NEC PD75P402 Manual do Utilizador descarregar pdf (Página 109)

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.

1 2 ... 104 105 106 107 108 109 110 111 112 113 114 ... 194 195

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NEC PD75P402 Manual do Utilizador Página 109