398
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PD78214 Sub-Series
Fig. 16-3 Example of Communication with SBI
Address Command Command
SB0
Address Command Data Command
SB0
Address Command Data Data
SB0
Address Data Data Data
SB0
Address Data Data CommandData
SB0
: Bus release
: Command trigger
Fig. 16-4 Serial Bus Communication Timing
A7 A0
89
ACK BUSY
SCK
SB0
C7 C0
89
ACK BUSY
SCK
SB0 READY
Address transfer
Command transfer
D7 D0
89
ACK BUSY
SCK
SB0 READY
Data transfer
Bus release signal
Command signal
Selection of slave CPU (a feature of SBI)