[Community] GTA04A5 ready to be pre-ordered

[NeilBrown]

On Tue, 22 Jan 2013 10:02:38 +0100 "Dr. H. Nikolaus Schaller"
<hns at goldelico.com> wrote:


> Preliminary (there may still come minor changes coming from PCB
> Layout tuning and from first production feedback) schematics can be found here:
> 
> 	<http://projects.goldelico.com/p/gta04-main/downloads/48/>

Thanks!

One thing that has always bothered me a little bit is that the FM transceiver
is wired for digital IO rather than analog.  That means that the CPU needs to
be active to copy sound around in order to listen to the radio.  If the
LOUT/ROUT pins were connected to the line-in pins on the audio chip you
should be able to listen to the radio with the CPU off.
It would mean that you couldn't get the same fidelity if you wanted a digital
copy of the broadcast, but I wonder if that really matters.

What is the expected use-case of the FM radio?  If it is just for listening
to, the current config doesn't seem to be optimal.

Related: have you thought about connecting the bluetooth PCM interface
directly to the TPS chip in the same way that the Modem's PCM interface is
connected?

That should allow the use of a bluetooth headset on a phone call without any
CPU intervention.

Just thinking out loud - looking forward to the A5 being a reality!

NeilBrown
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