13.3.10. Device Configuration Register

The TPIU_DEVID characteristics are:

Purpose

Indicates the functions provided by the TPIU for use in topology detection.

Usage constraints

There are no usage constraints.

Configurations

Available in all configurations.

Attributes

Figure 13.11 shows the TPIU_DEVID bit assignments.

Figure 13.11. TPIU_DEVID bit assignments

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Table 13.11 shows the TPIU_DEVID bit assignments.

Table 13.11. TPIU_DEVID bit assignments

BitsNameFunction
[31:12]-Reserved.
[11]NRZVALID

Indicates support for SWO using UART/NRZ encoding.

Always RAO. The output is supported.

[10]MANCVALID

Indicates support for SWO using Manchester encoding.

Always RAO. The output is supported.

[9]PTINVALID

Indicates support for parallel trace port operation.

Always RAZ. Trace data and clock modes are supported.

[8:6]FIFOSZ

Indicates the minimum implemented size of the TPIU output FIFO for trace data:

0b010

Four bytes.

[5:0]Number of trace inputs

Specifies the number of trace inputs:

0b000000

One input.

0b000001

Two inputs.

If your implementation includes an ETM, the value of this field is 0b000001.


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