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a target address, "failure" will be returned. (refer to Figure APP-114)
In the case that an exclusive write access (ExW) occurs to an address that is not a target to snoop, "failure"
will be returned at the timing of an exclusive write access from the master with the exclusive access right.
(refer to Figure APP-115)
For all failure cases, write to the slave is not performed.
Access phase
Respons phase
snoop_mid
snoop_addr
snoop_flag
exfail_flag
Access phase
Respons phase
snoop_mid
snoop_addr
snoop_flag
exfail_flag
Access phase
Respons phase
snoop_mid
snoop_addr
snoop_flag
exfail_flag
ExR
A0
MID0
D0
success
Figure APP-113 Failure Case 1 of Exclusive Access
Write invalid
ExR
ExR
A0
A0
MID1
MID0
D0
D0
success
success
Figure APP-114 Failure Case 2 of Exclusive Access
ExR
A0
MID1
D0
success
Figure APP-115 Failure Case 3 of Exclusive Access
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W
A0
MID1
D1
success
MID0
A0
ExW
A0
MID0
D1
fail
MID1
A0
Write invalid
ExW
A1
MID0
D1
fail
MID1
A0
CXD5602 User Manual
Write invalid
ExW
A0
MID0
D2
fail
ExW
A0
MID1
D2
success
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