I’m working on a prototype Eurorack module using the Daisy Seed. Being only 4hp wide, and constrained for space, I was curious if the CODEC used here could be misused to handle DC coupled CV signals both on the input, and the output (not for V/Oct obviously, but for LFOs, envelopes, etc).
According to the AK4556 datasheet, DC output from the DAC should be possible with the digital LPF, but DC Input on the ADC side is not possible due to the enabled digital HPF. This filter could be disabled by pulling up pin CKS1 on the codec, but it is currently pulled down.
While it might be possible to remove and bridge the coupling caps, and maybe somehow pull CKS1 up, It would certainly be pretty tricky. While I understand the design decision here, I was wondering if:
- there is another way to achieve this that I didn’t see
- a future revision might make this an option.