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(c) Address
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CHAPTER 16 SERIAL INTERFACE CHANNEL 0 ( µ PD78014Y Subseries)
The address is 8-bit data that the master outputs to the slave connected to the bus line to select a specific
slave.
SCK0
SB0 (SB1)
Bus Release Signal
8-bit data following the bus release signal and the command signal is defined as the address. The slave
detects the condition and checks by hardware if 8-bit data matches its specified number (the slave address).
When 8-bit data matches the slave address, which means the slave is selected, the slave communicates
with the master until the master instructs disconnection.
Figure 16-17. Slave Selection with Address
Master
Slave 2
Address Transmission
Figure 16-16. Address
1
2
3
4
A7
A6
A5
Address
Command Signal
Slave 1
Slave 2
Slave 3
Slave 4
5
6
7
8
A4
A3
A2
A1
A0
Non-Selection
Selection
Non-Selection
Non-Selection
349
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