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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 [13:0] timecode_s;
 
        reg [5:0]  last_type;
        reg [8:0]  txdata_flagctrl_tx_last;
        reg [8:0]  tx_data_in;
        reg data_rdy_trnsp;
        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 block_increment;
        reg block_decrement;
        reg char_sent;
 
        //reg block_increment_fct_send;
        //reg block_decrement_fct_send;
        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'd2)
                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'd2)
                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'd2)
                                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'd2)
                                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'd2)
                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'd2)
                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'd2)
                        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'd2)
                                fct_counter_receive <= fct_counter_receive - 6'd1;
                        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_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;
                end
                else
                        next_state_tx = tx_spw_null;
        end
        tx_spw_fct:
        begin
                if(send_fct_tx && fct_flag > 3'd0)
                begin
                        next_state_tx = tx_spw_fct;
                end
                else
                begin
                        if(send_fct_tx && fct_counter_receive > 6'd0)
                        begin
                                if(global_counter_transfer == 4'd7 || 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 if(txwrite_tx && !gotfct_tx && !gotfct_tx && !ready_tx_data && data_rdy_trnsp && 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
                        end
                end
        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(txwrite_tx && !gotfct_tx && !ready_tx_data && data_rdy_trnsp && 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
                                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(txwrite_tx && !gotfct_tx && !ready_tx_data && data_rdy_trnsp && 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;
 
                data_rdy_trnsp <= 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
                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(txwrite_tx && global_counter_transfer == 4'd5)
                        begin
                                tx_data_in <= data_tx_i;
                                data_rdy_trnsp <= 1'b1;
                        end
                        else
                                tx_data_in <= tx_data_in;
 
                        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'd3)
                        begin
                                ready_tx_timecode <= 1'b0;
                                ready_tx_data <= 1'b0;
                        end
                        else
                        begin
                                ready_tx_timecode <= ready_tx_timecode;
                                ready_tx_data <= ready_tx_data;
                        end
 
                        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;
 
                        ready_tx_data <= ready_tx_data;
 
                        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(txwrite_tx && global_counter_transfer == 4'd5)
                        begin
                                tx_data_in <= data_tx_i;
                                data_rdy_trnsp <= 1'b1;
                        end
                        else
                                tx_data_in <= tx_data_in;
 
                        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'd3)
                        begin
                                char_sent <= 1'b0;
                                fct_sent <=  1'b0;
                                ready_tx_timecode <= 1'b0;
                                ready_tx_data <= 1'b0;
                        end
                        else
                        begin
                                ready_tx_timecode <= ready_tx_timecode;
                                ready_tx_data <= ready_tx_data;
                        end
 
                        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_c:
                begin
 
                        last_tx_dout <= tx_dout;
                        last_tx_sout <= tx_sout;
 
                        tx_dout_e <= last_tx_dout;
                        tx_sout_e <= last_tx_sout;
 
                        ready_tx_data <= ready_tx_data;
 
                        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;
                                        ready_tx_data <= 1'b1;
                                        data_rdy_trnsp <= 1'b0;
                                        global_counter_transfer <= 4'd0;
                                end
                                else
                                begin
                                        ready_tx_data <= 1'b0;
                                        ready_tx_timecode <= 1'b0;
                                        global_counter_transfer <= global_counter_transfer + 4'd1;
                                end
 
                                if(global_counter_transfer == 4'd4)
                                        txdata_flagctrl_tx_last <= tx_data_in;
 
 
                        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
 
                                        global_counter_transfer <= 4'd0;
                                        data_rdy_trnsp <= 1'b0;
                                        ready_tx_data <= 1'b1;
                                end
                                else
                                begin
                                        txdata_flagctrl_tx_last <= txdata_flagctrl_tx_last;
 
                                        ready_tx_data <= 1'b0;
                                        ready_tx_timecode <= 1'b0;
                                        global_counter_transfer <= global_counter_transfer + 4'd1;
                                end
 
 
                        end
 
                end
                tx_spw_time_code_c:
                begin
 
                        if(txwrite_tx && global_counter_transfer == 4'd6)
                        begin
                                data_rdy_trnsp <= 1'b1;
                                tx_data_in <= data_tx_i;
                        end
                        else
                                tx_data_in <= tx_data_in;
 
