You copied the Doc URL to your clipboard.

CTIDEVID, CTI Device ID register 0

The CTIDEVID characteristics are:

Purpose

Describes the CTI component to the debugger.

Configuration

CTIDEVID is in the Debug power domain.

Attributes

CTIDEVID is a 32-bit register.

Field descriptions

The CTIDEVID bit assignments are:

313029282726252423222120191817161514131211109876543210
RES0INOUTRES0NUMCHANRES0NUMTRIGRES0EXTMUXNUM

Bits [31:26]

Reserved, RES0.

INOUT, bits [25:24]

Input/output options. Indicates presence of the input gate. If the CTM is not implemented or CTIv2 is not implemented, this field is RAZ.

INOUTMeaning
0b00

CTIGATE does not mask propagation of input events from external channels.

0b01

CTIGATE masks propagation of input events from external channels.

All other values are reserved.

Bits [23:22]

Reserved, RES0.

NUMCHAN, bits [21:16]

Number of ECT channels implemented. IMPLEMENTATION DEFINED. For Armv8, valid values are:

NUMCHANMeaning
0b000011

3 channels (0..2) implemented.

0b000100

4 channels (0..3) implemented.

0b000101

5 channels (0..4) implemented.

0b000110

6 channels (0..5) implemented.

and so on up to 0b100000, 32 channels (0..31) implemented.

All other values are reserved.

Bits [15:14]

Reserved, RES0.

NUMTRIG, bits [13:8]

Number of triggers implemented. IMPLEMENTATION DEFINED. This is one more than the index of the largest trigger, rather than the actual number of triggers.

For Armv8, valid values are:

NUMTRIGMeaning
0b000011

Up to 3 triggers (0..2) implemented.

0b001000

Up to 8 triggers (0..7) implemented.

0b001001

Up to 9 triggers (0..8) implemented.

0b001010

Up to 10 triggers (0..9) implemented.

and so on up to 0b100000, 32 triggers (0..31) implemented.

All other values are reserved. If the contains a Trace extension, this field must be at least 0b001000. There is no guarantee that any of the implemented triggers, including the highest numbered, are connected to any components.

Bits [7:5]

Reserved, RES0.

EXTMUXNUM, bits [4:0]

Number of multiplexors available on triggers. This value is used in conjunction with External Control register, ASICCTL.

Accessing the CTIDEVID

CTIDEVID can be accessed through the external debug interface:

ComponentOffsetInstance
CTI0xFC8CTIDEVID

Accesses on this interface are RO.



Was this page helpful? Yes No