JTAG emulator XDS510PP active LED

Started by eeh April 19, 2005
Hi,

I used JTAG emulator XDS510PP to connect to my target board which has a
TMS320C6711 DSP chip. However, the active LED on the emulator does not
turn on. I have measure the Power Present PD pin(Pin 5) of JTAG pin
header on the target board is 3.3V, and the GND pins are OK.

Do anyone know why this happens?

Thanks!

On 19 Apr 2005 07:20:22 -0700, "eeh" <eehobbyist@yahoo.com.hk> wrote
in comp.dsp:

> Hi, > > I used JTAG emulator XDS510PP to connect to my target board which has a > TMS320C6711 DSP chip. However, the active LED on the emulator does not > turn on. I have measure the Power Present PD pin(Pin 5) of JTAG pin > header on the target board is 3.3V, and the GND pins are OK. > > Do anyone know why this happens? > > Thanks!
The XDS510PP needs +5 volts to operate. You can power it from your target board if you have 5 volts on the target board and connect that to the power pin on the JTAG header. If you have 3.3 volts on the power pin of the JTAG header, you have to plug the external power supply, the one that comes with the emulator, in to power it. It only uses the 3.3 volts on the JTAG header power pin to tell when the target board is powered up or not. On the second spin of our boards, we put 5 volts on the JTAG power pin, since we had it on the board anyway. It made life much easier. -- Jack Klein Home: http://JK-Technology.Com FAQs for comp.lang.c http://www.eskimo.com/~scs/C-faq/top.html comp.lang.c++ http://www.parashift.com/c++-faq-lite/ alt.comp.lang.learn.c-c++ http://www.contrib.andrew.cmu.edu/~ajo/docs/FAQ-acllc.html