A.8.8 Coherency data channel signals for ACE interfaces

Coherency data channel signals, if used, pass snoop data out from an ACE master.

The following table shows the coherency data channel signals for ACE interfaces.

Table A-15 Coherency data channel signals, ACE interfaces

Signal
Direction
Description
CDDATASx[127:0]
Input
Snoop data.
CDLASTSx
Input
Snoop data last transfer.
CDCHECKSUMSx[n:0]
Input
An optional extension to the CD payload that can transmit checksum or parity information for the data.
The width of this signal is IMPLEMENTATION DEFINED.
CDVALIDSx
Input
Snoop data is valid.
CDREADYSx
Output
When HIGH, indicates that the corresponding slave interface is ready to accept snoop data.
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