RE: Unpause causes static

I would much rather have the software fixes than the hardware fixes, I've
already had the soldering iron out once on this thing and I don't fancy
messing with it again. :)

The unit drawing power all the time isn't an issue for me at all, it's only
a tiny amount anyway. In fact I'd love to have it switch to a clock and date
face after a minute of no use and stay like that.

Is there a way to turn off the sleep in the server, or is that handled by
the firmware?

Since the weekends seem to the time all the people working on the server for
this thing come out, hopefully this weekend will bring some nice new toys
for us all.



Richard Smith
[email protected]

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> -----Original Message-----
> From: Sean Adams [mailto:[email protected]]
> Sent: 12 October 2001 20:26
> To: [email protected]
> Subject: Re: [slimp3-dev] Unpause causes static
>
>
>
> This is actually a hardware issue affecting serial numbers 1 through 68.
> It's the same issue that causes an audible "pop" from the DAC when the
> display powers on and off. There are a couple of possible software
> workarounds, discussed below, but the best fix is to add a capacitor
> from +5V to gnd.
>
> When I first designed the player, I did not account for the relatively
> large spike generated when the display is switched on and off. There are
> more than enough small decoupling caps all over the board, but it needs
> one large cap somewhere for the display.
>
> The sleep mode was something I added after the first boards had already
> been done.  I suppose I could just change sleep mode so it blanks the
> display instead of shutting it off, but I like the idea of reducing power
> consumption when it's not in use.
>
> The issue with the sound getting messed up is caused by the MAS3507D being
> reset and needing to be reconfigured. There's a simple software workaround
> - we just need to re-initialize it after un-pausing.
>
> I'll do some testing this weekend to figure how how large of a cap is
> needed and where is the easiest place to install it. I think a 460uF cap
> connected behind the IR receiver should do it.
>
> Sean
>
> On Fri, 12 Oct 2001, Richard Smith wrote:
>
> > Running 1.6, when I pause playback, after a few seconds the
> display goes off
> > and the player shuts down. When I unpause it, the player comes
> back on and
> > playback starts in the same place but the sound is all crackly
> and full of
> > static. Is this a known issue?
> >
> > If I pause it and unpause it without letting the unit power itself down,
> > then playback comes back fine.
> >
> >
> > Richard Smith
> > [email protected]
> >
> > - Free, REALLY customisable hosted messageboards
> > - http://www.chatbear.com/
> > - I wrote them, trust me, they're good... :)
> > - Plus, coming soon, http://www.theonewith.com/
> >
> >
> >
> >
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