B2.38 DCZID_EL0, Data Cache Zero ID Register, EL0

The DCZID_EL0 indicates the block size written with byte values of zero by the DC ZVA (Data Cache Zero by Address) system instruction.

Bit field descriptions

DCZID_EL0 is a 32-bit register, and is part of the Identification registers functional group.

This register is Read Only.

Figure B2-33 DCZID_EL0 bit assignments
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RES0, [31:5]
BlockSize, [3:0]

Log2 of the block size in words:

0100The block size is 16 words.

There are no configuration notes.

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

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