diff options
author | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
---|---|---|
committer | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
commit | fd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch) | |
tree | 3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp2/control_lib/oneshot_2clk.v | |
parent | 3b66804e41891e358c790b453a7a59ec7462dba4 (diff) | |
download | uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.gz uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.bz2 uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.zip |
Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/control_lib/oneshot_2clk.v')
-rw-r--r-- | fpga/usrp2/control_lib/oneshot_2clk.v | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/fpga/usrp2/control_lib/oneshot_2clk.v b/fpga/usrp2/control_lib/oneshot_2clk.v deleted file mode 100644 index 7ed5bc8f6..000000000 --- a/fpga/usrp2/control_lib/oneshot_2clk.v +++ /dev/null @@ -1,52 +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/>. -// - - -// Retime a single bit from one clock domain to another -// Guarantees that no matter what the relative clock rates, if the in signal is high for at least -// one clock cycle in the clk_in domain, then the out signal will be high for at least one -// clock cycle in the clk_out domain. If the in signal goes high again before the process is done -// the behavior is undefined. No other guarantees. Designed for passing reset into a new -// clock domain. - -module oneshot_2clk - (input clk_in, - input in, - input clk_out, - output reg out); - - reg del_in = 0; - reg sendit = 0, gotit = 0; - reg sendit_d = 0, gotit_d = 0; - - always @(posedge clk_in) del_in <= in; - - always @(posedge clk_in) - if(in & ~del_in) // we have a positive edge - sendit <= 1; - else if(gotit) - sendit <= 0; - - always @(posedge clk_out) sendit_d <= sendit; - always @(posedge clk_out) out <= sendit_d; - - always @(posedge clk_in) gotit_d <= out; - always @(posedge clk_in) gotit <= gotit_d; - -endmodule // oneshot_2clk - - |