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JTAG Interface on LPC-2478

Started by Jean-Jacques Dauchot August 25, 2010
Hi

Is it possible the use the JTAG interface signals pins as GPIO.
I do not use the JTAG.

I recall a while back that the is a way to disable the TRACE/JTAG functions in the chip

Regards

Jean-Jacques

An Engineer's Guide to the LPC2100 Series

Hi:

In the LPC2478 you cannot use the JTAG pins as GPIOs, as they are dedicated pins.

However, the TRACE pins are shared and can be used as GPIO. See PINSEL5 and PINSEL10 to disable the TRACE functionality.

Regards,

Alex.

--- In l..., "Jean-Jacques Dauchot" wrote:
>
> Hi
>
> Is it possible the use the JTAG interface signals pins as GPIO.
> I do not use the JTAG.
>
> I recall a while back that the is a way to disable the TRACE/JTAG functions in the chip
>
> Regards
>
> Jean-Jacques
>