copied over from safe_u1e

1 files changed, 41 insertions, 0 deletions

diff --git a/usrp2/top/u1e/u1e.v b/usrp2/top/u1e/u1e.v
new file mode 100644
index 000000000..e28a6a582
--- /dev/null
+++ b/usrp2/top/u1e/u1e.v
@@ -0,0 +1,41 @@
+`timescale 1ns / 1ps
+//////////////////////////////////////////////////////////////////////////////////
+
+module u1e
+  (
+   input CLK_FPGA_P, input CLK_FPGA_N,  // Diff
+   output [2:0] debug_led, output [31:0] debug, output [1:0] debug_clk,
+
+   // GPMC
+   input EM_CLK, inout [15:0] EM_D, input [10:1] EM_A,
+   input EM_WAIT0, input EM_NCS4, input EM_NWP, input EM_NWE, input EM_NOE, input EM_NADV_ALE
+   );
+
+   // FPGA-specific pins connections
+   wire  clk_fpga;
+   
+   IBUFGDS #(.IOSTANDARD("LVDS_33"), .DIFF_TERM("TRUE")) 
+   clk_fpga_pin (.O(clk_fpga),.I(CLK_FPGA_P),.IB(CLK_FPGA_N));
+
+   // Debug circuitry
+   reg [31:0] 	ctr;
+   always @(posedge clk_fpga)
+     ctr <= ctr + 1;
+
+   
+   assign debug_led = ctr[27:25];
+   assign debug_clk = { EM_CLK, clk_fpga };
+   assign debug = { { EM_WAIT0, EM_NADV_ALE, EM_NWP, EM_NCS4, EM_NWE, EM_NOE, EM_A[10:1] },
+		    { EM_D } };
+
+   wire 	EM_output_enable = (~EM_NOE & ~EM_NCS4);
+   wire [15:0] 	EM_D_out;
+
+   assign EM_D = EM_output_enable ? EM_D_out : 16'bz;
+
+   ram_2port #(.DWIDTH(16), .AWIDTH(10)) ram_2port
+     (.clka(clk_fpga), .ena(~EM_NCS4), .wea(~EM_NWE), .addra(EM_A), .dia(EM_D), .doa(EM_D_out),
+      .clkb(clk_fpga), .enb(0), .web(0), .addrb(0), .dib(0), .dob());
+   
+      
+endmodule // u2plus