How do I estimate power in Spartan XL? What is the K factor value?
See the Power Solutions page for power estimation guidelines and tools:
Download the XPE Spreadsheet for the family you want to use. This page also contains links to Power Estimator guides and White Papers.
To estimate power in Spartan XL, use XBRF014 for the XC4000:
The K for Spartan XL is 11. Use this value when making the power calculation described in the XBRF014 application brief.