[mythtv-users] spdif and m3n78-em

[Allen Edwards]

On Sun, Feb 1, 2009 at 7:47 AM, Phil Wild <philwild at gmail.com> wrote:
> Hello all,
>
> I am back once more with audio issues.
>
> I have an m3n78-em motherboard with onboard hdmi and spdif. I have had hdmi
> audi and video working fine for a couple of weeks now but decided to switch
> to the optical port for audio (as I am toying with using svga for video).
>
> I can not seem to get the optical spdif port to light up. aplay report it as
> available, it is not muted in alsamixer. I am running mythbuntu with alsa
> upgraded to 1.0.19
>
> Has anyone managed to get digital audio out through spdif on this board?
>
> Cheers
>
> Phil
>
>

There is a spdif output on all ASUS mother boards somewhere and with
two resistors and a capacitor you can make an adapter that will allow
you to use that to drive a spdif coax output.  I have done this as I
drive two external decoders, one for 5.1 and one for stereo.  I have
heard people say that the optical outputs are unreliable on
motherboards in general.  I have no special knowledge on this board.

Let me know if you want details on the adapter.

Allen