AD9283 Expansion module

Hi,

I have the Mimas V2 and the AD9283 expansion module.

I hooked them up to the two left most ports (P6 and P7) on the Mimas and proceeded to clock in the offset binary data according to the manuals, however I didn't get it to work. Playing around I found that if I invert the pin assignments as reported in the AD9283 manual it works as expected. Comment?

Code:

--Input register for the ADC data
register8: reg8      port map(  reg_in  => IO_P7,
                                LD      => '1',
                                CLK     => clk_12mhz,
                                         reg_out => input_number
                                     );
                                         
--Light up the appropriate segment
sevensegmentenable <= selected_seg;
--Hook up bcd decoder to segments
sevensegment       <= ss_out;
--Enable the clock divider
enable             <= '1';
--Hook up the LEDs to the raw ADC output
LED                <= input_number;
--ADC encode input (Pin3 according to manual but P6(4) is Pin4 in the .ucf)
IO_P6(4)           <= clk_12mhz;
--ADC pwrdwn signal (Pin4 according to manual but P6(5) is Pin3 in the .ucf)
IO_P6(5)           <= DIP_1;
--Set the rest to LO as they're NC.
IO_P6(7 downto 6)  <= "00";
IO_P6(3 downto 0)  <= "0000";