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Hello,
In the internal diagram of PCM1863, there is one S-curve volume block in DSP #2. But there is no detailed description in datasheet, how to change this volume?
Best regards
Kailyn
Hi Kailyn,
The S-curve block is a fixed function in the DSP and controls the volume during fade-in and fade-out to avoid pop noise on startup or when muting/unmuting. This is not something you can configure, but an automatic behavior of the device.
Volume adjustment is provided by the analog PGA, Digital PGA, and the mixer coefficient settings.
Best,
Zak
