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authorJosh Blum <josh@joshknows.com>2010-11-23 13:50:37 -0800
committerJosh Blum <josh@joshknows.com>2010-11-23 13:50:37 -0800
commit30ce5acedd3e0dc6fc97d7597781a0a4828812f2 (patch)
tree28d010c0938121f587e1820849c34ee900e7f74b /fpga/usrp2/gpmc/edge_sync.v
parent8ce75a3ca7a51f4bdee87d78a610a0f2519473ae (diff)
parent13ae4786e091d5581baf31c9967dca822ef15e39 (diff)
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Merge branch 'usrp_e100' into next
Conflicts: images/Makefile
Diffstat (limited to 'fpga/usrp2/gpmc/edge_sync.v')
-rw-r--r--fpga/usrp2/gpmc/edge_sync.v22
1 files changed, 22 insertions, 0 deletions
diff --git a/fpga/usrp2/gpmc/edge_sync.v b/fpga/usrp2/gpmc/edge_sync.v
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+++ b/fpga/usrp2/gpmc/edge_sync.v
@@ -0,0 +1,22 @@
+
+
+module edge_sync
+ #(parameter POSEDGE = 1)
+ (input clk,
+ input rst,
+ input sig,
+ output trig);
+
+ reg [1:0] delay;
+
+ always @(posedge clk)
+ if(rst)
+ delay <= 2'b00;
+ else
+ delay <= {delay[0],sig};
+
+ assign trig = POSEDGE ? (delay==2'b01) : (delay==2'b10);
+
+endmodule // edge_sync
+
+