[Gta04-owner] GTA04A3 System Manual

[NeilBrown]

On Wed, 12 Oct 2011 09:22:23 +0200 Christoph Mair <christoph.mair at gmail.com>
wrote:

> On Tue, Oct 11, 2011 at 11:41 PM, NeilBrown <neilb at suse.de> wrote:


> > And the interrupt line from the accelerometer(s) are connected to GPIO lines
> > on the CPU rather than on the power controller, which seems to suggest that
> > the accelerometer cannot wake the system from sleep mode.  Is that correct?
> I'm not sure about this but I think the processor can tell the power
> controller that it wants to wake up.
> 

Thanks.  I managed to find
  http://processors.wiki.ti.com/index.php/AM/DM37x_Overview#General_Purpose_I.2FO_.28GPIO.29_Interface

which says

--------
These pins can be configured for the following applications:

 .....
    Wake-up request generation in idle mode upon the detection of external events. 
-----------

Which certainly supports your theory.

There is certainly lots of documentation around for some of this stuff.
Making sense of it when you are a hardware-newbie can be a challenge though.

Another correction:
The feature comparison says:

     Feature    GTA02 / GTA01             GTA04

     RAM        256 MB (GTA01: 128 MB)    512 MB

And I thought "what, only twice the RAM", but I just checked my GTA02 and it
says:

     Memory: 128MB = 128MB total

So either I was short-changed, or the comparison is wrong.

Thanks,
NeilBrown

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