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//+FHDR------------------------------------------------------------------------
//Copyright (c) 2013 Latin Group American Integhrated Circuit, Inc. All rights reserved
//GLADIC Open Source RTL
//-----------------------------------------------------------------------------
//FILE NAME      :
//DEPARTMENT     : IC Design / Verification
//AUTHOR         : Felipe Fernandes da Costa
//AUTHOR’S EMAIL :
//-----------------------------------------------------------------------------
//RELEASE HISTORY
//VERSION DATE AUTHOR DESCRIPTION
//1.0 YYYY-MM-DD name
//-----------------------------------------------------------------------------
//KEYWORDS : General file searching keywords, leave blank if none.
//-----------------------------------------------------------------------------
//PURPOSE  : ECSS_E_ST_50_12C_31_july_2008
//-----------------------------------------------------------------------------
//PARAMETERS
//PARAM NAME            RANGE   : DESCRIPTION : DEFAULT : UNITS
//e.g.DATA_WIDTH        [32,16] : width of the DATA : 32:
//-----------------------------------------------------------------------------
//REUSE ISSUES
//Reset Strategy        :
//Clock Domains         :
//Critical Timing       :
//Test Features         :
//Asynchronous I/F      :
//Scan Methodology      :
//Instantiations        :
//Synthesizable (y/n)   :
//Other                 :
//-FHDR------------------------------------------------------------------------
 
`timescale 1ns/1ns
 
module TX_SPW (
                input pclk_tx,
                //
                input [8:0] data_tx_i,
                input txwrite_tx,
                //
                input [7:0] timecode_tx_i,
                input tickin_tx,
                //
                input enable_tx,
                input send_null_tx,
                input send_fct_tx,
 
                //
                input gotfct_tx,
                input send_fct_now,
                //
                output reg tx_dout_e,
                output reg tx_sout_e,
                //
                output  reg ready_tx_data,
                output  reg ready_tx_timecode
 
                );
 
localparam [6:0] tx_spw_start              = 7'b0000000,
                 tx_spw_null               = 7'b0000001,
                 tx_spw_fct                = 7'b0000010,
                 tx_spw_null_c             = 7'b0000100,
                 tx_spw_fct_c              = 7'b0001000,
                 tx_spw_data_c             = 7'b0010000,
                 tx_spw_time_code_c        = 7'b0100000;
 
localparam [5:0] NULL     = 6'b000001,
                 FCT      = 6'b000010,
                 EOP      = 6'b000100,
                 EEP      = 6'b001000,
                 DATA     = 6'b010000,
                 TIMEC    = 6'b100000;
 
 
localparam [7:0] null_s = 8'b01110100;
localparam [2:0] fct_s  = 3'b100;
localparam [3:0] eop_s  = 4'b0101;
localparam [3:0] eep_s  = 4'b0110;
localparam [13:0] timecode_ss    = 14'b01110000000000;
 
 
 
        reg [6:0] state_tx;
        reg [6:0] next_state_tx;
 
        reg  [2:0] state_fct_send;
        reg  [2:0] next_state_fct_send;
 
        reg  [2:0] state_fct_receive;
        reg  [2:0] next_state_fct_receive;
 
        reg  [2:0] state_data_fifo;
        reg  [2:0] next_state_data_fifo;
 
        reg [13:0] timecode_s;
 
        reg [5:0]  last_type;
        reg [8:0]  txdata_flagctrl_tx_last;
        reg [8:0]  tx_data_in;
        reg [8:0]  tx_data_took;
 
 
        reg [7:0]  last_timein_control_flag_tx;
        reg [7:0]  tx_tcode_in;
        reg tcode_rdy_trnsp;
 
        reg [2:0] fct_send;
        reg [2:0] fct_flag;
 
        reg [5:0] fct_counter_receive;
 
        reg data_ready_took;
        reg block_decrement;
        reg char_sent;
 
        reg fct_sent;
 
        reg last_tx_dout;
        reg last_tx_sout;
 
        reg tx_dout;
        reg tx_sout;
 
        reg tx_dout_null;
        reg tx_dout_fct;
        reg tx_dout_timecode;
        reg tx_dout_data;
 
        reg [3:0] global_counter_transfer;
 
 
 
always@(*)
begin
                tx_dout = last_tx_dout;
 
