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Interconnect Overview
Table 9-1. MCmd Qualifier Description
MCmd[2:0]
Transaction Type
0 0 0
Idle
0 0 1
Write
0 1 0
Read
0 1 1
ReadEx
1 0 0
Not used
1 0 1
Write nonposted
1 1 0
Not used
1 1 1
Not used
•
MReqInfo qualifier: Four MReqInfo qualifiers describe the access during the use of the firewall
comparison mechanism, as described in
Table 9-2. MReqInfo Qualifier Description
Qualifiers
Description
MReqType
0: Data access
1: Opcode fetch
MReqSupervisor
0: User mode
1: Supervisor mode
MReqDebug
0: Functional access
1: Debug access
•
: Register that configures the combination of the MReqInfo,
allowing access permission to the TM based on the MReqInfo in-band qualifier values.
•
SError: Target that indicates an error condition to the initiator.
•
SResp qualifier: Response from the target to the initiator concerning the transaction.
Table 9-3. SResp Qualifier Description
SResp[1:0]
Description
0 0
No response
0 1
Data valid/accept
1 0
Not used
1 1
Error
1993
SWPU177N – December 2009 – Revised November 2010
Interconnect
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