65 lines
2.0 KiB
Verilog
65 lines
2.0 KiB
Verilog
//
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// Copyright 2012-2013 Ettus Research LLC
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//
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module fifo64_to_gpif2
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#(
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parameter FIFO_SIZE = 9
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)
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(
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//input fifo interface
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input fifo_clk, input fifo_rst,
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input [63:0] i_tdata,
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input i_tlast,
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input i_tvalid,
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output i_tready,
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//output interface
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input gpif_clk, input gpif_rst,
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output [31:0] o_tdata,
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output o_tlast,
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output o_tvalid,
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input o_tready
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);
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wire [31:0] i32_tdata;
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wire i32_tlast;
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wire i32_tvalid, i32_tready;
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axi_fifo64_to_fifo32 fifo64_to_fifo32
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(
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.clk(fifo_clk), .reset(fifo_rst), .clear(1'b0),
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.i_tdata(i_tdata), .i_tuser(3'b0/*done care*/), .i_tlast(i_tlast), .i_tvalid(i_tvalid), .i_tready(i_tready),
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.o_tdata(i32_tdata), .o_tuser(/*ignored cuz vita has len*/), .o_tlast(i32_tlast), .o_tvalid(i32_tvalid), .o_tready(i32_tready)
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);
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wire [31:0] gate_tdata;
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wire gate_tlast;
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wire gate_tvalid, gate_tready;
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axi_fifo_2clk #(.WIDTH(33), .SIZE(0/*SRL*/)) cross_clock_fifo
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(
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.reset(fifo_rst | gpif_rst),
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.i_aclk(fifo_clk), .i_tdata({i32_tlast, i32_tdata}), .i_tvalid(i32_tvalid), .i_tready(i32_tready),
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.o_aclk(gpif_clk), .o_tdata({gate_tlast, gate_tdata}), .o_tvalid(gate_tvalid), .o_tready(gate_tready)
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);
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wire [31:0] int0_tdata; wire int0_tlast, int0_tvalid, int0_tready;
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axi_packet_gate #(.WIDTH(32), .SIZE(FIFO_SIZE)) buffer_whole_pkt
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(
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.clk(gpif_clk), .reset(gpif_rst), .clear(1'b0),
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.i_tdata(gate_tdata), .i_tlast(gate_tlast), .i_terror(1'b0), .i_tvalid(gate_tvalid), .i_tready(gate_tready),
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.o_tdata(int0_tdata), .o_tlast(int0_tlast), .o_tvalid(int0_tvalid), .o_tready(int0_tready)
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);
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axi_fifo #(.WIDTH(33), .SIZE(0)) outgress_timing_fifo
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(
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.clk(gpif_clk), .reset(gpif_rst), .clear(1'b0),
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.i_tdata({int0_tlast, int0_tdata}), .i_tvalid(int0_tvalid), .i_tready(int0_tready), .space(),
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.o_tdata({o_tlast, o_tdata}), .o_tvalid(o_tvalid), .o_tready(o_tready), .occupied()
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);
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endmodule //fifo_to_gpmc16
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