                case(state_tx)
                tx_spw_start:
                begin
                end
                tx_spw_null,tx_spw_null_c:
                begin
                         if(last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(null_s[6]^null_s[0]^null_s[1]);
                         end
                         else if(last_type == FCT  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(null_s[6]^fct_s[0]^fct_s[1]);
                         end
                         else if(last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(null_s[6]^eop_s[0]^eop_s[1]);
                         end
                         else if(last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(null_s[6]^eep_s[0]^eep_s[1]);
                         end
                         else if(last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout =  !(null_s[6]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
                         end
                         else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout =  !(null_s[6]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
                         end
                         else if(global_counter_transfer[3:0] == 4'd1)
                         begin
                                tx_dout = null_s[6];
                         end
                         else if(global_counter_transfer[3:0] == 4'd2)
                         begin
                                tx_dout = null_s[5];
                         end
                         else if(global_counter_transfer[3:0] == 4'd3)
                         begin
                                tx_dout = null_s[4];
                         end
                         else if(global_counter_transfer[3:0] == 4'd4)
                         begin
                                tx_dout = null_s[3];
                         end
                         else if(global_counter_transfer[3:0] == 4'd5)
                         begin
                                tx_dout = null_s[2];
                         end
                         else if(global_counter_transfer[3:0] == 4'd6)
                         begin
                                tx_dout = null_s[1];
                         end
                         else if(global_counter_transfer[3:0] == 4'd7)
                         begin
                                tx_dout = null_s[0];
                         end
                end
                tx_spw_fct,tx_spw_fct_c:
                begin
                         if(last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(fct_s[2]^null_s[0]^null_s[1]);
                         end
                         else if(last_type == FCT  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(fct_s[2]^fct_s[0]^fct_s[1]);
                         end
                         else if(last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(fct_s[2]^eop_s[0]^eop_s[1]);
                         end
                         else if(last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(fct_s[2]^eep_s[0]^eep_s[1]);
                         end
                         else if (last_type == DATA && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(fct_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
                         end
                         else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(fct_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
                         end
                         else if(global_counter_transfer[3:0] == 4'd1)
                         begin
                                tx_dout = fct_s[2];
                         end
                         else if(global_counter_transfer[3:0] == 4'd2)
                         begin
                                tx_dout = fct_s[1];
                         end
                         else if(global_counter_transfer[3:0] == 4'd3)
                         begin
                                tx_dout = fct_s[0];
                         end
                end
                tx_spw_data_c:
                begin
                        if(!tx_data_in[8] && last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(tx_data_in[8]^null_s[0]^null_s[1]);
                         end
                         else if(!tx_data_in[8] && last_type == FCT && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(tx_data_in[8]^fct_s[0]^fct_s[1]);
                         end
                         else if(!tx_data_in[8] && last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(tx_data_in[8]^eop_s[0]^eop_s[1]);
                         end
                         else if(!tx_data_in[8] && last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(tx_data_in[8]^eep_s[0]^eep_s[1]);
                         end
                         else if(!tx_data_in[8] && last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(tx_data_in[8]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
                         end
                         else if(!tx_data_in[8] && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(tx_data_in[8]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
                         end
                         else if(tx_data_in[8]  && tx_data_in[1:0] == 2'b00 && last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eop_s[2]^null_s[0]^null_s[1]);
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == FCT   && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eop_s[2]^fct_s[0]^fct_s[1]);
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eop_s[2]^eop_s[0]^eop_s[1]);
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eop_s[2]^eep_s[0]^eep_s[1]);
                         end
                         else if(tx_data_in[8]  && tx_data_in[1:0] == 2'b00 && last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eop_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
                         end
                         else if(tx_data_in[8]  && tx_data_in[1:0] == 2'b00 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eop_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eep_s[2]^null_s[0]^null_s[1]);
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == FCT  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eep_s[2]^fct_s[0]^fct_s[1]);
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eep_s[2]^eop_s[0]^eop_s[1]);
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == EEP && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eep_s[2]^eep_s[0]^eep_s[1]);
                         end
                         else if(tx_data_in[8]  && tx_data_in[1:0] == 2'b01 && last_type == DATA && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eep_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
                         end
                         else if(tx_data_in[8]  &&  tx_data_in[1:0] == 2'b01 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(eep_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
                         end
                         else if(!tx_data_in[8] &&  global_counter_transfer[3:0] == 4'd1)
                         begin
                                tx_dout = tx_data_in[8];
                         end
                         else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd2)
                         begin
                                tx_dout = tx_data_in[0];
                         end
                         else if(!tx_data_in[8] &&  global_counter_transfer[3:0] == 4'd3)
                         begin
                                tx_dout = tx_data_in[1];
                         end
                         else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd4)
                         begin
                                tx_dout = tx_data_in[2];
                         end
                         else if(!tx_data_in[8]  && global_counter_transfer[3:0] == 4'd5)
                         begin
                                tx_dout = tx_data_in[3];
                         end
                         else if(!tx_data_in[8]  && global_counter_transfer[3:0] == 4'd6)
                         begin
                                tx_dout = tx_data_in[4];
                         end
                         else if(!tx_data_in[8]  && global_counter_transfer[3:0] == 4'd7)
                         begin
                                tx_dout = tx_data_in[5];
                         end
                         else if(!tx_data_in[8] &&  global_counter_transfer[3:0] == 4'd8)
                         begin
                                tx_dout = tx_data_in[6];
                         end
                         else if(!tx_data_in[8] &&  global_counter_transfer[3:0] == 4'd9)
                         begin
                                tx_dout = tx_data_in[7];
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd1)
                         begin
                                tx_dout = eep_s[2];
                         end
                         else if( tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd2)
                         begin
                                tx_dout = eep_s[1];
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd3)
                         begin
                                tx_dout = eep_s[0];
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd1)
                         begin
                                tx_dout = eop_s[2];
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd2)
                         begin
                                tx_dout = eop_s[1];
                         end
                         else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd3)
                         begin
                                tx_dout = eop_s[0];
                         end
                end
                tx_spw_time_code_c:
                begin
                         if(last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(timecode_s[12]^null_s[0]^null_s[1]);
                         end
                         else if(last_type == FCT   && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(timecode_s[12]^fct_s[0]^fct_s[1]);
                         end
                         else if (last_type == EOP   && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(timecode_s[12]^eop_s[0]^eop_s[1]);
                         end
                         else if( last_type == EEP   && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(timecode_s[12]^eep_s[0]^eep_s[1]);
                         end
                         else if( last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(timecode_s[12]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
                         end
                         else if( last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
                         begin
                                tx_dout = !(timecode_s[12]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
                         end
                         else if( global_counter_transfer[3:0] == 4'd1)
                         begin
                                tx_dout = timecode_s[12];
                         end
                         else if( global_counter_transfer[3:0] == 4'd2)
                         begin
                                tx_dout = timecode_s[11];
                         end
                         else if( global_counter_transfer[3:0] == 4'd3)
                         begin
                                tx_dout = timecode_s[10];
                         end
                         else if( global_counter_transfer[3:0] == 4'd4)
                         begin
                                tx_dout = timecode_s[9];
                         end
                         else if( global_counter_transfer[3:0] == 4'd5)
                         begin
                                tx_dout = timecode_s[8];
                         end
                         else if( global_counter_transfer[3:0] == 4'd6)
                         begin
                                tx_dout = timecode_s[0];
                         end
                         else if( global_counter_transfer[3:0] == 4'd7)
                         begin
                                tx_dout = timecode_s[1];
                         end
                         else if( global_counter_transfer[3:0] == 4'd8)
                         begin
                                tx_dout = timecode_s[2];
                         end
                         else if(global_counter_transfer[3:0] == 4'd9)
                         begin
                                tx_dout = timecode_s[3];
                         end
                         else if(global_counter_transfer[3:0] == 4'd10)
                         begin
                                tx_dout = timecode_s[4];
                         end
                         else if(global_counter_transfer[3:0] == 4'd11)
                         begin
                                tx_dout = timecode_s[5];
                         end
                         else if( global_counter_transfer[3:0] == 4'd12)
                         begin
                                tx_dout = timecode_s[6];
                         end
                         else if(global_counter_transfer[3:0] == 4'd13)
                         begin
                                tx_dout = timecode_s[7];
                         end
                end
                default:
                begin
                end
                endcase
end
 
