JTAG for SHARC/Blackfin from EZ-KIT Lite ?

Hi,

Has anyone ever managed to use the onbard USB-based debugger interface
of the EZ-KIT Lite to debug an other board ?

I am wondering what it takes to make this work. Maybe just directly
using the TDI TDO TCK TMS TRST lines of the EZ-KIT Lite ?
There might be a kind of protection though ? or maybe not ... ?

ADI provides the schematics for the EZ-KIT Lites, but of course, the
USB part of it is not there. Start a New Thread

On Sat, 20 Sep 2008, audi0m0nster wrote:

> Hi,
>
> Has anyone ever managed to use the onbard USB-based debugger interface
> of the EZ-KIT Lite to debug an other board ?
>
> I am wondering what it takes to make this work. Maybe just directly
> using the TDI TDO TCK TMS TRST lines of the EZ-KIT Lite ?
> There might be a kind of protection though ? or maybe not ... ?
>
> ADI provides the schematics for the EZ-KIT Lites, but of course, the
> USB part of it is not there.

If you break the connections to the EZ-kit and route the jtag lines to the
other board it should work. The main trick is noise. If you can scope
the lines on the ezkit before you break them, you can get an idea of the
noise limit you need to reach. If the signals going into (and out of)
your board are as clean as the ezkit, all the software can't tell the
difference.

But jtag is finicky, so it's not trivial.

Patience, persistence, truth,
Dr. mike Start a New Thread