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TDC core
Commit 8145c33e authored by Sebastien Bourdeauducq's avatar Sebastien Bourdeauducq
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demo: feedback through one IOB (optional)

parent eeaac8b0
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demo/boards/spec/rtl/system.v
View file @ 8145c33e
...@@ -18,6 +18,8 @@ ...@@ -18,6 +18,8 @@
`include "setup.v" `include "setup.v"
`define USE_FMC_DIO
module system( module system(
input clkin_p, input clkin_p,
input clkin_n, input clkin_n,
...@@ -41,7 +43,8 @@ module system( ...@@ -41,7 +43,8 @@ module system(
output [1:0] tdc_signal_oe_n, output [1:0] tdc_signal_oe_n,
output [1:0] tdc_signal_term_en, output [1:0] tdc_signal_term_en,
input [1:0] tdc_signal_p, input [1:0] tdc_signal_p,
input [1:0] tdc_signal_n input [1:0] tdc_signal_n,
inout dummy // unconnected FPGA pad
); );
//------------------------------------------------------------------ //------------------------------------------------------------------
...@@ -533,14 +536,33 @@ assign tdc_signal_term_en[0] = 1'b1; ...@@ -533,14 +536,33 @@ assign tdc_signal_term_en[0] = 1'b1;
IBUFDS ibuf_tdc_signal0( IBUFDS ibuf_tdc_signal0(
.I(tdc_signal_p[0]), .I(tdc_signal_p[0]),
.IB(tdc_signal_n[0]), .IB(tdc_signal_n[0]),
`ifdef USE_FMC_DIO
.O(tdc_signal[0]) .O(tdc_signal[0])
`else
.O()
`endif
); );
assign tdc_signal_oe_n[1] = 1'b1; assign tdc_signal_oe_n[1] = 1'b1;
assign tdc_signal_term_en[1] = 1'b1; assign tdc_signal_term_en[1] = 1'b1;
IBUFDS ibuf_tdc_signal1( IBUFDS ibuf_tdc_signal1(
.I(tdc_signal_p[1]), .I(tdc_signal_p[1]),
.IB(tdc_signal_n[1]), .IB(tdc_signal_n[1]),
`ifdef USE_FMC_DIO
.O(tdc_signal[1]) .O(tdc_signal[1])
`else
.O()
`endif
);
`ifndef USE_FMC_DIO
wire test_clk_delayed;
IOBUF d(
.T(1'b0),
.I(test_clk),
.O(test_clk_delayed),
.IO(dummy)
); );
assign tdc_signal = {test_clk, test_clk_delayed};
`endif
endmodule endmodule
demo/boards/spec/synthesis/common.ucf
View file @ 8145c33e
...@@ -28,6 +28,8 @@ NET "test_clk_oe_n" LOC = V17 | IOSTANDARD = "LVCMOS25"; ...@@ -28,6 +28,8 @@ NET "test_clk_oe_n" LOC = V17 | IOSTANDARD = "LVCMOS25";
NET "test_clk_p" LOC = W17 | IOSTANDARD = "LVDS_25"; NET "test_clk_p" LOC = W17 | IOSTANDARD = "LVDS_25";
NET "test_clk_n" LOC = Y18 | IOSTANDARD = "LVDS_25"; NET "test_clk_n" LOC = Y18 | IOSTANDARD = "LVDS_25";
NET "dummy" LOC = AA10 | IOSTANDARD = "LVCMOS25";
NET "tdc_signal_oe_n[0]" LOC = Y14 | IOSTANDARD = "LVCMOS25"; NET "tdc_signal_oe_n[0]" LOC = Y14 | IOSTANDARD = "LVCMOS25";
NET "tdc_signal_term_en[0]" LOC = AB5 | 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_p[0]" LOC = R11 | IOSTANDARD = "LVDS_25";
......
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