[Arm-netbook] a10 cpu has SPDIF

[lkcl luke]

2012/1/28 Henrik Nordström <henrik at henriknordstrom.net>:
> lör 2012-01-28 klockan 13:29 +0000 skrev lkcl luke:
>> i'm looking at the schematics from wits-tech: it turns out that PB12
>> is SPDIF-Digital-In and PB13 is SPDIF-Digital-Out.  this CPU keeps
>> turning up random stuff!
>
> Are you sure OUT is not PB8?

 yep.

> PB13 seems odd..

 yep.

> Assuming it's PB8 then
>
> PB8 = I2S_DO / AC97_DO
> PB12 = I2S_DI / AC97_DI
>
> which makes perfect sense. AC97 is audio, DO/DI == digital output/input.
>
> but
>
> PB13 = SPI2_CSI
>
> which is an entirely different function group not at all related to
> audio.
>
>
> Another comment: Reading the pin descriptions. Pin group E & G, TS is
> MPEG Transport Stream, I.e. where you plug in DVB receivers and the like
> without having to pass the full transport stream via the ARM CPU. The
> A10 have two Transport Stream interfaces (TS0 and TS1).

 oo that's awesome - i didn't realise that... yeah, i mean, i saw "TS"
and i know about DVB receivers but i didn't connect the dots.  that's
just... gaah, really frustrating, why the hell isn't this stuff
properly documented??

 l.
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