LPC2368 based PCB JTAG Problem

Hi All

I have recently finished LPC2368 based PCB. It is working fine apart from
strange fault with JTAG interface. When I try to program LPC2368 flash using
ULINK2 it mostly fail (not always). I have already googled to see if someone had
same problem but couldn't find suggestion that can sort out my problem.
sometimes error message is relating to time out and sometimes JTAG cable not
connected etc

I have already tried flash magic and it never caused any problem. I have also
connected it to regulated 3v3 power supply just in case some thing wrong with
PCB regulator. When i critically analyised LPC2368 layout, bypass capacitor
could be bit closer but i dont think that these are ridiculously far.

I will be very thankful if some one can help me


Cheers,

Mujahid

Hi

Upload your board schematic

All the best

Bobi