1 files changed, 0 insertions, 97 deletions
diff --git a/usrp/fpga/sdr_lib/ddc.v b/usrp/fpga/sdr_lib/ddc.v
deleted file mode 100755
index 0d4da9bbc..000000000
--- a/usrp/fpga/sdr_lib/ddc.v
+++ /dev/null
@@ -1,97 +0,0 @@
-// -*- verilog -*-
-//
-//  USRP - Universal Software Radio Peripheral
-//
-//  Copyright (C) 2003 Matt Ettus
-//
-//  This program is free software; you can redistribute it and/or modify
-//  it under the terms of the GNU General Public License as published by
-//  the Free Software Foundation; either version 2 of the License, or
-//  (at your option) any later version.
-//
-//  This program is distributed in the hope that it will be useful,
-//  but WITHOUT ANY WARRANTY; without even the implied warranty of
-//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//  GNU General Public License for more details.
-//
-//  You should have received a copy of the GNU General Public License
-//  along with this program; if not, write to the Free Software
-//  Foundation, Inc., 51 Franklin Street, Boston, MA  02110-1301  USA
-//
-
-
-
-// DDC block
-
-module ddc(input clock,
-			input reset,
-			input enable,
-			input [3:0] rate1,
-			input [3:0] rate2,
-			output strobe,
-			input [31:0] freq,
-			input [15:0] i_in,
-			input [15:0] q_in,
-			output [15:0] i_out,
-			output [15:0] q_out
-			);
-   parameter bw = 16;
-   parameter zw = 16;
-
-	wire [15:0] i_cordic_out, q_cordic_out;
-	wire [31:0] phase;
-
-	wire strobe1, strobe2;
-	reg [3:0] strobe_ctr1,strobe_ctr2;
-
-	always @(posedge clock)
-		if(reset | ~enable)
-			strobe_ctr2 <= #1 4'd0;
-		else if(strobe2)
-			strobe_ctr2 <= #1 4'd0;
-		else	
-			strobe_ctr2 <= #1 strobe_ctr2 + 4'd1;
-				
-	always @(posedge clock)
-		if(reset | ~enable)
-			strobe_ctr1 <= #1 4'd0;
-		else if(strobe1)
-			strobe_ctr1 <= #1 4'd0;
-		else if(strobe2)
-			strobe_ctr1 <= #1 strobe_ctr1 + 4'd1;
-				
-
-	assign strobe2 = enable & ( strobe_ctr2 == rate2 );
-	assign strobe1 = strobe2 & ( strobe_ctr1 == rate1 );
-
-	assign strobe = strobe1;
-
-	function [2:0] log_ceil;
-	input [3:0] val;
-	
-		log_ceil = val[3] ? 3'd4 : val[2] ? 3'd3 : val[1] ? 3'd2 : 3'd1; 
-	endfunction	
-	
-	wire [2:0] shift1 = log_ceil(rate1);
-	wire [2:0] shift2 = log_ceil(rate2);
-	
-	cordic #(.bitwidth(bw),.zwidth(zw),.stages(16))
-		cordic(.clock(clock), .reset(reset), .enable(enable),
-			.xi(i_in), .yi(q_in), .zi(phase[31:32-zw]), 
-			.xo(i_cordic_out), .yo(q_cordic_out), .zo()  );
-		
-	cic_decim_2stage #(.bw(bw),.N(4)) 
-		decim_i(.clock(clock),.reset(reset),.enable(enable),
-			.strobe1(1'b1),.strobe2(strobe2),.strobe3(strobe1),.shift1(shift2),.shift2(shift1),
-			.signal_in(i_cordic_out),.signal_out(i_out));
-			
-	cic_decim_2stage #(.bw(bw),.N(4)) 
-		decim_q(.clock(clock),.reset(reset),.enable(enable),
-			.strobe1(1'b1),.strobe2(strobe2),.strobe3(strobe1),.shift1(shift2),.shift2(shift1),
-			.signal_in(q_cordic_out),.signal_out(q_out));
-	
-	phase_acc #(.resolution(32))
-		nco (.clk(clock),.reset(reset),.enable(enable),
-			.freq(freq),.phase(phase));
-		
-endmodule