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ADAU1761 Function Issue

Question asked by paul.wu on Aug 27, 2013


        I am use ADAU1761 to wireless mic application , but I have some issue about ADAU1761. I design high / low pass FIR filter on ADAU1761 , if I only use FIR filter that 32.768KHz outpur is very accurate ,then I add some function in this schematic the 32.768 KHz source output become 16KHz output. Is it because DSP resource not enough ? The attachment is schematic for the ADAU1761. Thank you.