SPI communication ??

[CosMecc]

does any one can help me to understand how to buid a SPI communication routine?
I would use a AD7731 24 bit DeltaSigma ADC with a PIC16F876, the AD7731 use a SPI interface both for 8 or 16 bits configuration register and for 24 bits data word.
Fist of all is possible to communicate via SPI with AD7731 as it use 8,16 and 24 bits data words?
I suppose yes, and I can do it?

Thanks

[CosMecc]

I2CRead and I2Cwrite commands could be usefull to communicate with the ADC?

[CosMecc]

or SHIFTIN, SHIFTOUT coul be more appropriate?

[Raflex]

Hello. If you need SPI communication use SHIFTIN / SHIFTOUT command.