//strobe
always@(*)
begin
 
        tx_sout = last_tx_sout;
 
        if(tx_dout == last_tx_dout)
        begin
                tx_sout = !last_tx_sout;
        end
        else if(tx_dout != last_tx_dout)
        begin
                tx_sout = last_tx_sout;
        end
end
 
always@(*)
begin
        next_state_fct_send = state_fct_send;
 
        case(state_fct_send)
        3'd0:
        begin
                if(send_fct_now)
                begin
                        next_state_fct_send = 3'd1;
                end
                else if(fct_sent)
                begin
                        next_state_fct_send = 3'd3;
                end
                else
                        next_state_fct_send = 3'd0;
        end
        3'd1:
        begin
                if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                begin
                        next_state_fct_send = 3'd2;
                end
                else
                begin
                        next_state_fct_send = 3'd1;
                end
        end
        3'd2:
        begin
                if(send_fct_now)
                begin
                        next_state_fct_send = 3'd2;
                end
                else
                begin
                        next_state_fct_send = 3'd0;
                end
        end
        3'd3:
        begin
                if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                begin
                        next_state_fct_send = 3'd4;
                end
                else
                begin
                        next_state_fct_send = 3'd3;
                end
        end
        3'd4:
        begin
                if(fct_sent)
                begin
                        next_state_fct_send = 3'd4;
                end
                else
                begin
                        next_state_fct_send = 3'd0;
                end
        end
        default:
        begin
                next_state_fct_send = 3'd0;
        end
        endcase
end
 
always@(posedge pclk_tx or negedge enable_tx)
begin
        if(!enable_tx)
        begin
                fct_flag <= 3'd7;
                state_fct_send<= 3'd0;
        end
        else
        begin
                state_fct_send <= next_state_fct_send;
 
                case(state_fct_send)
                3'd0:
                begin
                        fct_flag <= fct_flag;
                end
                3'd1:
                begin
                        if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                                fct_flag <= fct_flag + 3'd1;
                        else
                                fct_flag <= fct_flag;
                end
                3'd2:
                begin
                        fct_flag <= fct_flag;
                end
                3'd3:
                begin
                        if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                                fct_flag <= fct_flag - 3'd1;
                        else
                                fct_flag <= fct_flag;
                end
                3'd4:
                begin
                        fct_flag <= fct_flag;
                end
                default:
                begin
                        fct_flag <= fct_flag;
                end
                endcase
        end
end
 
 
always@(*)
begin
        next_state_fct_receive = state_fct_receive;
 
        case(state_fct_receive)
        3'd0:
        begin
                if(gotfct_tx)
                begin
                        next_state_fct_receive = 3'd1;
                end
                else if(char_sent)
                begin
                        next_state_fct_receive = 3'd3;
                end
                else
                        next_state_fct_receive = 3'd0;
        end
        3'd1:
        begin
                if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                begin
                        next_state_fct_receive = 3'd2;
                end
                else
                begin
                        next_state_fct_receive = 3'd1;
                end
        end
        3'd2:
        begin
                if(gotfct_tx)
                begin
                        next_state_fct_receive = 3'd2;
                end
                else
                begin
                        next_state_fct_receive = 3'd0;
                end
        end
        3'd3:
        begin
                if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                begin
                        next_state_fct_receive = 3'd4;
                end
                else
                begin
                        next_state_fct_receive = 3'd3;
                end
        end
        3'd4:
        begin
                if(char_sent)
                begin
                        next_state_fct_receive = 3'd4;
                end
                else
                begin
                        next_state_fct_receive = 3'd0;
                end
        end
        default:
        begin
                next_state_fct_receive = 3'd0;
        end
        endcase
end
 
 
always@(posedge pclk_tx or negedge enable_tx)
begin
        if(!enable_tx)
        begin
                fct_counter_receive<= 6'd0;
                state_fct_receive <= 3'd0;
        end
        else
        begin
 
                state_fct_receive <= next_state_fct_receive;
 
                case(state_fct_receive)
                3'd0:
                begin
                        fct_counter_receive <= fct_counter_receive;
                end
                3'd1:
                begin
                        if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                        begin
                                if(fct_counter_receive < 6'd48)
                                begin
                                        fct_counter_receive <= fct_counter_receive + 6'd8;
                                end
                                else
                                begin
                                        fct_counter_receive <= fct_counter_receive + 6'd7;
                                end
                        end
                        else
                                fct_counter_receive <= fct_counter_receive;
                end
                3'd2:
                begin
                        fct_counter_receive <= fct_counter_receive;
                end
                3'd3:
                begin
                        if(global_counter_transfer > 4'd0 &&  global_counter_transfer < 4'd12)
                        begin
                                if(fct_counter_receive == 6'd0)
                                        fct_counter_receive <= fct_counter_receive;
                                else
                                        fct_counter_receive <= fct_counter_receive - 6'd1;
                        end
                        else
                                fct_counter_receive <= fct_counter_receive;
                end
                3'd4:
                begin
                        fct_counter_receive <= fct_counter_receive;
                end
                default:
                begin
                        fct_counter_receive <= fct_counter_receive;
                end
                endcase
        end
end
 
 
always@(*)
begin
        next_state_data_fifo = state_data_fifo;
 
        case(state_data_fifo)
        3'd0:
        begin
                if(!ready_tx_data && txwrite_tx)
                begin
                        next_state_data_fifo = 3'd1;
                end
                else
                        next_state_data_fifo = 3'd0;
        end
        3'd1:
        begin
                next_state_data_fifo = 3'd2;
        end
        3'd2:
        begin
 
