0xFD4	Peripheral ID5 register
PIDR6	0xFD8	Peripheral ID6 register
PIDR7	0xFDC	Peripheral ID7 register
PIDR0	0xFE0	Peripheral ID0 Register
PIDR1	0xFE4	Peripheral ID1 Register
PIDR2	0xFE8	Peripheral ID2 Register
PIDR3	0xFEC	Peripheral ID3 Register
CIDR0	0xFF0	Component ID0 Register
CIDR1	0xFF4	Component ID1 Register
CIDR2	0xFF8	Component ID2 Register
CIDR3	0xFFC	Component ID3 Register

CTICONTROL

Address offset: 0x000

CTI Control register

The CTICONTROL register enables the CTI.

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																																			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	R/W	Field	Value ID	Value								Description
A	RW	GLBEN										Enables or disables the CTI.
			Disabled	0								All cross-triggering mapping logic functionality is disabled.
			Enabled	1								Cross-triggering mapping logic functionality is enabled.

CTIINTACK

Address offset: 0x010

CTI Interrupt Acknowledge register

The CTIINTACK register is a software acknowledge for a trigger output. This register is used when ctitrigout is used as a sticky output. That is, no hardware acknowledge is available and a software acknowledge is required.

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																												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	R/W	Field	Value ID	Value								Description
A-H	W	INTACK[i] (i=0..7)										Acknowledges the ctitrigout i output.
			Acknowledge	1								Clears the ctitrigout.

CTIAPPSET

Address offset: 0x014

CTI Application Trigger Set register

Writing to the CTIAPPSET register causes a channel event to be raised, corresponding to the bit written to.

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																																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	R/W	Field	Value ID	Value								Description
A-D	RW	APPSET[i] (i=0..3)										Application trigger event for channel i.
			Inactive	0								Application trigger i is inactive.
			Active	1								Application trigger i is active.
			Activate	1								Generate channel event for channel i.

CTIAPPCLEAR

Address offset: 0x018

CTI Application Trigger Clear register

Writing to a bit in the CTIAPPCLEAR register clears the corresponding channel event.

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																																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	R/W	Field	Value ID	Value								Description
A-D	W	APPCLEAR[i] (i=0..3)										Sets the corresponding bits in the CTIAPPSET to 0. There is one bit of the register for each channel.
			Clear	1								Clears the event for channel i.

CTIAPPPULSE

Address offset: 0x01C

CTI Application Pulse register

A write to this register causes a channel event pulse of one cticlk period to be generated. This corresponds to the bit that was written to. The pulse external to the CTI can be extended to multi-cycle by the handshaking interface circuits. This register clears itself immediately, so it can be repeatedly written to without software having to clear it.

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																																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	R/W	Field	Value ID	Value								Description
A-D	W	APPULSE[i] (i=0..3)										Setting a bit HIGH generates a channel event pulse for the selected channel. There is one bit of the register for each channel.
			Generate	1								Generates an event pulse on channel i.

CTIINEN[n] (n=0..7)

Address offset: 0x020 + (n × 0x4)

CTI Trigger to Channel Enable register

The CTIINENn register enables the signaling of an event on CTM channels when a trigger event is received by the CTI. There is a bit for each of the four channels implemented. This register does not affect the application trigger operations.

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																																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	R/W	Field	Value ID	Value								Description
A-D	RW	TRIGINEN[i] (i=0..3)										Enables a cross trigger event to channel i when a ctitrigin input is activated.
			Disabled	0								Input trigger n events are ignored by channel i.
			Enabled	1								When an event is received on input trigger n (ctitrigin[n]), generate an event on channel i.

CTIOUTEN[n] (n=0..7)

Address offset: 0x0A0 + (n × 0x4)

CTI Channel to Trigger Enable register

The CTIOUTENn register defines which channels can generate a ctitrigout[n] output. There is a bit for each of the four channels implemented. This register affects the mapping from application trigger to trigger outputs.

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																																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	R/W	Field	Value ID	Value								Description
A-D	RW	TRIGOUTEN[i] (i=0..3)										Enables a cross trigger event to ctitrigout when channel i is activated.
			Disabled	0								Channel i is ignored by output trigger n.
			Enabled	1								When an event occurs on channel i, generate an event on output event n (ctitrigout[n]).

CTITRIGINSTATUS

Address offset: 0x130

CTI Trigger In Status register

The CTITRIGINSTATUS register provides the status of the ctitrigin inputs.

