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Arm Cortex-A55 Core Technical Reference Manual : EDCIDR1, External Debug Component Identification Register 1

EDCIDR1, External Debug Component Identification Register 1

The EDCIDR1 provides information to identify an external debug component.

Bit field descriptions

Figure D3-2 EDCIDR1 bit assignments


RES0, [31:8]
res0Reserved.
CLASS, [7:4]
0x9Debug component.
PRMBL_1, [3:0]
0x0Preamble.

Bit fields and details not provided in this description are architecturally defined. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.

The EDCIDR1 can be accessed through the external debug interface, offset 0xFF4.

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