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TLV320AIC34: Intermittent high pitched noise with TLV320AIC34 and TMS320VC5509A

Part Number: TLV320AIC34


Using the TLV320AIC34 and TLV320AIC34 I'm intermittently getting a high pitched noise that seems to be able to be resolved by enabling the biquad filters. Is there a known way to put the codec into an unstable state that could cause an overlaid high pitched noise to the output?