NEC PD750008 - Manual (Page 144)

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µPD750008 USER'S MANUAL
Figure 5-38. Example of the SBI System Configuration
5.6.2 Configuration of Serial Interface
Figure 5-39 shows the block diagram of the serial interface.
SCK
Master CPU
SB0, SB1
SCK
SB0, SB1
Slave CPU
#1 Address 1
SCK
SB0, SB1
Slave IC
#N Address N
Address
Command
Data
Serial clock
V
DD