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																												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	R/W	Field	Value ID	Value								Description
A-H	R	TRIGINSTATUS[i] (i=0..7)										Shows the status of ctitrigini input.
			Active	1								Ctitrigin i is active.
			Inactive	0								Ctitrigin i is inactive.

CTITRIGOUTSTATUS

Address offset: 0x134

CTI Trigger Out Status register

The CTITRIGOUTSTATUS register provides the status of the ctitrigout outputs.

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																												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	R/W	Field	Value ID	Value								Description
A-H	R	TRIGOUTSTATUS[i] (i=0..7)										Shows the status of ctitrigouti output.
			Active	1								Ctitrigout i is active.
			Inactive	0								Ctitrigout i is inactive.

CTICHINSTATUS

Address offset: 0x138

CTI Channel In Status register

The CTICHINSTATUS register provides the status of the ctichin inputs.

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																																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	R/W	Field	Value ID	Value								Description
A-D	R	CTICHINSTATUS[i] (i=0..3)										Shows the status of the ctitrigin i input.
			Active	1								Ctichin i is active.
			Inactive	0								Ctichin i is inactive.

CTIGATE

Address offset: 0x140

Enable CTI Channel Gate register

The CTIGATE register prevents the channels from propagating through the CTM to other CTIs. This enables local cross-triggering (e.g. causing an interrupt when the ETM trigger occurs). It can be used effectively with CTIAPPSET, CTIAPPCLEAR, and CTIAPPPULSE for asserting trigger outputs by asserting channels, without affecting the rest of the system. On reset, this register is 0xF and channel propagation is enabled.

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																																D	C	B	A
Reset 0x0000000F				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	1	1	1	1
ID	R/W	Field	Value ID	Value								Description
A-D	RW	CTIGATEEN[i] (i=0..3)										Enable ctichouti.
			Enabled	1								Enable ctichout channel i propagation.
			Disabled	0								Disable ctichout channel i propagation.

DEVARCH

Address offset: 0xFBC

Device Architecture register

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																																			A
Reset 0x47701A14				0	1	0	0	0	1	1	1	0	1	1	1	0	0	0	0	0	0	0	1	1	0	1	0	0	0	0	1	0	1	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	Architecture										Contains the CTI device architecture.

DEVID

Address offset: 0xFC8

Device Configuration register

The DEVID register indicates the capabilities of the component.

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																C	C	C	C	B	B	B	B	B	B	B	B				A	A	A	A	A
Reset 0x00040800				0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	EXTMUXNUM										Indicates the number of multiplexers available on Trigger Inputs and Trigger Outputs that are using asicctl. The default value of 0b00000 indicates that no multiplexing is present.
B	R	NUMTRIG										Number of ECT triggers available.
C	R	NUMCH										Number of ECT channels available.

DEVTYPE

Address offset: 0xFCC

Device Type Identifier register

The DEVTYPE register provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.

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																												B	B	B	B	A	A	A	A
Reset 0x00000014				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	1	0	1	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	MAJOR										Major classification of the type of the debug component as specified in the Arm Architecture Specification for this debug and trace component.
			Controller	4								Indicates that this component allows a debugger to control other components in an Arm CoreSight SoC-400 system.
B	R	SUB										Sub-classification of the type of the debug component as specified in the Arm Architecture Specification within the major classification as specified in the MAJOR field.
			Crosstrigger	1								Indicates that this component is a sub-triggering component.

PIDR4

Address offset: 0xFD0

Peripheral ID4 Register

The PIDR4 register is part of the set of peripheral identification registers. It contains part of the designer identity and the memory size.

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																												B	B	B	B	A	A	A	A
Reset 0x00000004				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	1	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	DES_2										Together, PIDR1.DES_0, PIDR2.DES_1, and PIDR4.DES_2 identify the designer of the component.
			Code	4								JEDEC continuation code.
B	R	SIZE										Always 0b0000. Indicates that the device only occupies 4KB of memory.

PIDR5

Address offset: 0xFD4

Peripheral ID5 register

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
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	R/W	Field	Value ID	Value								Description

PIDR6

Address offset: 0xFD8

Peripheral ID6 register

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
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	R/W	Field	Value ID	Value								Description

PIDR7

Address offset: 0xFDC

Peripheral ID7 register

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
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	R/W	Field	Value ID	Value								Description

PIDR0

Address offset: 0xFE0

Peripheral ID0 Register

The PIDR0 register is part of the set of peripheral identification registers. It contains part of the designer- specific part number.

