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µ PD78214 Sub-Series
SB0
SB0
SB0
SB0
SB0
: Bus release
: Command trigger
Address transfer
SCK
SB0
Command transfer
SCK
SB0
Data transfer
SCK
SB0
398
Fig. 16-3 Example of Communication with SBI
Address
Command
Address
Command
Address
Command
Address
Data
Address
Data
Fig. 16-4 Serial Bus Communication Timing
Selection of slave CPU (a feature of SBI)
A7
Bus release signal
Command signal
C7
D7
Command
Data
Command
Data
Data
Data
Data
Data
Data
8
9
A0
8
9
C0
8
9
D0
Command
ACK BUSY
ACK BUSY
READY
ACK BUSY
READY
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