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// (C) 2001-2017 Intel Corporation. All rights reserved.

// Your use of Intel Corporation's design tools, logic functions and other

// software and tools, and its AMPP partner logic functions, and any output

// files from any of the foregoing (including device programming or simulation

// files), and any associated documentation or information are expressly subject

// to the terms and conditions of the Intel Program License Subscription

// Agreement, Intel FPGA IP License Agreement, or other applicable

// license agreement, including, without limitation, that your use is for the

// sole purpose of programming logic devices manufactured by Intel and sold by

// Intel or its authorized distributors.  Please refer to the applicable

// agreement for further details.

// (C) 2001-2012 Altera Corporation. All rights reserved.

// Your use of Altera Corporation's design tools, logic functions and other

// software and tools, and its AMPP partner logic functions, and any output

// files any of the foregoing (including device programming or simulation

// files), and any associated documentation or information are expressly subject

// to the terms and conditions of the Altera Program License Subscription

// Agreement, Altera MegaCore Function License Agreement, or other applicable

// license agreement, including, without limitation, that your use is for the

// sole purpose of programming logic devices manufactured by Altera and sold by

// Altera or its authorized distributors.  Please refer to the applicable

// agreement for further details.

// $Id: //acds/main/ip/merlin/altera_merlin_burst_adapter/altera_merlin_burst_adapter.sv#68 $

// $Revision: #68 $

// $Date: 2014/01/23 $

// $Author: wkleong $

`timescale 1 ns / 1 ns

// -------------------------------------------------------

// Adapter for uncompressed transactions only. This adapter will

// typically be used to adapt burst length for non-bursting

// wide to narrow Avalon links.

// -------------------------------------------------------

module altera_merlin_burst_adapter_uncompressed_only

#(

    parameter

    PKT_BYTE_CNT_H  = 5,

    PKT_BYTE_CNT_L  = 0,

    PKT_BYTEEN_H    = 83,

    PKT_BYTEEN_L    = 80,

    ST_DATA_W       = 84,

    ST_CHANNEL_W    = 8

)

(

    input clk,

    input reset,

    // -------------------

    // Command Sink (Input)

    // -------------------

    input                           sink0_valid,

    input  [ST_DATA_W-1 : 0]        sink0_data,

    input  [ST_CHANNEL_W-1 : 0]     sink0_channel,

    input                           sink0_startofpacket,

    input                           sink0_endofpacket,

    output reg                      sink0_ready,

    // -------------------

    // Command Source (Output)

    // -------------------

    output reg                      source0_valid,

    output reg [ST_DATA_W-1    : 0] source0_data,

    output reg [ST_CHANNEL_W-1 : 0] source0_channel,

    output reg                      source0_startofpacket,

    output reg                      source0_endofpacket,

    input                           source0_ready

);

    localparam

        PKT_BYTE_CNT_W = PKT_BYTE_CNT_H - PKT_BYTE_CNT_L + 1,

        NUM_SYMBOLS    = PKT_BYTEEN_H - PKT_BYTEEN_L + 1;

    wire [PKT_BYTE_CNT_W - 1 : 0] num_symbols_sig = NUM_SYMBOLS[PKT_BYTE_CNT_W - 1 : 0];

    always_comb begin : source0_data_assignments

        source0_valid         = sink0_valid;

        source0_channel       = sink0_channel;

        source0_startofpacket = sink0_startofpacket;

        source0_endofpacket   = sink0_endofpacket;

        source0_data          = sink0_data;

        source0_data[PKT_BYTE_CNT_H : PKT_BYTE_CNT_L] = num_symbols_sig;

        sink0_ready = source0_ready;

    end

endmodule