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[/] [spacewiresystemc/] [trunk/] [rtl/] [RTL_VB/] [tx_spw.v] - Blame information for rev 5

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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,
                output reg tx_sout,
                //
                output  ready_tx_data,
                output  ready_tx_timecode
 
                );
 
localparam [2:0] tx_spw_start     = 3'b000,
                 tx_spw_null      = 3'b001,
                 tx_spw_null_fct  = 3'b010,
                 tx_spw_full      = 3'b100;
 
localparam [5:0] NULL     = 6'b000001,
                 FCT      = 6'b000010,
                 EOP      = 6'b000100,
                 EEP      = 6'b001000,
                 DATA     = 6'b010000,
                 TIMEC    = 6'b100000;
 
        reg [2:0] state_tx;
        reg [2:0] next_state_tx;
 
        reg [7:0]  null_s;
        reg [3:0]  fct_s;
        reg [3:0]  eop_s;
        reg [3:0]  eep_s;
        reg [13:0] timecode_s;
 
        reg [5:0]  last_type;
        reg [8:0]  txdata_flagctrl_tx_last;
        reg [7:0]  last_timein_control_flag_tx;
 
        reg first_time;
 
        reg enable_null;
        reg enable_fct;
        reg enable_n_char;
        reg enable_time_code;
 
        reg [2:0] fct_send;
        reg [2:0] fct_flag;
        reg [5:0] fct_counter;
        reg last_tx_dout;
        reg last_tx_sout;
        //reg first_counter_ctr;
 
        reg [3:0] global_counter_transfer;
 
assign ready_tx_timecode = (enable_time_code & global_counter_transfer == 14)?1'b1:1'b0;
 
assign ready_tx_data     = (enable_n_char & global_counter_transfer == 4'd10  & !data_tx_i[8])?1'b1:
                           (enable_n_char & global_counter_transfer == 4'd4   &  data_tx_i[8])?1'b1:1'b0;
 
always@(*)
begin
        tx_dout = 1'b0;
 
