Why is the multichannel audio kit powered from a 12v Adaptor

[yes2i2s]

Hi

I am looking at the schematic for the multi channel audio kit.

I notice that nothing uses more than 5v on the power side. So why is an initial 12v supply used and then converted to 5v, instead of just using a 5v source supply and filtering it?

I need to know this as I am designing the power for the XMOS rig on my PCB.

Thanks!

[henk]

It may be because XMOS uses standard power supplies that are 12V?

As far as the XMOS processor goes; you just need 3V3 and 1V; no 5V required either.

[yes2i2s]

Thanks

Although the multi channel board has various 5v lines are these for things such as SPDIF as we are using the SPDIF out from the ref design.

Thanks!

[Ross]

Mod edit: Subject changed from "Why 12v" to "Why is the multichannel audio kit powered from a 12v Adaptor"

Please try and keep topic titles useful to others, thanks! :)