 
                        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
                                ready_tx_data <= 1'b0;
                                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	5	redbear	`reg [13:0] timecode_s;`
95
96			`reg [5:0] last_type;`
97			`reg [8:0] txdata_flagctrl_tx_last;`
98	36	redbear	`reg [8:0] tx_data_in;`
99			`reg data_rdy_trnsp;`
100	5	redbear	`reg [7:0] last_timein_control_flag_tx;`
101	36	redbear	`reg [7:0] tx_tcode_in;`
102			`reg tcode_rdy_trnsp;`
103	5	redbear
104			`reg [2:0] fct_send;`
105			`reg [2:0] fct_flag;`
106	6	redbear
107			`reg [5:0] fct_counter_receive;`
108
109	37	redbear	`//reg block_increment;`
110			`reg block_decrement;`
111			`reg char_sent;`
112
113			`//reg block_increment_fct_send;`
114			`//reg block_decrement_fct_send;`
115			`reg fct_sent;`
116
117	5	redbear	`reg last_tx_dout;`
118			`reg last_tx_sout;`
119
120	33	redbear	`reg tx_dout;`
121			`reg tx_sout;`
122
123			`reg tx_dout_null;`
124			`reg tx_dout_fct;`
125			`reg tx_dout_timecode;`
126			`reg tx_dout_data;`
127
128	5	redbear	`reg [3:0] global_counter_transfer;`
129
130
131	13	redbear
132	5	redbear	`always@(*)`
133			`begin`
134	37	redbear	`tx_dout = last_tx_dout;`
135	5	redbear
136	37	redbear	`case(state_tx)`
137			`tx_spw_start:`
138			`begin`
139			`end`
140			`tx_spw_null,tx_spw_null_c:`
141			`begin`
142			`if(last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
143			`begin`
144			`tx_dout = !(null_s[6]^null_s[0]^null_s[1]);`
145			`end`
146			`else if(last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
147			`begin`
148			`tx_dout = !(null_s[6]^fct_s[0]^fct_s[1]);`
149			`end`
150			`else if(last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
151			`begin`
152			`tx_dout = !(null_s[6]^eop_s[0]^eop_s[1]);`
153			`end`
154			`else if(last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
155			`begin`
156			`tx_dout = !(null_s[6]^eep_s[0]^eep_s[1]);`
157			`end`
158			`else if(last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
159			`begin`
160			`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]);`
161			`end`
162			`else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
163			`begin`
164			`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]);`
165			`end`
166			`else if(global_counter_transfer[3:0] == 4'd1)`
167			`begin`
168			`tx_dout = null_s[6];`
169			`end`
170			`else if(global_counter_transfer[3:0] == 4'd2)`
171			`begin`
172			`tx_dout = null_s[5];`
173			`end`
174			`else if(global_counter_transfer[3:0] == 4'd3)`
175			`begin`
176			`tx_dout = null_s[4];`
177			`end`
178			`else if(global_counter_transfer[3:0] == 4'd4)`
179			`begin`
180			`tx_dout = null_s[3];`
181			`end`
182			`else if(global_counter_transfer[3:0] == 4'd5)`
183			`begin`
184			`tx_dout = null_s[2];`
185			`end`
186			`else if(global_counter_transfer[3:0] == 4'd6)`
187			`begin`
188			`tx_dout = null_s[1];`
189			`end`
190			`else if(global_counter_transfer[3:0] == 4'd7)`
191			`begin`
192			`tx_dout = null_s[0];`
193			`end`
194			`end`
195			`tx_spw_fct,tx_spw_fct_c:`
196			`begin`
197			`if(last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
198			`begin`
199			`tx_dout = !(fct_s[2]^null_s[0]^null_s[1]);`
200			`end`
201			`else if(last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
202			`begin`
203			`tx_dout = !(fct_s[2]^fct_s[0]^fct_s[1]);`
204			`end`
205			`else if(last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
206			`begin`
207			`tx_dout = !(fct_s[2]^eop_s[0]^eop_s[1]);`
208			`end`
209			`else if(last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
210			`begin`
211			`tx_dout = !(fct_s[2]^eep_s[0]^eep_s[1]);`
212			`end`
213			`else if (last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
214			`begin`
215			`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]);`
216			`end`
217			`else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
218			`begin`
219			`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]);`
220			`end`
221			`else if(global_counter_transfer[3:0] == 4'd1)`
222			`begin`
223			`tx_dout = fct_s[2];`
224			`end`
225			`else if(global_counter_transfer[3:0] == 4'd2)`
226			`begin`
227			`tx_dout = fct_s[1];`
228			`end`
