I can't connect to my DSP through the JTAG port. The message that CCS 
gives me is that it has lost the processor clock and the device is 
operating in low power mode. The clock signal going in is 20 MHz (pin 
90) and coming out of the XCLKOUT pin is 2.5 MHz initially. As soon as 
I try to connect through my JTAG device (Signum Systems JTAGJET - TMS), 
the XCLKOUT signal disappears. I've checked all connectivity between 
the JTAG header and the JTAG pins on the DSP and everything looks ok. 
Prior to connecting, I've run the JTAG autodetect and verify and it 
sees the device in the JTAG chain. I don't see any DSP resets or 
anything occuring while I'm try to connect. The silicon revision 
appears to be the same as on a previous generation board and I have no 
issues connecting to it (so it appears the my programmer is ok). 
GPIO18, 29 & 34 have been configured to boot from RAM. If anyone else 
has seen this before and knows what's going, your help would be much 
appreciated.
------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x
You can post a message or access and search the archives of this group on DSPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________

Hi,

I usually get same error when JTAG hangs up during debugging. Usually 
helps to reset (disconnect/connect) JTAG and target voltage then run 
Debug->Reset Emulator in CCS.

Sometimes I feel more like ghost buster than programmer when I work with 
TI CCS :)

cmackinnon44 napsal(a):
> I can't connect to my DSP through the JTAG port. The message that CCS
> gives me is that it has lost the processor clock and the device is
> operating in low power mode. The clock signal going in is 20 MHz (pin
> 90) and coming out of the XCLKOUT pin is 2.5 MHz initially. As soon as
> I try to connect through my JTAG device (Signum Systems JTAGJET - TMS),
> the XCLKOUT signal disappears. I've checked all connectivity between
> the JTAG header and the JTAG pins on the DSP and everything looks ok.
> Prior to connecting, I've run the JTAG autodetect and verify and it
> sees the device in the JTAG chain. I don't see any DSP resets or
> anything occuring while I'm try to connect. The silicon revision
> appears to be the same as on a previous generation board and I have no
> issues connecting to it (so it appears the my programmer is ok).
> GPIO18, 29 & 34 have been configured to boot from RAM. If anyone else
> has seen this before and knows what's going, your help would be much
> appreciated.

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x
You can post a message or access and search the archives of this group on DSPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________