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Communication Type
Communication Target
(USR.ALLTRANS bit)
(USR.SLVRQ bit)
Individual
Slave Specification = 1
Communication = 0
No Specification = 0
Broadcast
Communication = 1
0
1
Communication Type
Communication Target
(USR.ALLTRANS bit)
(USR.SLVRQ bit)
Individual
Slave Specification = 1
Communication = 0
No Specification = 0
Broadcast
Communication = 1
0
1
Caution If the received control data is other than the data shown in Table 18-5, × × × × (NACK signal is returned) is unconditionally assumed.
Remarks 1.
: ACK signal is returned.
×: NACK signal is returned.
Table 18-5. Acknowledge Signal Output Condition of Control Field
(a) If received control data is AH, BH, EH, or FH
Lock Status
Master Unit
(USR.LOCK bit)
Identification (Match
Lock = 1
with PAR register)
Unlock = 0
Lock Request Unit = 1
Other = 0
0
don't care
1
1
Other than above
(b) If received control data is 0H, 3H, 4H, 5H, 6H, or 7H
Lock Status
Master Unit
(USR.LOCK bit)
Identification (Match
Lock = 1
with PAR register)
Unlock = 0
Lock Request Unit = 1
Other = 0
0
don't care
1
0
1
Other than above
Slave Transmission
Slave Reception
Enable
Enable
(BCR.ENSLVTX bit)
(BCR.ENSLVRX bit)
don't care
1
Slave Transmission
Slave Reception
Enable
Enable
(BCR.ENSLVTX bit)
(BCR.ENSLVRX bit)
0
don't care
1
don't care
0
1
Received Control Data
AH
BH
EH
FH
×
Received Control Data
0H 3H 4H 5H 6H 7H
×
×
×
×
×
×
×
×
×
×
×
×
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