         if(!enable_tx)
         begin
                tx_dout = 1'b0;
         end
         else if( enable_null & first_time  & global_counter_transfer == 4'd0)
         begin
                tx_dout = null_s[7];
         end
         else if( enable_null & !first_time & last_type == NULL  & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(null_s[6]^null_s[0]^null_s[1]);
         end
         else if( enable_null & !first_time & last_type == FCT   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(null_s[6]^fct_s[0]^fct_s[1]);
         end
         else if( enable_null & !first_time & last_type == EOP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(null_s[6]^eop_s[0]^eop_s[1]);
         end
         else if( enable_null & !first_time & last_type == EEP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(null_s[6]^eep_s[0]^eep_s[1]);
         end
         else if( enable_null & !first_time & last_type == DATA  & global_counter_transfer == 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( enable_null & !first_time & last_type == TIMEC & global_counter_transfer == 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( enable_null & !first_time & global_counter_transfer == 4'd1)
         begin
                tx_dout = null_s[6];
         end
         else if( enable_null & !first_time & global_counter_transfer == 4'd2)
         begin
                tx_dout = null_s[5];
         end
         else if( enable_null & !first_time & global_counter_transfer == 4'd3)
         begin
                tx_dout = null_s[4];
         end
         else if( enable_null & !first_time & global_counter_transfer == 4'd4)
         begin
                tx_dout = null_s[3];
         end
         else if( enable_null & !first_time & global_counter_transfer == 4'd5)
         begin
                tx_dout = null_s[2];
         end
         else if( enable_null & !first_time & global_counter_transfer == 4'd6)
         begin
                tx_dout = null_s[1];
         end
         else if( enable_null & !first_time & global_counter_transfer == 4'd7)
         begin
                tx_dout = null_s[0];
         end
         else if( enable_fct  & !first_time & last_type == NULL  & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(fct_s[2]^null_s[0]^null_s[1]);
         end
         else if( enable_fct  & !first_time & last_type == FCT   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(fct_s[2]^fct_s[0]^fct_s[1]);
         end
         else if( enable_fct  & !first_time & last_type == EOP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(fct_s[2]^eop_s[0]^eop_s[1]);
         end
         else if( enable_fct  & !first_time & last_type == EEP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(fct_s[2]^eep_s[0]^eep_s[1]);
         end
         else if ( enable_fct  & !first_time & last_type == DATA  & global_counter_transfer == 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( enable_fct  & !first_time & last_type == TIMEC & global_counter_transfer == 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( enable_fct  & !first_time & global_counter_transfer == 4'd1)
         begin
                tx_dout = fct_s[2];
         end
         else if( enable_fct  & !first_time & global_counter_transfer == 4'd2)
         begin
                tx_dout = fct_s[1];
         end
         else if( enable_fct  & !first_time & global_counter_transfer == 4'd3)
         begin
                tx_dout = fct_s[0];
         end
         else if( enable_time_code & !first_time & last_type == NULL  & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(timecode_s[12]^null_s[0]^null_s[1]);
         end
         else if( enable_time_code & !first_time & last_type == FCT   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(timecode_s[12]^fct_s[0]^fct_s[1]);
         end
         else if ( enable_time_code & !first_time & last_type == EOP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(timecode_s[12]^eop_s[0]^eop_s[1]);
         end
         else if( enable_time_code & !first_time & last_type == EEP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(timecode_s[12]^eep_s[0]^eep_s[1]);
         end
         else if( enable_time_code & !first_time & last_type == DATA  & global_counter_transfer == 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( enable_time_code & !first_time & last_type == TIMEC & global_counter_transfer == 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( enable_time_code & !first_time & global_counter_transfer == 4'd1)
         begin
                tx_dout = timecode_s[12];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd2)
         begin
                tx_dout = timecode_s[11];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd3)
         begin
                tx_dout = timecode_s[10];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd4)
         begin
                tx_dout = timecode_s[9];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd5)
         begin
                tx_dout = timecode_s[8];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd6)
         begin
                tx_dout = timecode_s[7];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd7)
         begin
                tx_dout = timecode_s[6];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd8)
         begin
                tx_dout = timecode_s[5];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd9)
         begin
                tx_dout = timecode_s[4];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd10)
         begin
                tx_dout = timecode_s[3];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd11)
         begin
                tx_dout = timecode_s[2];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd12)
         begin
                tx_dout = timecode_s[1];
         end
         else if( enable_time_code & !first_time & global_counter_transfer == 4'd13)
         begin
                tx_dout = timecode_s[0];
         end
         else if( enable_n_char    & !first_time & last_type == NULL  & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(data_tx_i[8]^null_s[0]^null_s[1]);
         end
         else if( enable_n_char    & !first_time & last_type == FCT   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(data_tx_i[8]^fct_s[0]^fct_s[1]);
         end
         else if( enable_n_char    & !first_time & last_type == EOP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(data_tx_i[8]^eop_s[0]^eop_s[1]);
         end
         else if( enable_n_char    & !first_time & last_type == EEP   & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(data_tx_i[8]^eep_s[0]^eep_s[1]);
         end
         else if( enable_n_char    & !first_time & last_type == DATA  & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(data_tx_i[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( enable_n_char    & !first_time & last_type == TIMEC & global_counter_transfer == 4'd0)
         begin
                tx_dout = !(data_tx_i[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( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd1)
         begin
                tx_dout = data_tx_i[8];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd2)
         begin
                tx_dout = data_tx_i[0];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd3)
         begin
                tx_dout = data_tx_i[1];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd4)
         begin
                tx_dout = data_tx_i[2];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd5)
         begin
                tx_dout = data_tx_i[3];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd6)
         begin
                tx_dout = data_tx_i[4];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd7)
         begin
                tx_dout = data_tx_i[5];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd8)
         begin
                tx_dout = data_tx_i[6];
         end
         else if( enable_n_char    & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd9)
         begin
                tx_dout = data_tx_i[7];
         end
         else if( enable_n_char    &  data_tx_i[8] & data_tx_i[1:0] == 2'b00 & !first_time & global_counter_transfer == 4'd1)
         begin
                tx_dout = eop_s[2];
         end
         else if( enable_n_char    &  data_tx_i[8] & data_tx_i[1:0] == 2'b00 & !first_time & global_counter_transfer == 4'd2)
         begin
                tx_dout = eop_s[1];
         end
         else if( enable_n_char    &  data_tx_i[8] & data_tx_i[1:0] == 2'b00 & !first_time & global_counter_transfer == 4'd3)
         begin
                tx_dout = eop_s[0];
         end
         else if( enable_n_char    &  data_tx_i[8] & data_tx_i[1:0] == 2'b01 & !first_time & global_counter_transfer == 4'd1)
         begin
                tx_dout = eep_s[2];
         end
         else if( enable_n_char    &  data_tx_i[8] & data_tx_i[1:0] == 2'b01 & !first_time & global_counter_transfer == 4'd2)
         begin
                tx_dout = eep_s[1];
         end
         else if( enable_n_char    &  data_tx_i[8] & data_tx_i[1:0] == 2'b01 & !first_time & global_counter_transfer == 4'd3)
         begin
                tx_dout = eep_s[0];
         end
end
 
