AVR-Chat

Hi All,
FWIW, I have been using JTAG ICE and JTAGICE-MkII for a number of years with
little or no problems.

One things that I have not seen mentioned already is that the JTAG clock
frequency must exceed 1/4 of the  CPU/Xtal freq.
In all random 'disconnects' that I remember they have been due to forgetting
to set the JTAG clock  freq in AVR Studio

HTH
Ivan Vernot

> -----Original Message-----
> From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
> Of Dennis Clark
> Sent: Friday, 25 January 2008 7:56 AM
> To: AVR-Chat@yahoogroups.com
> Subject: Re: [AVR-Chat] Atmel JTAG-ICE MkII
> 
>   I'm in the same boat.  The JTAG_ICE doesn't work with most AVR's I use,
> and won't work with the ones it is supposed to work with...  Grr.
> 
> DLC
> 
> > What's the secret to the JTAG-ICE.  I've had one for several years but
> > haven't used it because it never wants to connect consistently.  I'm now
> > on a project where it would be really nice to use but the silly thing
> > won't talk to my ATmega128.  I've programmed the JTAG fuse, what else am
> I
> > missing?
> >
> > Regards,
> >
> >
> > Tim Gilbert
> > JEM Innovation Inc.
> > 303-926-9053 (office)
> > 303-437-4342 (cell)
> > 720-890-8582 (fax)
> > www.jeminnovation.com
> > www.pdksolutions.com
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> --
> Dennis Clark
> TTT Enterprises
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
>