9 Debug Port Identification Register 1, DPIDR1

The DPIDR1 register is the extension of DPIDR and provides information about the Debug Port.

The DPIDR1 register characteristics are:

Attributes
Offset

0x0000

Type

Read-only

Reset

0x0000008C

Width

32

The following figure shows the bit assignments.

Figure 9-3 DPIDR1 register bit assignments
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The following table shows the bit assignments.

Table 9-4 DPIDR1 register bit assignments

Bits Reset value Name Function
[7] 0b1 ERRMODE

Error reporting mode support.

0

CTRLSTAT.ERRMODE not implemented.

1

CTRLSTAT.ERRMODE implemented.

[6:0] 0b0001100 ASIZE

Address size. This defines the size of the address in the SELECT register, and the BASEPTR0 register. Allowed values are 0x0C: 12-bit address, 0x14: 20-bit address, 0x20: 32-bit address. All other values are reserved.

This is an implementation-defined value that depends on the configuration of the component.

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