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//
// USRP2 - Universal Software Radio Peripheral Mk II
//
// Copyright (C) 2008 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
//
module cic_strober
#(parameter WIDTH=8)
( input clock,
input reset,
input enable,
input [WIDTH-1:0] rate, // Rate should EQUAL to your desired divide ratio, no more -1 BS
input strobe_fast,
output wire strobe_slow );
reg [WIDTH-1:0] counter;
wire now = (counter==1);
assign strobe_slow = now && enable && strobe_fast;
always @(posedge clock)
if(reset)
counter <= 0;
else if (~enable)
counter <= rate;
else if(strobe_fast)
if(now)
counter <= rate;
else
counter <= counter - 1;
endmodule // cic_strober
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