//strobe
always@(*)
begin
        tx_sout = 1'b0;
 
        if(!enable_tx)
        begin
                tx_sout = 1'b0;
        end
        else if((enable_null | enable_fct) && tx_dout == last_tx_dout)
        begin
                tx_sout = !last_tx_sout;
        end
        else if((enable_null | enable_fct) && tx_dout != last_tx_dout)
        begin
                tx_sout = last_tx_sout;
        end
end
 
//slots open in another side
always@(posedge send_fct_tx or negedge enable_tx)
begin
 
        if(!enable_tx)
        begin
                fct_counter <= {6{1'b0}};
        end
        else if(gotfct_tx)
        begin
                fct_counter <= fct_counter + 6'd8;
        end
        else if(enable_n_char)
        begin
                fct_counter <= fct_counter - 6'd1;
        end
 
end
 
 
//slots open in our side
always@(posedge send_fct_now or negedge enable_tx)
begin
 
        if(!enable_tx)
        begin
                fct_send <= {3{1'b1}};
        end
        else
        begin
                fct_send <= fct_send + 6'd1;
        end
 
end
 
 
always@(*)
begin
 
        next_state_tx = state_tx;
 
        enable_null      = 1'b0;
        enable_fct       = 1'b0;
        enable_n_char    = 1'b0;
        enable_time_code = 1'b0;
 
        case(state_tx)
        tx_spw_start:
        begin
                if(send_null_tx && enable_tx)
                begin
                        if(global_counter_transfer == 4'd7)
                                next_state_tx = tx_spw_null;
 
                        enable_null = 1'b1;
                end
                else
                begin
                        next_state_tx = tx_spw_start;
                end
        end
        tx_spw_null:
        begin
                enable_null = 1'b1;
 
                if(global_counter_transfer == 4'd7)
                begin
                        if(send_null_tx && send_fct_tx && enable_tx)
                                next_state_tx = tx_spw_null_fct;
                        else
                                next_state_tx = tx_spw_null;
                end
 
        end
        tx_spw_null_fct:
        begin
 
                enable_null   = 1'b1;
                next_state_tx = tx_spw_null_fct;
 
                if(send_fct_tx && fct_flag != 3'd7)
                begin
                        enable_null = 1'b0;
                        enable_fct = 1'b1;
                end
                else
                begin
                        enable_fct = 1'b0;
 
                        if(send_fct_tx && gotfct_tx)
                        begin
                                if(global_counter_transfer == 4'd7)
                                        next_state_tx =  tx_spw_full;
                        end
 
                end
        end
        tx_spw_full:
        begin
 
                enable_null = 1'b1;
 
                if(tickin_tx)
                begin
                        if(global_counter_transfer == 4'd7 || global_counter_transfer == 4'd9 || global_counter_transfer == 4'd13 || global_counter_transfer == 4'd3)
                                enable_time_code = 1'b1;
 
