User guide

Trace Port Interface Unit

ID072410 Non-Confidential

11.3.11 TPIU_DEVTYPE

The Device Type Identifier Register is read-only. It provides a debugger with information about

the component when the Part Number field is not recognized. The debugger can then report this

information.

The TPIU_DEVTYPE characteristics are:

Purpose Indicates the type of functionality the component supports.

Usage Constraints There are no usage constraints.

Configurations This register is available in all processor configurations.

Attributes The Device Type reads as 0x11 and indicates this device is a trace sink and

specifically a TPIU

Figure 11-12 shows the TPIU_DEVTYPE bit assignments.

Figure 11-12 TPIU_DEVTYPE bit assignments

[8:6] Minimum buffer size Specifies the minimum TPIU buffer size:

0b010

= 4 bytes.

[5] Asynchronous

TRACECLKIN

Specifies whether TRACECLKIN can be asynchronous to CLK:

0b1

= TRACECLKIN can be asynchronous to CLK.

[4:0] Number of trace inputs Specifies the number of trace inputs:

0b000000

= 1 input

0b000001

= 2 inputs

If your implementation includes an ETM, the value of this field is

0b00001

Table 11-11 TPIU_DEVID bit assignments (continued)

Bits Name Function

Reserved

31 780

Sub type

Major type