229			`else if(global_counter_transfer[3:0] == 4'd3)`
230			`begin`
231			`tx_dout = fct_s[0];`
232			`end`
233			`end`
234			`tx_spw_data_c:`
235			`begin`
236			`if(!tx_data_in[8] && last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
237			`begin`
238			`tx_dout = !(tx_data_in[8]^null_s[0]^null_s[1]);`
239			`end`
240			`else if(!tx_data_in[8] && last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
241			`begin`
242			`tx_dout = !(tx_data_in[8]^fct_s[0]^fct_s[1]);`
243			`end`
244			`else if(!tx_data_in[8] && last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
245			`begin`
246			`tx_dout = !(tx_data_in[8]^eop_s[0]^eop_s[1]);`
247			`end`
248			`else if(!tx_data_in[8] && last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
249			`begin`
250			`tx_dout = !(tx_data_in[8]^eep_s[0]^eep_s[1]);`
251			`end`
252			`else if(!tx_data_in[8] && last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
253			`begin`
254			`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]);`
255			`end`
256			`else if(!tx_data_in[8] && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
257			`begin`
258			`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]);`
259			`end`
260			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
261			`begin`
262			`tx_dout = !(eop_s[2]^null_s[0]^null_s[1]);`
263			`end`
264			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
265			`begin`
266			`tx_dout = !(eop_s[2]^fct_s[0]^fct_s[1]);`
267			`end`
268			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
269			`begin`
270			`tx_dout = !(eop_s[2]^eop_s[0]^eop_s[1]);`
271			`end`
272			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
273			`begin`
274			`tx_dout = !(eop_s[2]^eep_s[0]^eep_s[1]);`
275			`end`
276			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
277			`begin`
278			`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]);`
279			`end`
280			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
281			`begin`
282			`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]);`
283			`end`
284			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
285			`begin`
286			`tx_dout = !(eep_s[2]^null_s[0]^null_s[1]);`
287			`end`
288			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
289			`begin`
290			`tx_dout = !(eep_s[2]^fct_s[0]^fct_s[1]);`
291			`end`
292			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
293			`begin`
294			`tx_dout = !(eep_s[2]^eop_s[0]^eop_s[1]);`
295			`end`
296			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
297			`begin`
298			`tx_dout = !(eep_s[2]^eep_s[0]^eep_s[1]);`
299			`end`
300			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
301			`begin`
302			`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]);`
303			`end`
304			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
305			`begin`
306			`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]);`
307			`end`
308			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd1)`
309			`begin`
310			`tx_dout = tx_data_in[8];`
311			`end`
312			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd2)`
313			`begin`
314			`tx_dout = tx_data_in[0];`
315			`end`
316			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd3)`
317			`begin`
318			`tx_dout = tx_data_in[1];`
319			`end`
320			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd4)`
321			`begin`
322			`tx_dout = tx_data_in[2];`
323			`end`
324			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd5)`
325			`begin`
326			`tx_dout = tx_data_in[3];`
327			`end`
328			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd6)`
329			`begin`
330			`tx_dout = tx_data_in[4];`
331			`end`
332			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd7)`
333			`begin`
334			`tx_dout = tx_data_in[5];`
335			`end`
336			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd8)`
337			`begin`
338			`tx_dout = tx_data_in[6];`
339			`end`
340			`else if(!tx_data_in[8] && global_counter_transfer[3:0] == 4'd9)`
341			`begin`
342			`tx_dout = tx_data_in[7];`
343			`end`
344			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd1)`
345			`begin`
346			`tx_dout = eep_s[2];`
347			`end`
348			`else if( tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd2)`
349			`begin`
350			`tx_dout = eep_s[1];`
351			`end`
352			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd3)`
