IR length info for non-xilinx devices?

[Renjith]

Hi All,
How to get the info of the IR length for non-xilinx devices which are present in the xilinx jtag chain. i need to use chipscope for probing one of the xilinx fpga. hence i need the IR lengths of all the devices in the jtag chain(there are a couple of non-xilinx devices in the jtag chain).

Thanx in advance

Rgds,
Renjith

 

[mmarco76]

You can usually find it in the datasheet of the components (in the jtag section).
If you can't find it there you need to open their jtag file and look at it.
I can't remember well it because It's about 2 years I don't took a Xilinx (and I'm happy about it)

 

[FvM]

The IR length can be identified by a JTAG tool automaticly. I would expect Xilinx to support this simple operation.