NEC PD75402A User Manual
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CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS
(d) Command & data
The master performs command transmission to or data transmission/reception to/from the slave selected
by address transmission.
Fig. 5-38 Command
SCK
SB0
Command Signal
Command
1
2
3
4
5
6
7
8
C7
C6
C5
C4
C3
C2
C1
C0
Fig. 5-39 Data
SCK
SB0
1
2
3
4
5
6
7
8
D7
D6
D5
D4
D3
D2
D1
D0
Data
The 8-bit data following the command signal is defined as a command. 8-bit data with no command signal
is defined as data. The way in which commands and data are used can be freely decided according to the
communication specifications.
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