Lpc2000

Hi Kirsti,

you found a flaw in the User Manual pin description, sorry one of the
cut and paste errors.  Will be changed but might take a few weeks
until visible on the WWW.

The DBGSEL is a dedicated pin on the LPC2104/5/6 but entering debug
mode on the LPC2114 (all 64-pin devices) is different. Please check
the description of pins 1.20 and 1.26 in the data sheet. This
functionality replaces the DBGSEL pin.

Forcing RTCK low is necessary to enter debug mode.

The other answer whether you can use the JTAG pins for GP I/O if not
in debug mode, Yes you can, but think about it wheteher you really
want to do this. no more debugging of this functionality.

We decided (with some headache) to enable I/O on JTAG pins while not
in debug mode. 

Regards, Robert

--- In lpc2000@yahoogroups.com, kiaa@n... wrote:
> 
> 
> 
> 
> Hello group!
> 
> I am working on a design with LPC2114 and I want to use the MULTI
> development environment for
> the device.
> I have connected the JTAG signals and the RTCK to a 20-pins connector,
> ref. the ARM 20-pins connector refered to by Green Hills.
> 
> There are a few questions I want to put before the group:
> - Is correct to force the RTCK signal low via 4.7 ohm resistor to enable
> the debug port?
> 
> - The DBGSEL signal is described in the LPC2114/2124/2212/2214
manual, but
> I can not find it on the LPC2114.
> - Can I use the debug/Jtag signal for other purposes when the debug
bus is
> disabled?
> 
> - Does anybody have any experience with the LPC2000 and MULTI
environment?
> 
> Best regards
> Kirsti