                        enable_null = 1'b0;
                end
                else if(fct_send > 3'd0)
                begin
                        if(global_counter_transfer == 4'd7 || global_counter_transfer == 4'd9 || global_counter_transfer == 4'd13 || global_counter_transfer == 4'd3)
                                enable_fct  = 1'b1;
 
                        enable_null = 1'b0;
                end
                else if(txwrite_tx && fct_counter > 6'd0)
                begin
                        if(global_counter_transfer == 4'd7 || global_counter_transfer == 4'd9 || global_counter_transfer == 4'd13 || global_counter_transfer == 4'd3)
                                enable_n_char = 1'b1;
 
                        enable_null = 1'b0;
                end
 
        end
        endcase
 
end
 
always@(posedge pclk_tx)
begin
        if(!enable_tx)
        begin
                null_s <= 8'h74;
                fct_s  <= 4'h4;
                eop_s  <= 4'h5;
                eep_s  <= 4'h6;
                timecode_s <= 14'h1e00;
 
                fct_flag <= 3'd0;
                first_time <= 1'b1;
                last_type  <= NULL;
 
                global_counter_transfer <= 4'd0;
                txdata_flagctrl_tx_last <= 9'd0;
                last_timein_control_flag_tx <= 8'd0;
                last_tx_dout      <= 1'b0;
                last_tx_sout      <= 1'b0;
                state_tx <= tx_spw_start;
        end
        else
        begin
 
                state_tx <= next_state_tx;
                last_tx_dout <= tx_dout;
                last_tx_sout <= tx_sout;
 
                if(enable_null)
                begin
                        fct_flag<= fct_flag;
                        if(first_time)
                        begin
                                first_time <= 1'b0;
 
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
                        else if(global_counter_transfer != 4'd7)
                        begin
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
                        else
                        begin
                                global_counter_transfer <= 4'd0;
                        end
                end
                else if(enable_fct)
                begin
                        if(global_counter_transfer != 4'd3)
                        begin
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                        end
                        else
                        begin
                                global_counter_transfer <= 4'd0;
                                fct_flag <= fct_flag + 3'd1;
                        end
                end
                else if(enable_time_code)
                begin
                        fct_flag<= fct_flag;
                        if(global_counter_transfer < 4'd13)
                        begin
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                                last_timein_control_flag_tx <= timecode_tx_i;
                        end
                        else
                        begin
                                global_counter_transfer <= 4'd0;
                        end
                end
                else if(enable_n_char)
                begin
                        fct_flag<= fct_flag;
                        if(global_counter_transfer < 4'd9 && !data_tx_i[8])
                        begin
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                                txdata_flagctrl_tx_last <= data_tx_i;
                        end
                        else if(global_counter_transfer < 4'd3 && data_tx_i[8])
                        begin
                                global_counter_transfer <= global_counter_transfer + 4'd1;
                                txdata_flagctrl_tx_last <= data_tx_i;
                        end
                        else
                        begin
                                global_counter_transfer <= 4'd0;
                        end
                end
 
        end
end
 
endmodule

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[/] [spacewiresystemc/] [trunk/] [rtl/] [RTL_VB/] [tx_spw.v] - Blame information for rev 5

