Lpc2000

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