Keil forum JTAG Communication Failure

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JTAG Communication Failure

Max K over 18 years ago

MCB2300 Vers.3
JTAG - ULINK2 (An ARM Company)
uVision3 v.3.34

Standart sample project.
When I trying to Download Flash.. get error ULINK ARM Error JTAG Communication Failure

Max JTAG Clock sets 200kHz
What's problem?

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0 Suvidh Kankariya over 18 years ago in reply to Max K

Are you using UART0 of the board. If so check for the reset through handshake signal jumper. If the jumper is on it may reset your micro.

Suvidh
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0 Suvidh Kankariya over 18 years ago in reply to Max K

Are you using UART0 of the board. If so check for the reset through handshake signal jumper. If the jumper is on it may reset your micro.

Suvidh
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0 Max K over 18 years ago in reply to Suvidh Kankariya

Is null modem cable enough for chip configuration?
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0 Max K over 18 years ago in reply to Max K

We made all actions you recomended to us. But nothing changed.

We connect JTAG to the board(MCB2300), the switch power on. In "Options for target"->"Debug"->"Settings (ULINK ARM Debuger)", "JTAG Device Chain" group box shows a message "JTAG Communication failure". Whats the problem?
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0 Keil Software Support Intl. over 18 years ago in reply to Max K

This error happens when the JTAG pins do not react at all. ULINK cannot even access the Device ID in this case.
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