1 files changed, 80 insertions, 0 deletions
diff --git a/fpga/usrp2/serdes/serdes.v b/fpga/usrp2/serdes/serdes.v
new file mode 100644
index 000000000..edbc46419
--- /dev/null
+++ b/fpga/usrp2/serdes/serdes.v
@@ -0,0 +1,80 @@
+//
+// 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/>.
+//
+
+
+// SERDES TX and RX along with all flow control logic
+
+module serdes
+  #(parameter TXFIFOSIZE = 9,
+    parameter RXFIFOSIZE = 9)
+    (input clk, input rst,
+     // TX side
+     output ser_tx_clk, output [15:0] ser_t, output ser_tklsb, output ser_tkmsb,
+     input [31:0] rd_dat_i, input [3:0] rd_flags_i, output rd_ready_o, input rd_ready_i,
+     // RX side
+     input ser_rx_clk, input [15:0] ser_r, input ser_rklsb, input ser_rkmsb,
+     output [31:0] wr_dat_o, output [3:0] wr_flags_o, output wr_ready_o, input wr_ready_i,
+
+     output [15:0] tx_occupied, output tx_full, output tx_empty,
+     output [15:0] rx_occupied, output rx_full, output rx_empty,
+
+     output serdes_link_up,
+     
+     output [31:0] debug0, 
+     output [31:0] debug1);
+
+   wire [15:0] fifo_space;
+   wire        xon_rcvd, xoff_rcvd, inhibit_tx, send_xon, send_xoff, sent;
+   wire [31:0] debug_rx, debug_tx;
+
+   serdes_tx #(.FIFOSIZE(TXFIFOSIZE)) serdes_tx
+     (.clk(clk),.rst(rst),
+      .ser_tx_clk(ser_tx_clk),.ser_t(ser_t),.ser_tklsb(ser_tklsb),.ser_tkmsb(ser_tkmsb),
+      .rd_dat_i(rd_dat_i),.rd_flags_i(rd_flags_i),.rd_ready_o(rd_ready_o),.rd_ready_i(rd_ready_i),
+      .inhibit_tx(inhibit_tx), .send_xon(send_xon), .send_xoff(send_xoff), .sent(sent),
+      .fifo_occupied(tx_occupied),.fifo_full(tx_full),.fifo_empty(tx_empty),
+      .debug(debug_tx) );
+   
+   serdes_rx #(.FIFOSIZE(RXFIFOSIZE)) serdes_rx
+     (.clk(clk),.rst(rst),
+      .ser_rx_clk(ser_rx_clk),.ser_r(ser_r),.ser_rklsb(ser_rklsb),.ser_rkmsb(ser_rkmsb),
+      .wr_dat_o(wr_dat_o),.wr_flags_o(wr_flags_o),.wr_ready_o(wr_ready_o),.wr_ready_i(wr_ready_i),
+      .fifo_space(fifo_space), .xon_rcvd(xon_rcvd), .xoff_rcvd(xoff_rcvd),
+      .fifo_occupied(rx_occupied),.fifo_full(rx_full),.fifo_empty(rx_empty),
+      .serdes_link_up(serdes_link_up), .debug(debug_rx) );
+
+   serdes_fc_tx serdes_fc_tx
+     (.clk(clk),.rst(rst),
+      .xon_rcvd(xon_rcvd),.xoff_rcvd(xoff_rcvd),.inhibit_tx(inhibit_tx) );
+
+   serdes_fc_rx #(.LWMARK(32),.HWMARK(128)) serdes_fc_rx
+     (.clk(clk),.rst(rst),
+      .fifo_space(fifo_space),.send_xon(send_xon),.send_xoff(send_xoff),.sent(sent) );
+
+   //assign      debug = { fifo_space, send_xon, send_xoff, debug_rx[13:0] };
+   //assign      debug = debug_rx;
+
+   assign      debug0 = { { 2'b00, rd_ready_o, rd_ready_i, rd_flags_i[3:0]},
+			  { debug_tx[5:4] /* full,empty */ , inhibit_tx, send_xon, send_xoff, sent, ser_tkmsb, ser_tklsb},
+			  { ser_t[15:8] },
+			  { ser_t[7:0] } };
+   
+   assign      debug1 = { { debug_rx[7:0] }, /*  odd,xfer_active,sop_i,eop_i,error_i,state[2:0] */
+			  { wr_flags_o[1:0], wr_ready_i, wr_ready_o,  xon_rcvd, xoff_rcvd, ser_rkmsb, ser_rklsb },
+			  { ser_r[15:8] },
+			  { ser_r[7:0] } };
+endmodule // serdes