[sdiy] Audio Codec Question

[Mattias Rickardsson]

On 9 May 2018 at 08:16, Eric Brombaugh <ebrombaugh1 at cox.net> wrote:

> I know that it's an ancient part, but the CS4270 has a "freeze" bit on the
> ADC DC block that allows you to disable the HPF and lock down the current
> offset value. This would allow pseudo DC-coupling after an initial offset
> calibration period.


I've tried to get an answer from Cirrus Logic if this "freeze" bit can be
set from the very start, resulting in the same DC offset every time,
avoiding the need of an initial calibration period and disconnection of all
possible input stimuli. But I never got an answer, and now the codec I
asked about (another Cirrus CS multichannel codec) is starting to get
ancient.

/mr
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