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Figure 16-1. Serial Bus Interface (SBI) System Configuration Example
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(4) 2-wire serial I/O mode (MSB-first)
This mode is used for 8-bit data transfer using two lines of the serial clock (SCK0) and serial data bus (SB0 or
SB1).
This mode supports any one of the possible data transfer formats by controlling the SCK0 level and the SB0 or
SB1 output level. Thus, the handshake line previously necessary for connecting two or more devices can be
removed, resulting in an increased number of available input/output ports.
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CHAPTER 16 SERIAL INTERFACE CHANNEL 0 ( µ PD78014Y Subseries)
V
Master CPU
SCK0
SB0
DD
SCK0
SB0
SCK0
SB0
SCK0
SB0
Slave CPU1
Slave CPU2
Slave CPUn
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