NEC PD75P402 Manuale Utente

In the SBI mode, communication is performed with multiple devices by means of two lines: The serial clock (SCK)

and the serial data bus (SB0).

This mode conforms to the NEC serial bus format.

In the SBI mode, the sender can output to the serial data bus an address to select the target device for serial

communication, a command which gives a directive to the target device, and actual data. The receiver can determine

by hardware whether the received data is an address, command or actual data.

µ

The serial interface block diagram is shown in Fig. 5-24.

Master CPU

SCK

SCK

Serial Clock

Address       

Command

Data

Slave IC

SCK

Address N

#N

SB0

SB0

SB0

V

DD

Address 1

#1

Slave CPU