ID:15555 PLL "<name>" has illegal LVDS data rate of <number> -- data rate must be between <number> and <number>

CAUSE: The specified PLL is feeding an LVDS receiver or transmitter and has the specified LVDS data rate. However, the specified data rate is illegal and must be in the specified range.

ACTION: Specify a legal LVDS data rate in the altlvds_rx, altlvds_tx or altpll megafunction. Or if you created the PLL manually, modify the VCO_MULTIPLY_BY and VCO_DIVIDE_BY parameters to specify a legal VCO frequency (which corresponds to the LVDS data rate). Alternatively, specify a faster speed grade device that supports the data rate that you want.