Re: [Gumstix-users] Sony ACX705AKM extra connector?

[Robert N. <tfc...@gm...>]

Hi Chad,

Thanks for the info. I see the MIC signals dpcumented for the main connector
and the pass-through to the extra flex connector.

Rob



On 1/19/07, Chad Robinson <cr...@lu...> wrote:
>
> Robert Norman wrote:
> > Hi all,
> > I'm trying to integrate a Sony ACX705AKM lcd display following
> > suggestions here and on the wiki. The device that just came in from
> > earthlcd has a small flex cable with an odd termination on the side of
> > the LCD that is not documented in the Sony PDF file for that display.
> > I'm guessing that it may be a touch screen but support at earthlcd has
> > no information about the connector.
> >
> > Anyone know about this connector?
> >   What is it?
> >   What's the pinout?
> >   Any matching connectors available?
>
> Are you talking about the tiny two-pad bit that sticks out the
> lower-right side? This screen was designed for a PDA, and that's for a
> microphone. If you trace the wires they're just pass-throughs to two
> pins on the FFC connector. There are mini microphones for which that pad
> spacing would be just perfect.
>
> Since they're just pass-throughs you could probably run whatever you
> wanted on the wire. I wouldn't run a high-frequency signal this close to
> the LCD since it sits right against the electronics board, but most
> other things would be fine. A touch screen, though, no, it's only two
> wires and I don't know of any that don't require at least 4.
>
> If we're talking about the same thing, this is documented in the spec
> sheet on pages 4 and 5. You'll see two lines labeled MIC1/MIC2 that pass
> straight through the LCD with no connections. Page 5 shows that they're
> connected back to pins 1 and 2 of the FFC connector. I don't intend to
> use mine, so I just clipped it off.
>
> Regards,
> Chad
>
>
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