Example Of Serial Bus Configuration - NEC PD75402A User Manual

(12) SBI mode application
This section presents examples of applications in which serial data communication is performed in SBI mode.
In these application examples, the PD75402A is operated as a slave CPU on the serial bus.
Also, the master can be changed by a command.
(a) Serial bus configuration
In the serial bus configuration in the application examples given here, the PD75402A is connected to the
bus line as one of the devices on the serial bus.
The PD75402A uses two pins: The serial data bus SB0 (P02/SO), and the serial clock SCK (P01).
An example of the serial bus configuration is shown in Fig. 5-53. Only addresses C0H through C7H can be
allocated to the PD75402A.
CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS
Fig. 5-53 Example of Serial Bus Configuration
V
DD
Master CPU
PD75308
SB0 (SB1)
SCK
Slave CPU
PD75328
SB0 (SB1)
Address 1
SCK
Slave CPU
PD75402A
SB0
Address C0H
SCK
Slave IC
SB0 (SB1)
Address N
SCK
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