ARM Cortex-A35

Table A-29 ACE read data channel signals
Signal Direction Description
RDATAM[127:0] Input Read data
RIDM[5:0] Input Read data ID
RLASTM Input Read data last transfer indication
RREADYM Output Read data ready
RRESPM[3:0] Input Read data response
RVALIDM Input Read data valid
Table A-30 ACE coherency address channel signals
Signal Direction Description
ACADDRM[43:0] Input
Snoop address.
The top 4 bits communicate only the ACE virtual address for DVM messages.
ACPROTM[2:0] Input
Snoop protection type.
ACREADYM Output
Master ready to accept snoop address.
ACSNOOPM[3:0] Input
Snoop request type.
ACVALIDM Input
Snoop address valid.
Table A-31 ACE coherency response channel signals
Signal Direction Description
CRREADYM Input
Slave ready to accept snoop response
CRVALIDM Output
Snoop response
CRRESPM[4:0] Output
Snoop response valid
Table A-32 ACE coherency data channel handshake signals
Signal Direction Description
CDDATAM[127:0] Output
Snoop data
CDLASTM Output
Snoop data last transform
CDREADYM Input Slave ready to accept snoop data
CDVALIDM Output Snoop data valid
Table A-33 ACE read and write acknowledge signals
Signal Direction Description
RACKM Output Read acknowledge
WACKM Output Write acknowledge
A Signal Descriptions
A.12 ACE interface signals
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