Command Transmission From Master Device To Slave Device - NEC PD78052 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 16-28. Command Transmission from Master Device to Slave Device
Write
CMDT
Set
to SIO0
Serial Transmission
1 2 3
C7 C6 C5
CMDD
Serial Reception
Set
INTCSI0
Generation
4 5 6 7 8 9
C4 C3 C2 C1 C0
Command
INTCSI0
Generation
Interrupt Servicing
(Preparation for the Next Serial Transfer)
ACKD
Set
ACK BUSY
SIO0 ACKT
Command BUSY
analysis
Read Set Clear
ACK BUSY BUSY
Output Output Clear
SCK0
Stop
READY