Lpc2000

>From: "tlarson_greatnotions" <tlarson@...>
>Reply-To: lpc2000@yahoogroups.com
>To: lpc2000@yahoogroups.com
>Subject: [lpc2000] LPC2214 - Need help getting JTAG interface to work.
>Date: Fri, 01 Oct 2004 23:38:28 -0000
>
>
>I have the Ashling development board and Opella tools.  I have
>followed ashling's recommendations for interfacing to the Opella
>JTAG/USB device in the app note on thier web.
>
>The CPU works fine in thier development board...  I have configured
>the development board to match mine as close as possible... The
>opella cable works fine with the dev board.
>So I know the tools are working.
>
>My board is very simple, mostly I/O to headers, and JTAG.  No Rs232.
>Unfortunately, I cannot get my board to work.  I do see the clock
>signals... X1/X2.
>
>I have RTCK pull down to Vss (45mv on RTCK). JTAG Pins go straight
>to the connector.  /Reset is held low for 30ms after power up.
>Rs232 Bootloader is disabled (4.7K pullup to 3.3V).
>
>On the Ashling board, TDO is low, on mine it is 2.26V.  This leads
>me to believe I don't have JTAG turned on, but the default pull-up
>is enabled on this board.


Check your board against the schematics on my web site. My board definitely 
works, with both a genuine Wiggler and my own version of it.

Leon
--
Leon Heller, G1HSM Tel: +44 1424 423947
Email: aqzf13 at dsl dot pipex dot com
WWW: http://www.geocities.com/leon_heller