> I have seen a number of products that are used for JTAG boundary scans. I'm
> am always surprised at the cost since JTAG is conceptually simple and does
> not require much hardware.
>
> Are there low cost, bench products out there? I'm thinking less than $1000?
>
> --
> Al Clark
> Danville Signal Processing, Inc.
> --------------------------------------------------------------------
> Purveyors of Fine DSP Hardware and other Cool Stuff
> Available at http://www.danvillesignal.com
JTAG Technologies (http://www.jtag.com) offer a scan function library
(c based development routines) which work at the SCAN-IR, SCAN DR level
for free with any hardware controller purchased. I think a basic
hardware controller costs about 500 quid. If your wanting to write your
own
code for testing or accessing internal registers then this is the way
to go. The costly element in most of these systems
is the auto test program generator stuff which parses the board
netlists and BSSDL models to create boards tests. If it is just simple
pin access via boundary-scan that you're after there is another product
from Universal Scan (http://www.universalscan.com) that is a better
bet (and cheaper) that the XTAG system I think.
Reply by Didi●December 11, 20062006-12-11
> Of course you have some software work to do...
Indeed he will have, but not that much (given that all he needs to
learn in this
context is only JTAG related). I did it a few years back and I don't
remember
spending a lot of time on it (a week or so). [ However, I did it with
everything
under my control (no outside software involved at all), which is pretty
unleashing (once you are that far ...)]
A major problem he may encounter is the fact that many (all?) silicon
manufacturers keep much of the JTAG accessible stuff inside their chips
secret, hence the high prices for the tools - thus they just filter
out the small
potential users for whatever reason they may want (or have to?) to do
it.
If just boudary scan is the purpose, that will work, BSDL files are
public (those I have needed were, at least).
Dimiter
------------------------------------------------------
Dimiter Popoff Transgalactic Instruments
http://www.tgi-sci.com
------------------------------------------------------
cs_posting@hotmail.com wrote:
> Al Clark wrote:
> > I have seen a number of products that are used for JTAG boundary scans. I'm
> > am always surprised at the cost since JTAG is conceptually simple and does
> > not require much hardware.
> >
> > Are there low cost, bench products out there? I'm thinking less than $1000?
>
> What's a DB25-M go for these days?
>
> (If you are really cheap, you can just fold over the ends of the wires
> and shove them in the parallel port)
>
> Of course you have some software work to do...
Reply by ●December 11, 20062006-12-11
Al Clark wrote:
> I have seen a number of products that are used for JTAG boundary scans. I'm
> am always surprised at the cost since JTAG is conceptually simple and does
> not require much hardware.
>
> Are there low cost, bench products out there? I'm thinking less than $1000?
What's a DB25-M go for these days?
(If you are really cheap, you can just fold over the ends of the wires
and shove them in the parallel port)
Of course you have some software work to do...
Reply by Ignacio G.T.●December 11, 20062006-12-11
Al Clark escribi�:
> I have seen a number of products that are used for JTAG boundary scans. I'm
> am always surprised at the cost since JTAG is conceptually simple and does
> not require much hardware.
>
> Are there low cost, bench products out there? I'm thinking less than $1000?
You can have XJLink (hardware) and XJAPI (C libraries) for 1,200 �. The
GUIs are much more expensive but, in theory, you could make your own
GUIs with XJAPI. I use XJLink & XJAPI & my own VisualC++ programs to
program Flash memories via XJTAG-capable processors inside proprietary
boards, and it works fine. See http://www.xjtag.com
Reply by Al Clark●December 7, 20062006-12-07
I have seen a number of products that are used for JTAG boundary scans. I'm
am always surprised at the cost since JTAG is conceptually simple and does
not require much hardware.
Are there low cost, bench products out there? I'm thinking less than $1000?
--
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com