Lpc2000

----- Original Message ----- 
From: "James Dabbs" <jdabbs@...>
To: <lpc2100@yahoogroups.com>
Sent: Monday, December 22, 2003 2:17 PM
Subject: RE: [lpc2100] LPC2106 Samples


> I've got two (naive) questions..
>
> 1. The LPC2106 seems to have two sets of JTAG pins, which can be
> selected by using the alternative function pin definition bits.  How
> does this work?  Emulation happens during reset, before anything is
> programmed.  How does the designed specify which pins to use?  Just
> pointing me to the right place in the users manual will be great.

I use pins 1,2,3,4, 47 and 48 - works fine with the Wiggler and both the
OCDemon software and the RAL debugger.

>
> 2. I've seen a few messages implying that this interface is not as
> simple as putting a connector on the board and running traces to the
> pins on the part.  Is there a good example of *how* you need to design
> the target board to get JTAG emulation to work correctly?

The Wiggler interface is supported by the RAL software I use.

Leon
--
Leon Heller, G1HSM
Email: aqzf13@...
My low-cost Philips LPC210x ARM development system:
http://www.geocities.com/leon_heller/lpc2104.html