2-Wire Serial I/O Mode Operation; Serial Bus Configuration Example Using 2-Wire Serial I/O Mode - NEC PD78052 User Manual

CHAPTER 17 SERIAL INTERFACE CHANNEL 0 ( PD78054Y Subseries)

17.4.3 2-wire serial I/O mode operation

The 2-wire serial I/O mode can cope with any communication format by program.
Communication is basically carried out with two lines of serial clock (SCK0) and serial data input/output (SB0 or
SB1).
Figure 17-10. Serial Bus Configuration Example Using 2-Wire Serial I/O Mode
(1) Register setting
The 2-wire serial I/O mode is set with the serial operating mode register 0 (CSIM0), the serial bus interface
control register (SBIC), and the interrupt timing specify register (SINT).
V
DD
Master
SCK0
SB0 (SB1)
V
DD
Slave
SCK0
SB0 (SB1)
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