On Mar 3, 2014, at 11:00 AM, Robert Jarratt <robert.jarratt at ntlworld.com> wrote:
I need to buy a JTAG cable for programming a Spartan 3
and a Spartan 6 FPGA.
I already have this one:
http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,523
<http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,523&Prod=JTAG-
USB> &Prod=JTAG-USB for the Spartan 3, but it does not fit the 2x7 connector
on the Spartan 6 board. It looks like I need to buy either this one:
http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,922
<http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,922&Prod=JTAG-
HS1> &Prod=JTAG-HS1 or this one:
http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,716
<http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,716&Prod=XUP-U
SB-JTAG> &Prod=XUP-USB-JTAG. I am not sure I understand the difference
between them, what would I be getting extra if I bought the more expensive
one?
I have both the JTAG-HS1 and the XUP-USB-JTAG. I wasn't sure which one I really
needed so I ended up with both. I use the JTAG-HS1 almost exclusively.
The XUP-USB-JTAG could be more useful in certain situations where the JTAG probe
points don't line up sufficiently well to use the JTAG-HS1. If you're designing a
board,
the cable pinout is compatible with Xilinx's platform cable description.
TTFN - Guy