Merge branch 'packet_router_2nd_dsp' into next

1 files changed, 24 insertions, 0 deletions

diff --git a/fpga/usrp2/fifo/fifo_pacer.v b/fpga/usrp2/fifo/fifo_pacer.v
new file mode 100644
index 000000000..1bf03ab6e
--- /dev/null
+++ b/fpga/usrp2/fifo/fifo_pacer.v
@@ -0,0 +1,24 @@
+
+
+module fifo_pacer
+  (input clk,
+   input reset,
+   input [7:0] rate,
+   input enable,
+   input src1_rdy_i, output dst1_rdy_o,
+   output src2_rdy_o, input dst2_rdy_i,
+   output underrun, overrun);
+
+   wire   strobe;
+   
+   cic_strober strober (.clock(clk), .reset(reset), .enable(enable),
+			.rate(rate), .strobe_fast(1), .strobe_slow(strobe));
+
+   wire   all_ready = src1_rdy_i & dst2_rdy_i;
+   assign dst1_rdy_o = all_ready & strobe;
+   assign src2_rdy_o = dst1_rdy_o;
+
+   assign underrun = strobe & ~src1_rdy_i;
+   assign overrun = strobe & ~dst2_rdy_i;
+   
+endmodule // fifo_pacer