                if(state_tx == tx_spw_null_c && global_counter_transfer > 4'd1 && global_counter_transfer < 4'd7)
                        next_state_data_fifo = 3'd3;
                else if(state_tx == tx_spw_data_c && global_counter_transfer > 4'd1 && global_counter_transfer < 4'd9)
                        next_state_data_fifo = 3'd3;
                else
                        next_state_data_fifo = 3'd2;
        end
        3'd3:
        begin
                if(!ready_tx_data && txwrite_tx)
                begin
                        next_state_data_fifo = 3'd3;
                end
                else
                begin
                        next_state_data_fifo = 3'd0;
                end
        end
        default:
        begin
                next_state_data_fifo = 3'd0;
        end
        endcase
end
 
always@(posedge pclk_tx or negedge enable_tx)
begin
        if(!enable_tx)
        begin
                data_ready_took <= 1'b0;
                state_data_fifo <= 3'd0;
                tx_data_took <= 9'd0;
        end
        else
        begin
 
                state_data_fifo <= next_state_data_fifo;
 
                case(state_data_fifo)
                3'd0:
                begin
                        //tx_data_took <= tx_data_took;
                end
                3'd1:
                begin
                        tx_data_took <= data_tx_i;
                end
                3'd2:
                begin
                        tx_data_took <= data_tx_i;
 
                        if(state_tx == tx_spw_null_c && global_counter_transfer > 4'd0 && global_counter_transfer < 4'd7)
                                data_ready_took <= 1'b1;
                        else if(state_tx == tx_spw_data_c && global_counter_transfer > 4'd0 && global_counter_transfer < 4'd9)
                                data_ready_took <= 1'b1;
                        else
                                data_ready_took <= 1'b0;
                end
                3'd3:
                begin
                        if(!ready_tx_data && txwrite_tx)
                        begin
                                data_ready_took <= 1'b1;
                        end
                        else
                        begin
                                data_ready_took <= 1'b0;
                        end
                end
                default:
                begin
                end
                endcase
        end
end
 
always@(*)
begin
        next_state_tx = state_tx;
 
        case(state_tx)
        tx_spw_start:
        begin
                if(send_null_tx && enable_tx)
                begin
                        next_state_tx = tx_spw_null;
                end
                else
                begin
                        next_state_tx = tx_spw_start;
                end
        end
        tx_spw_null:
        begin
                if(send_null_tx && send_fct_tx && enable_tx)
                begin
                        if(global_counter_transfer == 4'd7)
                                next_state_tx = tx_spw_fct;
                        else
                                next_state_tx = tx_spw_null;
                end
                else
                        next_state_tx = tx_spw_null;
        end
        tx_spw_fct:
        begin
                if(send_fct_tx && global_counter_transfer == 4'd3)
                begin
                        if(tickin_tx && !ready_tx_timecode && tcode_rdy_trnsp)
                        begin
                                next_state_tx = tx_spw_time_code_c;
                        end
                        else if(fct_flag > 3'd0 && !send_fct_now)
                        begin
                                next_state_tx = tx_spw_fct;
                        end
                        else
                        begin
                                next_state_tx = tx_spw_null_c;
                        end
                end
                else
                        next_state_tx = tx_spw_fct;
        end
        tx_spw_null_c:
        begin
                if(global_counter_transfer == 4'd7)
                begin
                        if(tickin_tx && !ready_tx_timecode && tcode_rdy_trnsp)
                        begin
                                next_state_tx = tx_spw_time_code_c;
                        end
                        else if(fct_flag > 3'd0 && !send_fct_now)
                        begin
                                next_state_tx = tx_spw_fct_c;
                        end
                        else if(data_ready_took && !gotfct_tx && fct_counter_receive > 6'd0)
                        begin
                                next_state_tx = tx_spw_data_c;
                        end
                        else
                        begin
                                next_state_tx = tx_spw_null_c;
                        end
                end
                else
                begin
                        next_state_tx = tx_spw_null_c;
                end
        end
        tx_spw_fct_c:
        begin
                if(global_counter_transfer == 4'd3)
                begin
                        if(tickin_tx && !ready_tx_timecode && tcode_rdy_trnsp)
                        begin
                                next_state_tx = tx_spw_time_code_c;
                        end
                        else
                        begin
                                next_state_tx = tx_spw_null_c;
                        end
                end
                else
                begin
                        next_state_tx = tx_spw_fct_c;
                end
        end
        tx_spw_data_c:
        begin
 
                if(!tx_data_in[8])
                begin
                        if(global_counter_transfer == 4'd9)
                        begin
                                if(tickin_tx && !ready_tx_timecode && tcode_rdy_trnsp)
                                begin
                                        next_state_tx = tx_spw_time_code_c;
                                end
                                else if(fct_flag > 3'd0 && !send_fct_now)
                                begin
                                        next_state_tx = tx_spw_fct_c;
                                end
                                else if(data_ready_took && !gotfct_tx && fct_counter_receive > 6'd0)
                                begin
                                        next_state_tx = tx_spw_data_c;
                                end
                                else
                                begin
                                        next_state_tx = tx_spw_null_c;
                                end
                        end
                        else
                                next_state_tx = tx_spw_data_c;
                end
                else if(tx_data_in[8])
                begin
                        if(global_counter_transfer == 4'd3)
                        begin
                                if(tickin_tx && !ready_tx_timecode && tcode_rdy_trnsp)
                                begin
                                        next_state_tx = tx_spw_time_code_c;
                                end
                                else if(fct_flag > 3'd0 && !send_fct_now)
                                begin
                                        next_state_tx = tx_spw_fct_c;
                                end
                                else
                                begin
                                        next_state_tx = tx_spw_null_c;
                                end
                        end
                        else
                                next_state_tx = tx_spw_data_c;
                end
 
 
        end
        tx_spw_time_code_c:
        begin
                if(global_counter_transfer == 4'd13)
                begin
                        if(fct_flag > 3'd0 && !send_fct_now)
                        begin
                                next_state_tx = tx_spw_fct_c;
                        end
                        else if(data_ready_took && !gotfct_tx && fct_counter_receive > 6'd0 )
                        begin
                                next_state_tx = tx_spw_data_c;
                        end
                        else
                        begin
                                next_state_tx = tx_spw_null_c;
                        end
                end
                else
                begin
                        next_state_tx = tx_spw_time_code_c;
                end
        end
        default:
        begin
                next_state_tx = tx_spw_start;
        end
        endcase
end
 
