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Question about the ADC sample rate of AD1939

Question asked by Quiwi on Mar 4, 2015
Latest reply on Mar 5, 2015 by DaveThib

I am using ADSP21489 Ez-board, the codec is AD1939. In the datasheet of AD1939, the sample rate of ADC can be set by the ADC Control0 Register with bit 6 and bit 7. When these two bits are set to 00, sample rate is 32kHz/44.1kHz/48kHz.

 

I tested the actual fs clock using analog input, however the fs clock was always 48kHz.

 

So how to use 32kHz or 44.1kHz as the ADC sample rate?

 

Many thanks!

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