|ARM Technical Support Knowledge Articles|
Applies to: MCB2300 Evaluation Board
Information in this article applies to:
I have misprogrammed the LPC2368/LPC2378 device on my MCB2300 Board. I know that I can make a device unusable when I program a wrong PLL value or miss-programmed the JTAG pins. When I try to connect, always get:
JTAG Communication Failure
Is there a way to recover the device?
First, check to see if you can erase the device using ULINK by reducing the Max JTAG Clock under Project — Options — Debug — ULINK Settings to 100KHz. With ULINK2 you may use Max JTAG Clock: RTCK which uses the RTCK line for automatic clock adjustment.
If this fails, you must use the IAP loader using FlashMagic and a serial COM cable.
Article last edited on: 2007-03-27 11:15:41
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