 
always@(posedge pclk_tx or negedge enable_tx)
begin
        if(!enable_tx)
        begin
 
                timecode_s    <= 14'b01110000000000;
 
                ready_tx_data     <= 1'b0;
                ready_tx_timecode <= 1'b0;
 
                last_type  <= NULL;
 
                global_counter_transfer <= 4'd0;
                txdata_flagctrl_tx_last <= 9'd0;
                tx_data_in <= 9'd0;
                last_timein_control_flag_tx <= 8'd0;
 
                char_sent<= 1'b0;
                fct_sent <= 1'b0;
 
                last_tx_dout      <= 1'b0;
                last_tx_sout      <= 1'b0;
 
                state_tx <= tx_spw_start;
 
                tx_dout_e <= 1'b0;
                tx_sout_e <= 1'b0;
 
                tx_tcode_in     <= 8'd0;
                tcode_rdy_trnsp <= 1'b0;
 
        end
        else
        begin
                state_tx <= next_state_tx;
 
                case(state_tx)
                tx_spw_start:
                begin
                        global_counter_transfer <= 4'd0;
                end
                tx_spw_null:
                begin
 
                        last_tx_dout <= tx_dout;
                        last_tx_sout <= tx_sout;
 
                        tx_dout_e <= last_tx_dout;
                        tx_sout_e <= last_tx_sout;
 
 
                        if(tickin_tx && global_counter_transfer == 4'd5)
                        begin
                                tx_tcode_in <= timecode_tx_i;
                                tcode_rdy_trnsp <= 1'b1;
                        end
                        else
                                tx_tcode_in <= tx_tcode_in;
 
 
                        if(global_counter_transfer == 4'd7)
                        begin
                                last_type  <= NULL;
                                global_counter_transfer <= 4'd0;
                        end
                        else
                        begin
                                last_type  <= last_type;
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
                end
                tx_spw_fct:
                begin
 
                        last_tx_dout <= tx_dout;
                        last_tx_sout <= tx_sout;
 
                        tx_dout_e <= last_tx_dout;
                        tx_sout_e <= last_tx_sout;
 
                        if(global_counter_transfer == 4'd3)
                        begin
                                last_type  <=FCT;
                                global_counter_transfer <= 4'd0;
                                fct_sent <= 1'b0;
                        end
                        else
                        begin
                                if(fct_flag > 3'd0)
                                        fct_sent <=  1'b1;
                                else
                                        fct_sent <= fct_sent;
 
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
                end
                tx_spw_null_c:
                begin
 
                        last_tx_dout <= tx_dout;
                        last_tx_sout <= tx_sout;
 
                        tx_dout_e <= last_tx_dout;
                        tx_sout_e <= last_tx_sout;
 
                        if(global_counter_transfer == 4'd7)
                        begin
                                last_type  <= NULL;
                                global_counter_transfer <= 4'd0;
 
                                if(data_ready_took)
                                        tx_data_in <= tx_data_took;
                                else
                                        tx_data_in <= tx_data_in;
                        end
                        else
                        begin
                                char_sent <= 1'b0;
                                fct_sent <=  1'b0;
                                ready_tx_timecode <= 1'b0;
                                last_type  <= last_type;
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
                end
                tx_spw_fct_c:
                begin
 
                        last_tx_dout <= tx_dout;
                        last_tx_sout <= tx_sout;
 
                        tx_dout_e <= last_tx_dout;
                        tx_sout_e <= last_tx_sout;
 
                        if(global_counter_transfer == 4'd3)
                        begin
                                char_sent <= 1'b0;
                                last_type  <=FCT;
                                fct_sent <=  1'b0;
                                global_counter_transfer <= 4'd0;
                        end
                        else
                        begin
                                if(fct_flag > 3'd0)
                                        fct_sent <=  1'b1;
                                else
                                        fct_sent <= fct_sent;
 
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
                end
                tx_spw_data_c:
                begin
 
                        last_tx_dout <= tx_dout;
                        last_tx_sout <= tx_sout;
 
                        tx_dout_e <= last_tx_dout;
                        tx_sout_e <= last_tx_sout;
 
                        fct_sent <=  1'b0;
 
                        if(!tx_data_in[8])
                        begin
 
                                if(global_counter_transfer == 4'd9)
                                begin
                                        char_sent <= 1'b1;
                                        last_type  <= DATA;
                                        global_counter_transfer <= 4'd0;
 
                                        if(data_ready_took)
                                                tx_data_in <= tx_data_took;
                                        else
                                                tx_data_in <= tx_data_in;
                                end
                                else
                                begin
 
                                        if(global_counter_transfer == 4'd1)
                                        begin
                                                txdata_flagctrl_tx_last <= tx_data_in;
                                        end
                                        else
                                                txdata_flagctrl_tx_last <= txdata_flagctrl_tx_last;
 
 
                                        if(global_counter_transfer >= 4'd2 && global_counter_transfer < 4'd5)
                                        begin
                                                ready_tx_data <= 1'b1;
                                        end
                                        else
                                                ready_tx_data <= 1'b0;
 
                                        char_sent <= 1'b0;
                                        ready_tx_timecode <= 1'b0;
                                        global_counter_transfer <= global_counter_transfer + 4'd1;
 
                                 end
 
                        end
                        else if(tx_data_in[8])
                        begin
 
                                if(global_counter_transfer == 4'd3)
                                begin
                                        char_sent <= 1'b1;
 
                                        if(tx_data_in[1:0] == 2'b00)
                                        begin
                                                last_type  <=EOP;
                                        end
                                        else if(tx_data_in[1:0] == 2'b01)
                                        begin
                                                last_type  <=EEP;
                                        end
 
                                        ready_tx_data <= 1'b0;
                                        global_counter_transfer <= 4'd0;
                                end
                                else
                                begin
                                        txdata_flagctrl_tx_last <= txdata_flagctrl_tx_last;
                                        ready_tx_data <= 1'b1;
                                        ready_tx_timecode <= 1'b0;
                                        global_counter_transfer <= global_counter_transfer + 4'd1;
                                end
                        end
 
                end
                tx_spw_time_code_c:
                begin
 
                        fct_sent <=  1'b0;
 
