Signal Descriptions
ARM DDI 0500D Copyright © 2013-2014 ARM. All rights reserved. A-20
ID021414 Non-Confidential
A.11.6 Read data channel signals
Table A-23 shows the read data channel signals for the ACE master interface.
A.11.7 Coherency address channel signals
Table A-24 shows the coherency address channel signals for the ACE master interface.
A.11.8 Coherency response channel signals
Table A-25 shows the coherency response channel signals for the ACE master interface.
Table A-23 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-24 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-25 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
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