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CHAPTER 16 SERIAL INTERFACE CHANNEL 0 ( µ PD78014Y Subseries)
(8) Communication operation
In the SBI mode, the master device selects normally one slave device as communication target from among two
or more devices by outputting an "address" to the serial bus.
After the communication target device has been determined, commands and data are transmitted/received and
serial communication is realized between the master and slave devices.
Figures 16-29 to 16-32 show data communication timing charts.
Shift operation of the serial I/O shift register 0 (SIO0) is carried out at the falling edge of serial clock (SCK0).
Transmit data is latched into the SO0 latch and is output with MSB set as the first bit from the SB0/P25 or SB1/
P26 pin.
Receive data input to the SB0 (or SB1) pin at the rising edge of SCK0 is latched into the SIO0.
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