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			`output reg tx_dout,`
54			`output reg tx_sout,`
55			`//`
56			`output ready_tx_data,`
57			`output ready_tx_timecode`
58
59			`);`
60
61			`localparam [2:0] tx_spw_start = 3'b000,`
62			`tx_spw_null = 3'b001,`
63			`tx_spw_null_fct = 3'b010,`
64			`tx_spw_full = 3'b100;`
65
66			`localparam [5:0] NULL = 6'b000001,`
67			`FCT = 6'b000010,`
68			`EOP = 6'b000100,`
69			`EEP = 6'b001000,`
70			`DATA = 6'b010000,`
71			`TIMEC = 6'b100000;`
72
73			`reg [2:0] state_tx;`
74			`reg [2:0] next_state_tx;`
75
76			`reg [7:0] null_s;`
77			`reg [3:0] fct_s;`
78			`reg [3:0] eop_s;`
79			`reg [3:0] eep_s;`
80			`reg [13:0] timecode_s;`
81
82			`reg [5:0] last_type;`
83			`reg [8:0] txdata_flagctrl_tx_last;`
84			`reg [7:0] last_timein_control_flag_tx;`
85
86			`reg first_time;`
87
88			`reg enable_null;`
89			`reg enable_fct;`
90			`reg enable_n_char;`
91			`reg enable_time_code;`
92
93			`reg [2:0] fct_send;`
94			`reg [2:0] fct_flag;`
95			`reg [5:0] fct_counter;`
96			`reg last_tx_dout;`
97			`reg last_tx_sout;`
98			`//reg first_counter_ctr;`
99
100			`reg [3:0] global_counter_transfer;`
101
102			`assign ready_tx_timecode = (enable_time_code & global_counter_transfer == 14)?1'b1:1'b0;`
103
104			`assign ready_tx_data = (enable_n_char & global_counter_transfer == 4'd10 & !data_tx_i[8])?1'b1:`
105			`(enable_n_char & global_counter_transfer == 4'd4 & data_tx_i[8])?1'b1:1'b0;`
106
107			`always@(*)`
108			`begin`
109			`tx_dout = 1'b0;`
110
111			`if(!enable_tx)`
112			`begin`
113			`tx_dout = 1'b0;`
114			`end`
115			`else if( enable_null & first_time & global_counter_transfer == 4'd0)`
116			`begin`
117			`tx_dout = null_s[7];`
118			`end`
119			`else if( enable_null & !first_time & last_type == NULL & global_counter_transfer == 4'd0)`
120			`begin`
121			`tx_dout = !(null_s[6]^null_s[0]^null_s[1]);`
122			`end`
123			`else if( enable_null & !first_time & last_type == FCT & global_counter_transfer == 4'd0)`
124			`begin`
125			`tx_dout = !(null_s[6]^fct_s[0]^fct_s[1]);`
126			`end`
127			`else if( enable_null & !first_time & last_type == EOP & global_counter_transfer == 4'd0)`
128			`begin`
129			`tx_dout = !(null_s[6]^eop_s[0]^eop_s[1]);`
130			`end`
131			`else if( enable_null & !first_time & last_type == EEP & global_counter_transfer == 4'd0)`
132			`begin`
133			`tx_dout = !(null_s[6]^eep_s[0]^eep_s[1]);`
134			`end`
135			`else if( enable_null & !first_time & last_type == DATA & global_counter_transfer == 4'd0)`
136			`begin`
137			`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]);`
138			`end`
139			`else if( enable_null & !first_time & last_type == TIMEC & global_counter_transfer == 4'd0)`
140			`begin`
141			`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]);`
142			`end`
143			`else if( enable_null & !first_time & global_counter_transfer == 4'd1)`
144			`begin`
145			`tx_dout = null_s[6];`
146			`end`
147			`else if( enable_null & !first_time & global_counter_transfer == 4'd2)`
148			`begin`
149			`tx_dout = null_s[5];`
150			`end`
151			`else if( enable_null & !first_time & global_counter_transfer == 4'd3)`
152			`begin`
153			`tx_dout = null_s[4];`
154			`end`
155			`else if( enable_null & !first_time & global_counter_transfer == 4'd4)`
156			`begin`
157			`tx_dout = null_s[3];`
158			`end`
159			`else if( enable_null & !first_time & global_counter_transfer == 4'd5)`
160			`begin`
161			`tx_dout = null_s[2];`
162			`end`
163			`else if( enable_null & !first_time & global_counter_transfer == 4'd6)`
164			`begin`
165			`tx_dout = null_s[1];`
166			`end`
167			`else if( enable_null & !first_time & global_counter_transfer == 4'd7)`
168			`begin`
