Maxim-integrated MAXQ7667 Manual do Utilizador descarregar pdf (Página 174)

100

101

__________________________________________________________________________________________________________ 9-12

MAXQ7667 User’s Guide

Data can be written to the serial register once the STBY flag is cleared and the SPIC flag is set. This allows the next transfer to begin

while the read operation is pending. In this overlapped mode, the read buffer must be emptied before the next character is complete-

ly loaded into the shift register. Should the next transfer cycle complete, the ROVR flag is set if the SPIB contents have not been read.

Figure 9-3 shows a typical master mode transfer cycle with SPIB read and write cycles.

Figure 9-3. Master Mode Transfer Cycle Operation

SYSCLK

SPIB WRITE

FLAG CLEARED UNDER

SOFTWARE CONTROL

TRANSFER

COMPLETE

DATA WRITTEN

INTO READ BUFFER

SLAVE

DISABLE

STBY FLAG

SPIC FLAG

SPIB READ

SPICK (CKPOL = 0)

(CKPHA = 0)

SAMPLE EDGE SHIFT EDGE

SPICK (CKPOL = 1)

(CKPHA = 0)

MOSI

MISO

MSB

LSB

MSB

SLAVE

ENABLE

1 2 ... 169 170 171 172 173 174 175 176 177 178 179 ... 346 347

Comentários a estes Manuais

Sem comentários

Maxim-integrated MAXQ7667 Manual do Utilizador Página 174

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Maxim-integrated MAXQ7667