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How are RDY/DOUT pins controled?

Question asked by Ahygoon on Oct 15, 2012
Latest reply on Oct 16, 2012 by MaryMc

Hello,

One more question concerning the communication.

RDY/ pin is going low when a data is available. (And high as data is readed or is a new conversion is achived).

In some parts, DRY/ pin is coupled with DOUT.

Is the RDY pin (and DOUT) going low only is the part is selected by the chip select?

 

It comes on the discussion because I said to tream that using AD7195 (part with RDY/ coupled with DOUT) we should use 2 separated SPI bus to connect 2 parts to µC.

A member said that RDY/ should go low only if part is selected.

 

I do not agree because RDY could be use for as an interruption input of µC (so even if the part is not selected).

 

Who's right?

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