Merge branch 'udp'

1 files changed, 34 insertions, 0 deletions

diff --git a/fpga/usrp2/models/serdes_model.v b/fpga/usrp2/models/serdes_model.v
new file mode 100644
index 000000000..f10e55554
--- /dev/null
+++ b/fpga/usrp2/models/serdes_model.v
@@ -0,0 +1,34 @@
+
+module serdes_model
+  (input ser_tx_clk,
+   input ser_tkmsb,
+   input ser_tklsb,
+   input [15:0] ser_t,
+   
+   output ser_rx_clk,
+   output ser_rkmsb,
+   output ser_rklsb,
+   output [15:0] ser_r,
+   
+   input even,
+   input error);
+   
+   wire [15:0] ser_r_odd;
+   wire  ser_rklsb_odd, ser_rkmsb_odd;   
+   
+   reg [7:0] hold_dat;
+   reg 	     hold_k;
+   
+   always @(posedge ser_tx_clk) hold_k <= ser_tklsb;
+   always @(posedge ser_tx_clk) hold_dat <= ser_t[15:8];
+   assign    ser_rklsb_odd = hold_k;
+   assign    ser_rkmsb_odd = ser_tklsb;
+   assign    ser_r_odd = {ser_t[7:0], hold_dat};
+   
+   // Set outputs
+   assign    ser_rx_clk = ser_tx_clk;
+   assign    ser_rkmsb = even ? ser_tkmsb : ser_rkmsb_odd;
+   assign    ser_rklsb = even ? ser_tklsb : ser_rklsb_odd;
+   assign    ser_r = error ^ (even ? ser_t : ser_r_odd);
+   
+endmodule // serdes_model