Master Device Processing (Receiver)
Program Processing
Hardware Operation
Transfer Line
SCK0 Pin
SB0 (SB1) Pin
BUSY
Slave Device Processing (Transmitter)
Write to
Program Processing
Hardware Operation
Figure 16-32. Data Transmission from Slave Device to Master Device
FFH Write
to SIO0
SCK0
Serial Transmission
Stop
1
2
3
D7
D6
D5
READY
SIO0
BUSY
Serial Reception
Clear
SIO0
Read
INTCSI0
Generation
4
5
6
7
8
9
D4
D3
D2
D1
D0
Data
INTCSI0
Generation
ACKT
FFH Write
Receive Data Processing
Set
to SIO0
Serial
ACK
Output
Reception
1
2
D6
ACK
BUSY
READY
D7
Write to
SIO0
ACKD
BUSY
BUSY
Set
Output
Clear