http://www.xilinx.com/support/answers/35171.htm
How to connect the following pins in my design?
CMPMISO
CMPMOSI
CMPCLK
CMPCS_B
CMPMISO - Reserved for future use. Use these pins as general-purpose I/O.
CMPMOSI - Reserved for future use. Use these pins as general-purpose I/O.
CMPCLK - Reserved for future use. Use these pins as general-purpose I/O.
CMPCS_B - Reserved. Leave unconnected or connect High (VCCO_2).