On Thu, 23 Nov 2017, Mark Brown wrote:
In my case the codec is only a couple of years old, so I'd say it qualifies as 'modern'. There's a table in the data sheet describing the
Wow, people are still designing new VMID based CODECs - what is this one?
In this case it's the AK4637. From the data sheet it looks to be from 2015.
I know there are codecs that do not need their inputs/outputs (internally) biased to a VMID, but have a 0V bias level using an internal charge-pump design to generate the required internal negative voltages, if that is what you're thinking of. One disadvantage from a cost perspective is the external capacitors needed for the charge pump to operate, and the design in which this one is used is extermely cost optimized.
During which time period is the digital mute enabled? From the first stream startup until everything is up and running?
It should be enabled at all times that we're not actively playing anything.
Ok. So it really would be the last callback made (with mute = off) to the codec driver once everything else has been set up then?
/Ricard