Lpc2000

No, there is no such way. If the bootloader finds the value 0x87654321 at 
address 0x1fc, it leaves the JTAG pins configured as GPIO, and they can't be 
used for JTAG.

Regards,

Dominic

On Wednesday 26 April 2006 09:14, Herbert Demmel wrote:
> Hi guys,
>
> as I could not find the appropriate information in the manual I ask this
> question to the community:
>
> If I have a (e.g.) LPC2148 device with CRP (0x1FC set to 0x8765 4321), it
> is still possible to re-program the device by completely erasing it before
> re-programming it via the serial port, I assume.
>
> But: If the device has CRP, the JTAG port is disabled as per spec, so it
> seems to be impossible to re-program the device via JTAG port.
>
> Please tell me if I'm right with my assumption or if there is some work
> around to erase/re-program a device via the JTAG pins only when CRP is set.
>
> Regards
> Herbert