On 24/03/2011 15:50, alan.b.pearce@stfc.ac.uk wrote:
> I think the only bit of a JTAG interface that seems to have been remotely=
 standardised is the 10 pin ribbon cable connector pinout ...
>
> Everything else seems to depend on the manufacturer of both the chip and =
the test equipment.

And lots of products don't use that. Or even not the same pin order!

As Herbert said, you can have a perfectly good JTAG PC interface, even=20
with interchangeable cable tail, and the manufacturer's SW wants a=20
different PC interface.
--=20
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