Command Transmission From Master Device To Slave Device - NEC PD78076 User Manual

Master Device Processing (Transmitter)
Program Processing
Hardware Operation
Transfer Line
SCK0 Pin
SB0 (SB1) Pin
Slave Device Processing (Receiver)
Program Processing
Hardware Operation
Figure 17-28. Command Transmission from Master Device to Slave Device
Write
CMDT
Set
to SIO0
1 2 3
C7 C6 C5
CMDD
Serial Reception
Set
Serial Transmission
4 5 6 7 8 9
C4 C3 C2 C1 C0
Command
Interrupt Servicing
(Preparation for the Next Serial Transfer)
INTCSI0
ACKD
Generation Set
ACK BUSY
SIO0 ACKT
Command
analysis
Read Set
INTCSI0
ACK BUSY
Generation
Output Output
SCK0
Stop
READY
BUSY
Clear
BUSY
Clear