On 19 Dec 2005 at 23:17, David Van Horn wrote:

>  
> 
> > Ive got a PIC driving a HT9200 DTMF generator, and I have it 
> > generating tones OK, but I don't see anything in the data 
> > sheet about controlling the duration of the tones itself?
> >   ie....how long the tone is actually active on the output 
> > before generating the next one.
> 
> 
> ME :)
> 
> IIRC there's an enable pin or some such. 
> I did some interface code for it
> http://www.dvanhorn.org/Downloads/HT9200.ASM
> 
> It's AVRish, but you shouldn't have any trouble reading it.
> 

	Have you observed a very annoying DC glitch at the HT9200 audio output 
when enabling/disabling the tones?

	Mark Jordan


-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist