CXD5602 User Manual
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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.
snoop_flag
exfail_flag
snoop_mid
snoop_addr
A0
MID0
D0
ExR
A0
MID0
D2
ExW
A0
MID0
AP
P S
RA
M
N
success
fail
D1
W
A0
MID1
success
Write invalid
Access phase
Respons phase
Figure APP-113 Failure Case 1 of Exclusive Access
snoop_flag
exfail_flag
snoop_mid
snoop_addr
A0
MID1
D0
ExR
A0
MID1
D2
ExW
A0
MID1
AP
P S
RA
M
N
success
success
D0
ExR
A0
MID0
success
D1
ExW
A0
MID0
fail
Write invalid
Access phase
Respons phase
Figure APP-114 Failure Case 2 of Exclusive Access
snoop_flag
exfail_flag
snoop_mid
snoop_addr
D0
ExR
A0
MID1
D1
ExW
A1
MID0
AP
P S
RA
M
N
success
fail
MID1
A0
Write invalid
Access phase
Respons phase
Figure APP-115 Failure Case 3 of Exclusive Access
Summary of Contents for CXD5602
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