                        last_tx_dout <= tx_dout;
                        last_tx_sout <= tx_sout;
 
                        tx_dout_e <= last_tx_dout;
                        tx_sout_e <= last_tx_sout;
 
                        if(global_counter_transfer == 4'd13)
                        begin
                                ready_tx_timecode <= 1'b1;
                                global_counter_transfer <= 4'd0;
                        end
                        else
                        begin
                                ready_tx_timecode <= 1'b0;
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
 
 
                        if(global_counter_transfer != 4'd13)
                        begin
 
                                timecode_s <= {timecode_ss[13:10],2'd2,tx_tcode_in[7:0]};
                        end
                        else
                        begin
                                last_timein_control_flag_tx <= tx_tcode_in;
                                last_type  <= TIMEC;
                        end
 
                end
                default:
                begin
                        last_type               <= last_type;
                        global_counter_transfer <= global_counter_transfer;
                        tx_dout_e               <= tx_dout_e;
                        tx_sout_e               <= tx_sout_e;
                end
                endcase
        end
end
 
endmodule

Line No.	Rev	Author	Line
1	5	redbear	`//+FHDR------------------------------------------------------------------------`
2			`//Copyright (c) 2013 Latin Group American Integhrated Circuit, Inc. All rights reserved`
3			`//GLADIC Open Source RTL`
4			`//-----------------------------------------------------------------------------`
5			`//FILE NAME :`
6			`//DEPARTMENT : IC Design / Verification`
7			`//AUTHOR : Felipe Fernandes da Costa`
8			`//AUTHOR’S EMAIL :`
9			`//-----------------------------------------------------------------------------`
10			`//RELEASE HISTORY`
11			`//VERSION DATE AUTHOR DESCRIPTION`
12			`//1.0 YYYY-MM-DD name`
13			`//-----------------------------------------------------------------------------`
14			`//KEYWORDS : General file searching keywords, leave blank if none.`
15			`//-----------------------------------------------------------------------------`
16			`//PURPOSE : ECSS_E_ST_50_12C_31_july_2008`
17			`//-----------------------------------------------------------------------------`
18			`//PARAMETERS`
19			`//PARAM NAME RANGE : DESCRIPTION : DEFAULT : UNITS`
20			`//e.g.DATA_WIDTH [32,16] : width of the DATA : 32:`
21			`//-----------------------------------------------------------------------------`
22			`//REUSE ISSUES`
23			`//Reset Strategy :`
24			`//Clock Domains :`
25			`//Critical Timing :`
26			`//Test Features :`
27			`//Asynchronous I/F :`
28			`//Scan Methodology :`
29			`//Instantiations :`
30			`//Synthesizable (y/n) :`
31			`//Other :`
32			`//-FHDR------------------------------------------------------------------------`
33
34			`timescale 1ns/1ns
35
36			`module TX_SPW (`
37			`input pclk_tx,`
38			`//`
39			`input [8:0] data_tx_i,`
40			`input txwrite_tx,`
41			`//`
42			`input [7:0] timecode_tx_i,`
43			`input tickin_tx,`
44			`//`
45			`input enable_tx,`
46			`input send_null_tx,`
47			`input send_fct_tx,`
48
49			`//`
50			`input gotfct_tx,`
51			`input send_fct_now,`
52			`//`
53	33	redbear	`output reg tx_dout_e,`
54			`output reg tx_sout_e,`
55	5	redbear	`//`
56	8	redbear	`output reg ready_tx_data,`
57	13	redbear	`output reg ready_tx_timecode`
58	5	redbear
59			`);`
60
61	37	redbear	`localparam [6:0] tx_spw_start = 7'b0000000,`
62			`tx_spw_null = 7'b0000001,`
63			`tx_spw_fct = 7'b0000010,`
64			`tx_spw_null_c = 7'b0000100,`
65			`tx_spw_fct_c = 7'b0001000,`
66			`tx_spw_data_c = 7'b0010000,`
67			`tx_spw_time_code_c = 7'b0100000;`
68	5	redbear
69			`localparam [5:0] NULL = 6'b000001,`
70			`FCT = 6'b000010,`
71			`EOP = 6'b000100,`
72			`EEP = 6'b001000,`
73			`DATA = 6'b010000,`
74			`TIMEC = 6'b100000;`
75
76	25	redbear
77			`localparam [7:0] null_s = 8'b01110100;`
78			`localparam [2:0] fct_s = 3'b100;`
79			`localparam [3:0] eop_s = 4'b0101;`
80			`localparam [3:0] eep_s = 4'b0110;`
81			`localparam [13:0] timecode_ss = 14'b01110000000000;`
82
83
84
85	37	redbear	`reg [6:0] state_tx;`
86			`reg [6:0] next_state_tx;`
87	5	redbear
88	37	redbear	`reg [2:0] state_fct_send;`
89			`reg [2:0] next_state_fct_send;`
90
91			`reg [2:0] state_fct_receive;`
92			`reg [2:0] next_state_fct_receive;`
93
94	38	redbear	`reg [2:0] state_data_fifo;`
95			`reg [2:0] next_state_data_fifo;`
96
97	5	redbear	`reg [13:0] timecode_s;`
98
99			`reg [5:0] last_type;`
100			`reg [8:0] txdata_flagctrl_tx_last;`
101	36	redbear	`reg [8:0] tx_data_in;`
102	38	redbear	`reg [8:0] tx_data_took;`
103
104
105	5	redbear	`reg [7:0] last_timein_control_flag_tx;`
106	36	redbear	`reg [7:0] tx_tcode_in;`
107			`reg tcode_rdy_trnsp;`
108	5	redbear
109			`reg [2:0] fct_send;`
110			`reg [2:0] fct_flag;`
111	6	redbear
112			`reg [5:0] fct_counter_receive;`
113
114	38	redbear	`reg data_ready_took;`
115	37	redbear	`reg block_decrement;`
116			`reg char_sent;`
117
118			`reg fct_sent;`
119
120	5	redbear	`reg last_tx_dout;`
121			`reg last_tx_sout;`
122
123	33	redbear	`reg tx_dout;`
124			`reg tx_sout;`
125
126			`reg tx_dout_null;`
127			`reg tx_dout_fct;`
128			`reg tx_dout_timecode;`
129			`reg tx_dout_data;`
130
131	5	redbear	`reg [3:0] global_counter_transfer;`
132
133
134	13	redbear
135	5	redbear	`always@(*)`
136			`begin`
137	37	redbear	`tx_dout = last_tx_dout;`
138	5	redbear
139	37	redbear	`case(state_tx)`
140			`tx_spw_start:`
141			`begin`
142			`end`
143			`tx_spw_null,tx_spw_null_c:`
144			`begin`
