NEC uPD78P078 User Manual
Page 338
CHAPTER 17 SERIAL INTERFACE CHANNEL 0 (
µ
PD78078 SUBSERIES)
338
(d) Command and data
The master device transmits commands to, and transmits/receives data to/from the slave device
selected by address transmission.
Figure 17-16. Commands
Figure 17-17. Data
8-bit data following a command signal is defined as “command” data. 8-bit data without command signal
is defined as “data”. Command and data operation procedures are allowed to determine by user
arbitrarily according to communications specifications.
SCK0
C7
C6
C5
C4
C3
C2
C1
C0
1
2
3
4
5
6
7
8
SB0 (SB1)
Command
Command Signal
SCK0
D7
D6
D5
D4
D3
D2
D1
D0
1
2
3
4
5
6
7
8
SB0 (SB1)
Data