openofdm/verilog/usrp2/setting_reg.v

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2017-04-03 16:52:03 +00:00
//
// 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 setting_reg
#(parameter my_addr = 0,
parameter width = 32,
parameter at_reset=32'd0)
(input clk, input rst, input strobe, input wire [7:0] addr,
input wire [31:0] in, output reg [width-1:0] out, output reg changed);
always @(posedge clk)
if(rst)
begin
out <= at_reset;
changed <= 1'b0;
end
else
if(strobe & (my_addr==addr))
begin
out <= in;
changed <= 1'b1;
end
else
changed <= 1'b0;
endmodule // setting_reg