diff options
| author | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
|---|---|---|
| committer | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
| commit | 5d69a524f81f234b3fbc41d49ba18d6f6886baba (patch) | |
| tree | b71312bf7f1e8d10fef0f3ac6f28784065e73e72 /usrp/fpga/sdr_lib/gen_sync.v | |
Houston, we have a trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'usrp/fpga/sdr_lib/gen_sync.v')
| -rw-r--r-- | usrp/fpga/sdr_lib/gen_sync.v | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/usrp/fpga/sdr_lib/gen_sync.v b/usrp/fpga/sdr_lib/gen_sync.v new file mode 100644 index 0000000000..d72b39d56e --- /dev/null +++ b/usrp/fpga/sdr_lib/gen_sync.v @@ -0,0 +1,43 @@ +// -*- 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +// + +module gen_sync + ( input clock, + input reset, + input enable, + input [7:0] rate, + output wire sync ); + +// parameter width = 8; + + reg [7:0] counter; + assign sync = |(((rate+1)>>1)& counter); + + always @(posedge clock) + if(reset || ~enable) + counter <= #1 0; + else if(counter == rate) + counter <= #1 0; + else + counter <= #1 counter + 8'd1; + +endmodule // gen_sync + |