[alsa-devel] Surround and SPDIF on STAC9277

[Jon Smirl]

I've figure out that the answer that I'm looking for is AC3 over SPDIF
support. Now I'm trying to figure out how to make it work in pulse.

On 5/24/08, Jon Smirl <jonsmirl at gmail.com> wrote:
> How are you supposed to get 5.1 audio out of your PC? When I hook the
>  SPDIF device from my STAC9227/HDA audio up to pulse, pulse says that
>  the SPDIF channel only supports stereo.
>
>  So I go digging around the in STAC9227 datasheet.
>  http://www.idt.com/?genID=STAC9227
>
>  STAC9227 codec only supports 192Khz SPDIF with 4/1*48Khz channels. It
>  doesn't support 384Khz with 8/1*48Khz channels.
>
>  So there are two problems, first the existing Intel HDA/STAC9227
>  driver is not exposing the 4 channel SPDIF support. Or I can't figure
>  out how to get to it.
>
>  Second, the hardware doesn't seem to support any way to get digital
>  5.1 audio out of the codec and into my Sony amp. STAC9227 does have
>  six channel analog out, but my Sony amp doesn't have 6 channel analog
>  in. Sony amp supports 384Khz 8-channel SPDIF in.
>
>
>  --
>  Jon Smirl
>  jonsmirl at gmail.com
>


-- 
Jon Smirl
jonsmirl at gmail.com