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Audio Input through Auxiliary ADC on ADAU1701

Question asked by ShyamN on Jul 26, 2011
Latest reply on Aug 2, 2011 by BrettG



ADAU1701 has four 8-bit Auxiliary ADCs. I need to feed audio input (8-bit resolution is OK) through one of the four Auxiliary ADCs and route it to a 24-bit DAC.


How is the data format handled in this case? Is 8-bit data from Aux ADC filled up in lower 8 bits of 24-bit DAC, with upper 16 bits set to zeros?

Is there a SigmaStudio block that can handle the above data type conversion?

Can I use a gain block to multiply the 8-bit Aux ADC data so that it fits in the upper 8 bits of 24-bit DAC?