[casper] Using "ten_GbE_v2" above 120MHz...

[Randy McCullough]

In the block documentation regarding use of the "ten_GbE_v2" block, 
there's no mention
of the requirement to clock data into the TX fifo on every other clock 
cycle when running
much above 120MHz.  I assume that this requirement, which was explained 
in the block
documentation for the original "ten_GbE" block, applies to v2 as well.  
Is this correct?

Thanks,
Randy