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+//
+// Copyright 2011-2012 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/>.
+//
+
+// PAD to NUM LINES
+
+module resp_packet_padder36
+#(
+ parameter NUM_LINES32 = 128
+)
+(
+ input clk, input reset,
+
+ //input interface
+ input [35:0] data_i,
+ input src_rdy_i,
+ output dst_rdy_o,
+
+ //output interface
+ output [35:0] data_o,
+ output src_rdy_o,
+ input dst_rdy_i
+);
+
+ localparam STATE_FWD = 0;
+ localparam STATE_PAD = 1;
+ reg state;
+
+ reg [15:0] counter;
+
+ always @(posedge clk) begin
+ if (reset) begin
+ counter <= 0;
+ end
+ else if (src_rdy_o && dst_rdy_i) begin
+ if (data_o[33]) counter <= 0;
+ else counter <= counter + 1;
+ end
+ end
+
+ always @(posedge clk) begin
+ if (reset) begin
+ state <= STATE_FWD;
+ end
+ else case(state)
+
+ STATE_FWD: begin
+ if (src_rdy_i && dst_rdy_o && data_i[33] && ~data_o[33]) begin
+ state <= STATE_PAD;
+ end
+ end
+
+ STATE_PAD: begin
+ if (src_rdy_o && dst_rdy_i && data_o[33]) begin
+ state <= STATE_FWD;
+ end
+ end
+
+ endcase //state
+ end
+
+ //assign data out
+ assign data_o[31:0] = (state == STATE_FWD)? data_i[31:0] : {32'b0};
+ wire eof = (counter == (NUM_LINES32-1));
+ assign data_o[35:32] = {data_i[35:34], eof, data_i[32]};
+
+ //assign ready
+ assign src_rdy_o = (state == STATE_FWD)? src_rdy_i : 1'b1;
+ assign dst_rdy_o = (state == STATE_FWD)? dst_rdy_i : 1'b0;
+
+endmodule // resp_packet_padder36
+
+
+
+