NEC PD75P402 Manuale Utente Pagina 109

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98
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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