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TI JTAG programming protocol

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Binome

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Hi,
I'm trying to understand TI JTAG programming protocol.
I've a Stellaris LM3S2965 board and I'd like to create my own programmer but I don't know what JTAG instructions (and when) I have to send. Someone told me it's documented but I don't find anything on the web.
Do someone know where I can find it?
Thanks.
 

No, I've searched on ti.com because I thought I had to understand the board before the chip. I'm wrong?
 

I presume that Stellaris JTAG protocol is based on general Arm specifications which can be found at arm.com. It might be docmented at TI, too.
 

I'm searching but I don't find a document to precisely tell the procedure...
 

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