145			`if(last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
146			`begin`
147			`tx_dout = !(null_s[6]^null_s[0]^null_s[1]);`
148			`end`
149			`else if(last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
150			`begin`
151			`tx_dout = !(null_s[6]^fct_s[0]^fct_s[1]);`
152			`end`
153			`else if(last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
154			`begin`
155			`tx_dout = !(null_s[6]^eop_s[0]^eop_s[1]);`
156			`end`
157			`else if(last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
158			`begin`
159			`tx_dout = !(null_s[6]^eep_s[0]^eep_s[1]);`
160			`end`
161			`else if(last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
162			`begin`
163			`tx_dout = !(null_s[6]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);`
164			`end`
165			`else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
166			`begin`
167			`tx_dout = !(null_s[6]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);`
168			`end`
169			`else if(global_counter_transfer[3:0] == 4'd1)`
170			`begin`
171			`tx_dout = null_s[6];`
172			`end`
173			`else if(global_counter_transfer[3:0] == 4'd2)`
174			`begin`
175			`tx_dout = null_s[5];`
176			`end`
177			`else if(global_counter_transfer[3:0] == 4'd3)`
178			`begin`
179			`tx_dout = null_s[4];`
180			`end`
181			`else if(global_counter_transfer[3:0] == 4'd4)`
182			`begin`
183			`tx_dout = null_s[3];`
184			`end`
185			`else if(global_counter_transfer[3:0] == 4'd5)`
186			`begin`
187			`tx_dout = null_s[2];`
188			`end`
189			`else if(global_counter_transfer[3:0] == 4'd6)`
190			`begin`
191			`tx_dout = null_s[1];`
192			`end`
193			`else if(global_counter_transfer[3:0] == 4'd7)`
194			`begin`
195			`tx_dout = null_s[0];`
196			`end`
197			`end`
198			`tx_spw_fct,tx_spw_fct_c:`
199			`begin`
200			`if(last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
201			`begin`
202			`tx_dout = !(fct_s[2]^null_s[0]^null_s[1]);`
203			`end`
204			`else if(last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
205			`begin`
206			`tx_dout = !(fct_s[2]^fct_s[0]^fct_s[1]);`
207			`end`
208			`else if(last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
209			`begin`
210			`tx_dout = !(fct_s[2]^eop_s[0]^eop_s[1]);`
211			`end`
212			`else if(last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
213			`begin`
214			`tx_dout = !(fct_s[2]^eep_s[0]^eep_s[1]);`
215			`end`
216			`else if (last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
217			`begin`
218			`tx_dout = !(fct_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);`
219			`end`
220			`else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
221			`begin`
222			`tx_dout = !(fct_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);`
223			`end`
224			`else if(global_counter_transfer[3:0] == 4'd1)`
225			`begin`
226			`tx_dout = fct_s[2];`
227			`end`
228			`else if(global_counter_transfer[3:0] == 4'd2)`
229			`begin`
230			`tx_dout = fct_s[1];`
231			`end`
232			`else if(global_counter_transfer[3:0] == 4'd3)`
233			`begin`
234			`tx_dout = fct_s[0];`
235			`end`
236			`end`
237			`tx_spw_data_c:`
238			`begin`
239			`if(!tx_data_in[8] && last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
240			`begin`
241			`tx_dout = !(tx_data_in[8]^null_s[0]^null_s[1]);`
242			`end`
243			`else if(!tx_data_in[8] && last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
244			`begin`
245			`tx_dout = !(tx_data_in[8]^fct_s[0]^fct_s[1]);`
246			`end`
247			`else if(!tx_data_in[8] && last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
248			`begin`
249			`tx_dout = !(tx_data_in[8]^eop_s[0]^eop_s[1]);`
250			`end`
251			`else if(!tx_data_in[8] && last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
252			`begin`
253			`tx_dout = !(tx_data_in[8]^eep_s[0]^eep_s[1]);`
254			`end`
255			`else if(!tx_data_in[8] && last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
256			`begin`
257			`tx_dout = !(tx_data_in[8]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);`
258			`end`
259			`else if(!tx_data_in[8] && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
260			`begin`
261			`tx_dout = !(tx_data_in[8]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);`
262			`end`
263			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
264			`begin`
265			`tx_dout = !(eop_s[2]^null_s[0]^null_s[1]);`
266			`end`
267			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
268			`begin`
269			`tx_dout = !(eop_s[2]^fct_s[0]^fct_s[1]);`
270			`end`
271			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
272			`begin`
273			`tx_dout = !(eop_s[2]^eop_s[0]^eop_s[1]);`
274			`end`
275			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
276			`begin`
277			`tx_dout = !(eop_s[2]^eep_s[0]^eep_s[1]);`
278			`end`
279			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
280			`begin`
281			`tx_dout = !(eop_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);`
282			`end`
283			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
284			`begin`
285			`tx_dout = !(eop_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);`
286			`end`
287			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
288			`begin`
289			`tx_dout = !(eep_s[2]^null_s[0]^null_s[1]);`
290			`end`
291			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
292			`begin`
293			`tx_dout = !(eep_s[2]^fct_s[0]^fct_s[1]);`
294			`end`
295			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
296			`begin`
297			`tx_dout = !(eep_s[2]^eop_s[0]^eop_s[1]);`
298			`end`
299			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
300			`begin`
301			`tx_dout = !(eep_s[2]^eep_s[0]^eep_s[1]);`
302			`end`
303			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
304			`begin`
305			`tx_dout = !(eep_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);`
306			`end`
307			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