353			`begin`
354			`tx_dout = eep_s[0];`
355			`end`
356			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd1)`
357			`begin`
358			`tx_dout = eop_s[2];`
359			`end`
360			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd2)`
361			`begin`
362			`tx_dout = eop_s[1];`
363			`end`
364			`else if(tx_data_in[8] && tx_data_in[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd3)`
365			`begin`
366			`tx_dout = eop_s[0];`
367			`end`
368			`end`
369			`tx_spw_time_code_c:`
370			`begin`
371			`if(last_type == NULL && global_counter_transfer[3:0] == 4'd0)`
372			`begin`
373			`tx_dout = !(timecode_s[12]^null_s[0]^null_s[1]);`
374			`end`
375			`else if(last_type == FCT && global_counter_transfer[3:0] == 4'd0)`
376			`begin`
377			`tx_dout = !(timecode_s[12]^fct_s[0]^fct_s[1]);`
378			`end`
379			`else if (last_type == EOP && global_counter_transfer[3:0] == 4'd0)`
380			`begin`
381			`tx_dout = !(timecode_s[12]^eop_s[0]^eop_s[1]);`
382			`end`
383			`else if( last_type == EEP && global_counter_transfer[3:0] == 4'd0)`
384			`begin`
385			`tx_dout = !(timecode_s[12]^eep_s[0]^eep_s[1]);`
386			`end`
387			`else if( last_type == DATA && global_counter_transfer[3:0] == 4'd0)`
388			`begin`
389			`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]);`
390			`end`
391			`else if( last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)`
392			`begin`
393			`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]);`
394			`end`
395			`else if( global_counter_transfer[3:0] == 4'd1)`
396			`begin`
397			`tx_dout = timecode_s[12];`
398			`end`
399			`else if( global_counter_transfer[3:0] == 4'd2)`
400			`begin`
401			`tx_dout = timecode_s[11];`
402			`end`
403			`else if( global_counter_transfer[3:0] == 4'd3)`
404			`begin`
405			`tx_dout = timecode_s[10];`
406			`end`
407			`else if( global_counter_transfer[3:0] == 4'd4)`
408			`begin`
409			`tx_dout = timecode_s[9];`
410			`end`
411			`else if( global_counter_transfer[3:0] == 4'd5)`
412			`begin`
413			`tx_dout = timecode_s[8];`
414			`end`
415			`else if( global_counter_transfer[3:0] == 4'd6)`
416			`begin`
417			`tx_dout = timecode_s[0];`
418			`end`
419			`else if( global_counter_transfer[3:0] == 4'd7)`
420			`begin`
421			`tx_dout = timecode_s[1];`
422			`end`
423			`else if( global_counter_transfer[3:0] == 4'd8)`
424			`begin`
425			`tx_dout = timecode_s[2];`
426			`end`
427			`else if(global_counter_transfer[3:0] == 4'd9)`
428			`begin`
429			`tx_dout = timecode_s[3];`
430			`end`
431			`else if(global_counter_transfer[3:0] == 4'd10)`
432			`begin`
433			`tx_dout = timecode_s[4];`
434			`end`
435			`else if(global_counter_transfer[3:0] == 4'd11)`
436			`begin`
437			`tx_dout = timecode_s[5];`
438			`end`
439			`else if( global_counter_transfer[3:0] == 4'd12)`
440			`begin`
441			`tx_dout = timecode_s[6];`
442			`end`
443			`else if(global_counter_transfer[3:0] == 4'd13)`
444			`begin`
445			`tx_dout = timecode_s[7];`
446			`end`
447			`end`
448			`default:`
449			`begin`
450			`end`
451			`endcase`
452	5	redbear	`end`
453	33	redbear
454	5	redbear	`//strobe`
455			`always@(*)`
456			`begin`
457
458	36	redbear	`tx_sout = last_tx_sout;`
459
460	37	redbear	`if(tx_dout == last_tx_dout)`
461	5	redbear	`begin`
462			`tx_sout = !last_tx_sout;`
463			`end`
464	37	redbear	`else if(tx_dout != last_tx_dout)`
465	5	redbear	`begin`
466			`tx_sout = last_tx_sout;`
467	33	redbear	`end`
468	5	redbear	`end`
469
470	17	redbear	`always@(*)`
471	5	redbear	`begin`
472	37	redbear	`next_state_fct_send = state_fct_send;`
473	17	redbear
474	37	redbear	`case(state_fct_send)`
475			`3'd0:`
476	5	redbear	`begin`
477	37	redbear	`if(send_fct_now)`
478	15	redbear	`begin`
479	37	redbear	`next_state_fct_send = 3'd1;`
480	17	redbear	`end`
481	37	redbear	`else if(fct_sent)`
482	17	redbear	`begin`
483	37	redbear	`next_state_fct_send = 3'd3;`
484	15	redbear	`end`
485	37	redbear	`else`
486			`next_state_fct_send = 3'd0;`
487	5	redbear	`end`
488	37	redbear	`3'd1:`
489			`begin`
490			`if(global_counter_transfer == 4'd2)`
491			`begin`
492			`next_state_fct_send = 3'd2;`
493			`end`
494			`else`
495			`begin`
496			`next_state_fct_send = 3'd1;`
497			`end`
498			`end`
499			`3'd2:`
500			`begin`

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