Author Topic: JTAG for beginners :)  (Read 2792 times)

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Offline dds

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JTAG for beginners :)
« on: October 19, 2010, 07:07:07 pm »
How do I find  JTAG ports if they exist on a particular board? Should i probe points with multimeter or oscilloscope?

Thanks.

 

Offline djsb

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Re: JTAG for beginners :)
« Reply #1 on: October 19, 2010, 07:25:43 pm »
You could look for the data sheet for a particular device and look for the connections to the following pins

# TDI (Test Data In)
# TDO (Test Data Out)
# TCK (Test Clock)
# TMS (Test Mode Select)

This should give you a good start.
David
Hertfordshire,UK
 University Electronics Technician, London PIC,CCS C,Arduino,Kicad, Altium Designer,LPKF S103,S62 Operator, Electronics instructor.  http://debuggingrules.com/ Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime.
 


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