288
µ
PD78214 Sub-Series
Fig. 10-27 Sending an Address from Master Device to Slave Device
Program processing
Hardware operation
Program processing
SCK pin 12345678
SB0 pin A7
Hardware operation
A6 A5 A4 A3 A2 A1 A0 ACK READY
Address
Master device processing (transmitter)
Transfer line
Slave device processing (receiver)
Interrupt handling (preparation for next serial transfer)
Set
ACKD
Serial transmission Generate
INTCSI
Clear
BUSY
Serial reception
Output
BUSY
Clear
BUSY
BUSY
Set
CMDT
Set
RELT
Set
CMDT
Write
to SIO
Stop
SCK
Read
SIO
Set
ACKT
Set
CMDD
Clear
CMDD
Set
RELD
Set
CMDD
Generate
INTCSI
Output
ACK
Compare
addresses
Remark This timing is valid only under the following conditions:
The master is only allowed to transmit an address.
The slave is only allowed to receive an address.
ACKE is set to 0 and BSYE is set to 1.