Lpc2000

> A simple solution would be a LPC213x micro & use the 10 bit d/a 
that's built it.

What audio frequency can you do with the internal DAC?
Can someone explain more what is xxdb s/n? I am assuming s/n means 
signal/noise! So when we say 60db s/n, what does this mean? good 
audio? bad? acceptable?

Thanks,

Gus

--- In lpc2000@yahoogroups.com, "jdw07675" 
<jdwilson@c...> wrote:
> 
> I suppose I'd first ask how good does the audio actually have to 
> be?  Full CD quality 44khz 16bit is extreme overkill if it's just 
> going to drive a small speaker.  There is also the issue of where 
is 
> all this audio going to be stored?
> 
> A simple solution would be a LPC213x micro & use the 10 bit d/a 
> that's built it.  If 60db s/n is all you need, that would work 
> pretty well.  Some of the TI AIC chips are pretty good for this 
sort 
> of thing as they contain a few etra bits and pieces to simplify 
the 
> hardware.
> 
> 
> The fancier SPI port on the LPC213x looks like it would work well 
> with a serial DAC or codec.  You just need to pick one that likes 
> TDM style signalling (i.e. with a frame sync) rather than  I2S.  
DAC 
> is output only, CODEC is a DAC + ADC.
> 
> 
> - jeff
> 
> 
> 
> --- In lpc2000@yahoogroups.com, "Gus" <gus_is_working@y...> wrote:
> > 
> > Hello,
> > 
> > For the analog and audio smarts out there I have some questions.
> > 
> > I need to generate a good quality audio using LPC chips. The 
audio 
> > will be a 44.1Khz 16-bit WAV file. I can take care of 
> > loading/parsing data in RAM. Now, we need to convert the digital 
> > data to analog signal.
> > 
> > - Would you use SPI or parallel bus to access the DAC chip?
> > - What DAC chip you guys recomend?
> > - What is the diference between codec and DAC?!?
> > 
> > 
> > Thanks,
> > 
> > Gus