demo: enable terminations on FMC DIO

demo/boards/spec/rtl/system.v

@@ -37,6 +37,7 @@ module system(
 	output test_clk_p,
 	output test_clk_n,
 	output [1:0] tdc_signal_oe_n,
+	output [1:0] tdc_signal_term_en,
 	input [1:0] tdc_signal_p,
 	input [1:0] tdc_signal_n
 );
@@ -521,12 +522,14 @@ OBUFDS obuf_test_clk(
 );
 
 assign tdc_signal_oe_n[0] = 1'b1;
+assign tdc_signal_term_en[0] = 1'b1;
 IBUFDS ibuf_tdc_signal0(
 	.I(tdc_signal_p[0]),
 	.IB(tdc_signal_n[0]),
 	.O(tdc_signal[0])
 );
 assign tdc_signal_oe_n[1] = 1'b1;
+assign tdc_signal_term_en[1] = 1'b1;
 IBUFDS ibuf_tdc_signal1(
 	.I(tdc_signal_p[1]),
 	.IB(tdc_signal_n[1]),

demo/boards/spec/synthesis/common.ucf

@@ -27,10 +27,12 @@ NET "test_clk_p" LOC = W17 | IOSTANDARD = "LVDS_25";
 NET "test_clk_n" LOC = Y18 | IOSTANDARD = "LVDS_25";
 
 NET "tdc_signal_oe_n[0]" LOC = Y14 | IOSTANDARD = "LVCMOS25";
+NET "tdc_signal_term_en[0]" LOC = AB5 | IOSTANDARD = "LVCMOS25";
 NET "tdc_signal_p[0]" LOC = R11 | IOSTANDARD = "LVDS_25";
 NET "tdc_signal_n[0]" LOC = T11 | IOSTANDARD = "LVDS_25";
 
 NET "tdc_signal_oe_n[1]" LOC = W11 | IOSTANDARD = "LVCMOS25";
+NET "tdc_signal_term_en[1]" LOC = AB6 | IOSTANDARD = "LVCMOS25";
 NET "tdc_signal_p[1]" LOC = W12 | IOSTANDARD = "LVDS_25";
 NET "tdc_signal_n[1]" LOC = Y12 | IOSTANDARD = "LVDS_25";