Search how to make a jtag interface for my comag FTA 2ci???

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Hi,
I would like to make a jtag interface for my comag FTA 2ci because is completely death so I need to jtag it(I have plug out it when the firmware was downloading so the display show nothing even a "-")

It's impossible to find on the net how to make it for a comag?:wüt:

Can you help me please?

Thanks,
bye

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

If you know what Processor is build in, you can look in the Datasheet. There is normally shown how the Processor have to be programmed.

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

Hi,

It's a STI5518!

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

http://212.90.96.3/~aj/STI5518.PDF
At least the Pinout of the JTAG is in the File

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

Hi,
Thanks for the links!
I don't know how to do for the rest!
Can I send you a pic to show exactly my stb system(It use a STI5518BVC-X and 39vf800a).
I have seen a simple jtag interface for comag sl55(with resistors only) but it's completely different!It also use a STI5518 but the pin connections are different.

Thanks,
bye

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

I don't know very mutch about JTAG Interfaces (specially for this single Device), only that they are for Programming and debugging
So i think i can't help you on this Question, sorry.

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

Maybe here you can find something:
http://www.electronics-lab.com/forum/index.php?board=12;action=display;threadid=182

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

Hi,
I have find how to make my jtag but now I have an other problem!
When a use jkeys it's write " Error reading from IRD(DCU peek)"!

Can you help me?
thanks,
bye

 

AW: Search how to make a jtag interface for my comag FTA 2ci???

Sorry, i have no idea.