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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/control_lib/oneshot_2clk.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
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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.v52
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
-
-