[Commit-gnuradio] r10729 - gnuradio/trunk/usrp2/fpga/simple_gemac

[matt]

Author: matt
Date: 2009-03-31 20:26:19 -0600 (Tue, 31 Mar 2009)
New Revision: 10729

Added:
   gnuradio/trunk/usrp2/fpga/simple_gemac/delay_line.v
Log:
variable length delay line, based on srl16


Added: gnuradio/trunk/usrp2/fpga/simple_gemac/delay_line.v
===================================================================
--- gnuradio/trunk/usrp2/fpga/simple_gemac/delay_line.v                         
(rev 0)
+++ gnuradio/trunk/usrp2/fpga/simple_gemac/delay_line.v 2009-04-01 02:26:19 UTC 
(rev 10729)
@@ -0,0 +1,21 @@
+
+
+module delay_line
+  #(parameter WIDTH=32)
+   (input clk,
+    input [3:0] delay,
+    input [WIDTH-1:0] din,
+    output [WIDTH-1:0] dout);
+    
+   integer i;
+   generate
+      for (i=0;i<WIDTH;i=i+1)
+       begin : gen_delay
+          SRL16E
+            srl16e(.Q(dout[i]),
+                   .A0(delay[0]),.A1(delay[1]),.A2(delay[2]),.A3(delay[3]),
+                   .CE(1),.CLK(clk),.D(din[i]));
+       end
+   endgenerate
+
+endmodule // delay_line