Part Number: DAC3100
Hello,
I have a question and would appreciate your support.
I am using the DAC3100 with the following configuration:
P0 / R27 = 0x3C (I2S, 32-bit, BCLK = output, WCLK = output).
When changing the sampling rate, a large amount of noise is generated.
To prevent this noise, I attempted to mute the output; however:
DAC Mute (P0 / R64) introduces a significant pop noise
Analog Volume (P1 / R36, R37) causes noticeable zipper noise when attenuating, resulting in additional noise
On the other hand, with the TLV320DAC3100EVM-U (where BCLK and WCLK are configured as inputs), these noises are relatively small.
Could the primary cause of the large noise be that BCLK and WCLK are configured as outputs?
Are there any countermeasures other than setting BCLK and WCLK as inputs?
For your reference, I have already confirmed that matching all other settings (except BCLK and WCLK) to the EVM does not improve the issue.
Best regards,