308			`begin`
309			`tx_dout = !(eep_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);`
310			`end`
311			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd1)`
312			`begin`
313			`tx_dout = tx_data_in[8];`
314			`end`
315			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd2)`
316			`begin`
317			`tx_dout = tx_data_in[0];`
318			`end`
319			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd3)`
320			`begin`
321			`tx_dout = tx_data_in[1];`
322			`end`
323			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd4)`
324			`begin`
325			`tx_dout = tx_data_in[2];`
326			`end`
327			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd5)`
328			`begin`
329			`tx_dout = tx_data_in[3];`
330			`end`
331			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd6)`
332			`begin`
333			`tx_dout = tx_data_in[4];`
334			`end`
335			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd7)`
336			`begin`
337			`tx_dout = tx_data_in[5];`
338			`end`
339			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd8)`
340			`begin`
341			`tx_dout = tx_data_in[6];`
342			`end`
343			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd9)`
344			`begin`
345			`tx_dout = tx_data_in[7];`
346			`end`
347			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd1)`
348			`begin`
349			`tx_dout = eep_s[2];`
350			`end`
351			`else if( tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd2)`
352			`begin`
353			`tx_dout = eep_s[1];`
354			`end`
355			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd3)`
356			`begin`
357			`tx_dout = eep_s[0];`
358			`end`
359			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd1)`
360			`begin`
361			`tx_dout = eop_s[2];`
362			`end`
363			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd2)`
364			`begin`
365			`tx_dout = eop_s[1];`
366			`end`
367			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd3)`
368			`begin`
369			`tx_dout = eop_s[0];`
370			`end`
371			`end`
372			`tx_spw_time_code_c:`
373			`begin`
374			`if(last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
375			`begin`
376			`tx_dout = !(timecode_s[12]^null_s[0]^null_s[1]);`
377			`end`
378			`else if(last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
379			`begin`
380			`tx_dout = !(timecode_s[12]^fct_s[0]^fct_s[1]);`
381			`end`
382			`else if (last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
383			`begin`
384			`tx_dout = !(timecode_s[12]^eop_s[0]^eop_s[1]);`
385			`end`
386			`else if( last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
387			`begin`
388			`tx_dout = !(timecode_s[12]^eep_s[0]^eep_s[1]);`
389			`end`
390			`else if( last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
391			`begin`
392			`tx_dout = !(timecode_s[12]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);`
393			`end`
394			`else if( last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
395			`begin`
396			`tx_dout = !(timecode_s[12]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);`
397			`end`
398			`else if( global_counter_transfer[3:0] == 4'd1)`
399			`begin`
400			`tx_dout = timecode_s[12];`
401			`end`
402			`else if( global_counter_transfer[3:0] == 4'd2)`
403			`begin`
404			`tx_dout = timecode_s[11];`
405			`end`
406			`else if( global_counter_transfer[3:0] == 4'd3)`
407			`begin`
408			`tx_dout = timecode_s[10];`
409			`end`
410			`else if( global_counter_transfer[3:0] == 4'd4)`
411			`begin`
412			`tx_dout = timecode_s[9];`
413			`end`
414			`else if( global_counter_transfer[3:0] == 4'd5)`
415			`begin`
416			`tx_dout = timecode_s[8];`
417			`end`
418			`else if( global_counter_transfer[3:0] == 4'd6)`
419			`begin`
420			`tx_dout = timecode_s[0];`
421			`end`
422			`else if( global_counter_transfer[3:0] == 4'd7)`
423			`begin`
424			`tx_dout = timecode_s[1];`
425			`end`
426			`else if( global_counter_transfer[3:0] == 4'd8)`
427			`begin`
428			`tx_dout = timecode_s[2];`
429			`end`
430			`else if(global_counter_transfer[3:0] == 4'd9)`
431			`begin`
432			`tx_dout = timecode_s[3];`
433			`end`
434			`else if(global_counter_transfer[3:0] == 4'd10)`
435			`begin`
436			`tx_dout = timecode_s[4];`
437			`end`
438			`else if(global_counter_transfer[3:0] == 4'd11)`
439			`begin`
440			`tx_dout = timecode_s[5];`
441			`end`
442			`else if( global_counter_transfer[3:0] == 4'd12)`
443			`begin`
444			`tx_dout = timecode_s[6];`
445			`end`
446			`else if(global_counter_transfer[3:0] == 4'd13)`
447			`begin`
448			`tx_dout = timecode_s[7];`
449			`end`
450			`end`
451			`default:`
452			`begin`
453			`end`
454			`endcase`
455	5	redbear	`end`
456	33	redbear
457	5	redbear	`//strobe`
458			`always@(*)`
459			`begin`
460
461	36	redbear	`tx_sout = last_tx_sout;`
462
463	37	redbear	`if(tx_dout == last_tx_dout)`
464	5	redbear	`begin`
465			`tx_sout = !last_tx_sout;`
466			`end`
467	37	redbear	`else if(tx_dout != last_tx_dout)`
468	5	redbear	`begin`
469			`tx_sout = last_tx_sout;`
470	33	redbear	`end`
471	5	redbear	`end`
472
473	17	redbear	`always@(*)`
474	5	redbear	`begin`
475	37	redbear	`next_state_fct_send = state_fct_send;`
476	17	redbear
477	37	redbear	`case(state_fct_send)`
478			`3'd0:`
479	5	redbear	`begin`
480	37	redbear	`if(send_fct_now)`
481	15	redbear	`begin`
482	37	redbear	`next_state_fct_send = 3'd1;`
483	17	redbear	`end`
484	37	redbear	`else if(fct_sent)`
485	17	redbear	`begin`
486	37	redbear	`next_state_fct_send = 3'd3;`
487	15	redbear	`end`
488	37	redbear	`else`
489			`next_state_fct_send = 3'd0;`
490	5	redbear	`end`
491	37	redbear	`3'd1:`
492			`begin`
493	38	redbear	`if(global_counter_transfer > 4'd0 && global_counter_transfer < 4'd12)`
494	37	redbear	`begin`
495			`next_state_fct_send = 3'd2;`
496			`end`
497			`else`
498			`begin`
499			`next_state_fct_send = 3'd1;`
500			`end`

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