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authorMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
committerMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
commitfd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch)
tree3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp2/sdr_lib/rx_dcoffset.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
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Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/sdr_lib/rx_dcoffset.v')
-rw-r--r--fpga/usrp2/sdr_lib/rx_dcoffset.v58
1 files changed, 0 insertions, 58 deletions
diff --git a/fpga/usrp2/sdr_lib/rx_dcoffset.v b/fpga/usrp2/sdr_lib/rx_dcoffset.v
deleted file mode 100644
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--- a/fpga/usrp2/sdr_lib/rx_dcoffset.v
+++ /dev/null
@@ -1,58 +0,0 @@
-//
-// Copyright 2011 Ettus Research LLC
-//
-// 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 3 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, see <http://www.gnu.org/licenses/>.
-//
-
-
-
-module rx_dcoffset
- #(parameter WIDTH=16,
- parameter ADDR=8'd0,
- parameter alpha_shift=20)
- (input clk, input rst,
- input set_stb, input [7:0] set_addr, input [31:0] set_data,
- input [WIDTH-1:0] in, output [WIDTH-1:0] out);
-
- wire set_now = set_stb & (ADDR == set_addr);
-
- reg fixed; // uses fixed offset
- wire [WIDTH-1:0] fixed_dco;
-
- localparam int_width = WIDTH + alpha_shift;
- reg [int_width-1:0] integrator;
- wire [WIDTH-1:0] quantized;
-
- always @(posedge clk)
- if(rst)
- begin
- fixed <= 0;
- integrator <= {int_width{1'b0}};
- end
- else if(set_now)
- begin
- fixed <= set_data[31];
- if(set_data[30])
- integrator <= {set_data[29:0],{(int_width-30){1'b0}}};
- end
- else if(~fixed)
- integrator <= integrator + {{(alpha_shift){out[WIDTH-1]}},out};
-
- round_sd #(.WIDTH_IN(int_width),.WIDTH_OUT(WIDTH)) round_sd
- (.clk(clk), .reset(rst), .in(integrator), .strobe_in(1'b1), .out(quantized), .strobe_out());
-
- add2_and_clip_reg #(.WIDTH(WIDTH)) add2_and_clip_reg
- (.clk(clk), .rst(rst), .in1(in), .in2(-quantized), .strobe_in(1'b1), .sum(out), .strobe_out());
-
-endmodule // rx_dcoffset