A.10.5. Read address channel signals

Table A.21 shows the read address channel signals for the ACE interface.

Table A.21. Read address channel signals

SignalTypeDescription
ARREADYMInput

Read address ready.

ARVALIDMOutput

Read address valid.

ARIDM[5:0]Output

Read request ID.

ARADDRM[43:0]Output

Read address.

ARLENM[7:0]Output

Read burst length. ARLENM[7:2] is always 0b000000.

ARSIZEM[2:0]Output

Read burst size.

ARBURSTM[1:0]Output

Burst type.

ARBARM[1:0]OutputRead barrier type.
ARDOMAINM[1:0]OutputRead shareability domain type.
ARLOCKMOutput

Read lock type.

ARCACHEM[3:0]Output

Read cache type.[a]

ARPROTM[2:0]Output

Read protection type.

ARSNOOPM[3:0]Output

Read snoop request type.

RDMEMATTR[7:0]Output

Read request raw memory attributes:

[7]

Outer Shareable.

[6:3]

Outer memory attribute in MAIR format.

[2]

Inner Shareable.

[1:0]
0b00

Device.

0b01

Normal Non-cacheable.

0b10

Normal Write-Through.

0b11

Normal Write-Back.

[a] Allocation hints based on outer memory attributes from the MMU.


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