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JTAG Communication failure

nirav patel

Hi all, i am using MCB 2140 board for ARM7. Although driver is installed for ULINK,when i start debugging the program it will show JTAG communication failure? cam someboady help me on this problem?

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    Same problem with my uncle's board MCB2140 using ULINK2. Communication with ULINK2 debuger is seems to be working.
    I get info about debuger when it is disconnected from board. I couldn't even use LPC2000 flash utility. Just after i've cleared flash with Hyper Terminal as described here I've finnaly got communication with LPC2000 Utility. But i still can't use Ulink2. Please Help.
    My current jumper layout is: All jumpers are closed except J1 and J8. Is this correct?

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    Same problem with my uncle's board MCB2140 using ULINK2. Communication with ULINK2 debuger is seems to be working.
    I get info about debuger when it is disconnected from board. I couldn't even use LPC2000 flash utility. Just after i've cleared flash with Hyper Terminal as described here I've finnaly got communication with LPC2000 Utility. But i still can't use Ulink2. Please Help.
    My current jumper layout is: All jumpers are closed except J1 and J8. Is this correct?

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