AnsweredAssumed Answered

Changing 1772 filters without sigma studio

Question asked by JJB on Mar 6, 2014
Latest reply on Mar 6, 2014 by BillJ

Hi,

 

I have an application where I would like to use an ADAU1772.  One of the requirements for this board is that it can implement different digital filters which can be selected by an external input like a dip switch or jumpers.

 

I would like to stick with the 1772 because it has all the hardware interfaces I need (PDM mic, self booting, analog output) and I would like to avoid putting a micro on the board.

 

My idea to do this was to put multiple EEPROMS with the same address on board and have a jumper to enable or disable each EEPROM.  That way the user could select an EEPROM and then reset the board to load a new code with a different pre-defined filter (sigma program).

 

It seems like there should be a more elegant solution.  Can anybody recommend a better approach?

 

Thanks,

JJB

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