Hi Eric,
Did you verify the EVM jumpers are set to the default positions? See table 1 in the user's guide (link below). Keep JP14 set to offset binary / LVDS.
http://www.ti.com/lit/ug/slau477/slau477.pdf
Is there anyway you could check the EVM again using the TSW1200 you mentioned?
Regards,
Matt Guibord