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																												A	A	A	A	A	A	A	A
Reset 0x00000021				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	1	0	0	0	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PART_0										Bits[7:0] of the 12-bit part number of the component. The designer of the component assigns this part number.
			PartnumberL	0x21								Indicates bits[7:0] of the part number of the component.

PIDR1

Address offset: 0xFE4

Peripheral ID1 Register

The PIDR1 register is part of the set of peripheral identification registers. It contains part of the designer- specific part number and part of the designer identity.

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																												B	B	B	B	A	A	A	A
Reset 0x000000BD				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	1	1	1	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PART_1										Bits[11:8] of the 12-bit part number of the component. The designer of the component assigns this part number.
			PartnumberH	13								Indicates bits[11:8] of the part number of the component.
B	R	DES_0										Together, PIDR1.DES_0, PIDR2.DES_1, and PIDR4.DES_2 identify the designer of the component.
			Arm	11								Arm. Bits[3:0] of the JEDEC JEP106 Identity Code

PIDR2

Address offset: 0xFE8

Peripheral ID2 Register

The PIDR2 register is part of the set of peripheral identification registers. It contains part of the designer identity and the product revision.

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																												C	C	C	C	B	A	A	A
Reset 0x0000000B				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	1	0	1	1
ID	R/W	Field	Value ID	Value								Description
A	R	DES_1										Together, PIDR1.DES_0, PIDR2.DES_1, and PIDR4.DES_2 identify the designer of the component.
			Arm	3								Arm. Bits[6:4] of the JEDEC JEP106 Identity Code
B	R	JEDEC										Always 1. Indicates that the JEDEC-assigned designer ID is used.
C	R	REVISION										Peripheral revision
			Rev0p0	0								This device is at r0p0

PIDR3

Address offset: 0xFEC

Peripheral ID3 Register

The PIDR3 register is part of the set of peripheral identification registers. It contains the REVAND and CMOD fields.

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																												B	B	B	B	A	A	A	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	R/W	Field	Value ID	Value								Description
A	R	CMOD										Customer Modified. Indicates whether the customer has modified the behavior of the component. In most cases, this field is 0b0000. Customers change this value when they make authorized modifications to this component.
			Unmodified	0								Indicates that the customer has not modified this component.
B	R	REVAND										Indicates minor errata fixes specific to the revision of the component being used, for example metal fixes after implementation. In most cases, this field is 0b0000. Arm recommends that the component designers ensure that a metal fix can change this field if required, for example, by driving it from registers that reset to 0b0000.
			NoErrata	0								Indicates that there are no errata fixes to this component.

CIDR0

Address offset: 0xFF0

Component ID0 Register

The CIDR0 register is a component identification register that indicates the presence of identification registers.

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																												A	A	A	A	A	A	A	A
Reset 0x0000000D				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	1	1	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_0										Preamble[0]. Contains bits[7:0] of the component identification code.
			Value	0x0D								Bits[7:0] of the identification code.

CIDR1

Address offset: 0xFF4

Component ID1 Register

The CIDR1 register is a component identification register that indicates the presence of identification registers. This register also indicates the component class.

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																												B	B	B	B	A	A	A	A
Reset 0x00000090				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	1	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_1										Preamble[1]. Contains bits[11:8] of the component identification code.
			Value	0								Bits[11:8] of the identification code.
B	R	CLASS										Class of the component, for example, whether the component is a ROM table or a generic CoreSight component. Contains bits[15:12] of the component identification code
			Coresight	9								Indicates that the component is a CoreSight component.

CIDR2

Address offset: 0xFF8

Component ID2 Register

The CIDR2 register is a component identification register that indicates the presence of identification registers.

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																												A	A	A	A	A	A	A	A
Reset 0x00000005				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	1	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_2										Preamble[2]. Contains bits[23:16] of the component identification code.
			Value	0x05								Bits[23:16] of the identification code.

CIDR3

Address offset: 0xFFC

Component ID3 Register

The CIDR3 register is a component identification register that indicates the presence of identification registers.

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																												A	A	A	A	A	A	A	A
Reset 0x000000B1				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	0	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_3										Preamble[3]. Contains bits[31:24] of the component identification code.
			Value	0xB1								Bits[31:24] of the identification code.