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Re: [avr-chat] Mega128/jtagice problem.

From: Joerg Wunsch
Subject: Re: [avr-chat] Mega128/jtagice problem.
Date: Wed, 27 Jul 2005 17:25:46 +0200 (MET DST)

Andy Warner <address@hidden> wrote:

> It just doesn't come out of reset cleanly. Which is odd, because as
> I understand it the jtag-ice has to put the device in reset before
> it can program the flash..

Nope.  Normally, you can even leave the nSRST line disconnected.  It's
only really required if your application sets the JTD bit early (in
order to make the respective IO pins usable for standard IO), as
asserting /RESET and then immediately trying to start up the JTAG+
conversation is the way out of the dilemma there.  If you don't have
JTD set in your app, there's no need to force /RESET by the ICE.

J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/

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