43 lines
972 B
Systemverilog
Executable File
43 lines
972 B
Systemverilog
Executable File
`ifndef __PRIORITY_ENCODER_SV__
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`define __PRIORITY_ENCODER_SV__
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module priority_encoder
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#(
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parameter int unsigned SEL_WIDTH = 8,
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localparam int unsigned SEL_ID_WIDHT = SEL_WIDTH > 1 ? $clog2(SEL_WIDTH) : 1
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)
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(
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input logic[SEL_WIDTH-1:0] sel_i,
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output logic id_vld_o,
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output logic[SEL_ID_WIDHT-1:0] id_o
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);
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if(SEL_WIDTH == 1) begin
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assign id_vld_o = sel_i;
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assign id_o = 1'b0;
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end
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else begin
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logic [SEL_WIDTH-1:0] sel_mask;
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logic [SEL_ID_WIDHT+1-1:0] sel_result;
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assign sel_mask = ((~sel_i + 1'b1) & sel_i) - 1'b1;
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one_counter #(
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.DATA_WIDTH(SEL_WIDTH)
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) one_counter_u (
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.data_i(sel_mask),
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.cnt_o(sel_result)
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);
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assign id_o = sel_result[SEL_ID_WIDHT-1:0];
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assign id_vld_o = |sel_i;
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end
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endmodule : priority_encoder
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`endif |