COMPATIBILITY OF STANDARD 20 PIN HJTAG WITH 14 PIN JTAG

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1

Hi,

we are working on beagleboard revc2 on a project
we want to use 14 pin JTAG on board for programming/debugging, but we
have 20 pin standard
H-JTAG.can anyone please give us detail how to interface 20 pin HJTAG
with 14 pin JTAG on-board header...what does these
JTAG_RTCK,JTAG_EMU0,JTAG_EMU1 on HJTAG refers to??
What are the corresponding pins on standard HJTAG ??
following is the pin description for standard HJTAG

http://imageupload.org/?d=4D7F13C51

Thank You.

2

balaji chethan wrote:

Hi,

we are working on beagleboard revc2 on a project
we want to use 14 pin JTAG on board for programming/debugging, but we
have 20 pin standard
H-JTAG.can anyone please give us detail how to interface 20 pin HJTAG
with 14 pin JTAG on-board header...what does these
JTAG_RTCK,JTAG_EMU0,JTAG_EMU1 on HJTAG refers to??
What are the corresponding pins on standard HJTAG ??
following is the pin description for standard HJTAG

NameBright - Coming Soon

http://www.google.com/search?q=14pin+jtag+to+20pin+jtag

3

That is a question I was wrangling with too!

The google search lead me to the ARM 20-Pin JTAG Adapter Kit for about
$19

Does anyone know if that will work with the ARM-USB-OCD Olimex JTAG.

I did a little googling on the subject recently but couldn't figure it
out.