169			`tx_dout = null_s[0];`
170			`end`
171			`else if( enable_fct & !first_time & last_type == NULL & global_counter_transfer == 4'd0)`
172			`begin`
173			`tx_dout = !(fct_s[2]^null_s[0]^null_s[1]);`
174			`end`
175			`else if( enable_fct & !first_time & last_type == FCT & global_counter_transfer == 4'd0)`
176			`begin`
177			`tx_dout = !(fct_s[2]^fct_s[0]^fct_s[1]);`
178			`end`
179			`else if( enable_fct & !first_time & last_type == EOP & global_counter_transfer == 4'd0)`
180			`begin`
181			`tx_dout = !(fct_s[2]^eop_s[0]^eop_s[1]);`
182			`end`
183			`else if( enable_fct & !first_time & last_type == EEP & global_counter_transfer == 4'd0)`
184			`begin`
185			`tx_dout = !(fct_s[2]^eep_s[0]^eep_s[1]);`
186			`end`
187			`else if ( enable_fct & !first_time & last_type == DATA & global_counter_transfer == 4'd0)`
188			`begin`
189			`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]);`
190			`end`
191			`else if( enable_fct & !first_time & last_type == TIMEC & global_counter_transfer == 4'd0)`
192			`begin`
193			`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]);`
194			`end`
195			`else if( enable_fct & !first_time & global_counter_transfer == 4'd1)`
196			`begin`
197			`tx_dout = fct_s[2];`
198			`end`
199			`else if( enable_fct & !first_time & global_counter_transfer == 4'd2)`
200			`begin`
201			`tx_dout = fct_s[1];`
202			`end`
203			`else if( enable_fct & !first_time & global_counter_transfer == 4'd3)`
204			`begin`
205			`tx_dout = fct_s[0];`
206			`end`
207			`else if( enable_time_code & !first_time & last_type == NULL & global_counter_transfer == 4'd0)`
208			`begin`
209			`tx_dout = !(timecode_s[12]^null_s[0]^null_s[1]);`
210			`end`
211			`else if( enable_time_code & !first_time & last_type == FCT & global_counter_transfer == 4'd0)`
212			`begin`
213			`tx_dout = !(timecode_s[12]^fct_s[0]^fct_s[1]);`
214			`end`
215			`else if ( enable_time_code & !first_time & last_type == EOP & global_counter_transfer == 4'd0)`
216			`begin`
217			`tx_dout = !(timecode_s[12]^eop_s[0]^eop_s[1]);`
218			`end`
219			`else if( enable_time_code & !first_time & last_type == EEP & global_counter_transfer == 4'd0)`
220			`begin`
221			`tx_dout = !(timecode_s[12]^eep_s[0]^eep_s[1]);`
222			`end`
223			`else if( enable_time_code & !first_time & last_type == DATA & global_counter_transfer == 4'd0)`
224			`begin`
225			`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]);`
226			`end`
227			`else if( enable_time_code & !first_time & last_type == TIMEC & global_counter_transfer == 4'd0)`
228			`begin`
229			`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]);`
230			`end`
231			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd1)`
232			`begin`
233			`tx_dout = timecode_s[12];`
234			`end`
235			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd2)`
236			`begin`
237			`tx_dout = timecode_s[11];`
238			`end`
239			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd3)`
240			`begin`
241			`tx_dout = timecode_s[10];`
242			`end`
243			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd4)`
244			`begin`
245			`tx_dout = timecode_s[9];`
246			`end`
247			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd5)`
248			`begin`
249			`tx_dout = timecode_s[8];`
250			`end`
251			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd6)`
252			`begin`
253			`tx_dout = timecode_s[7];`
254			`end`
255			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd7)`
256			`begin`
257			`tx_dout = timecode_s[6];`
258			`end`
259			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd8)`
260			`begin`
261			`tx_dout = timecode_s[5];`
262			`end`
263			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd9)`
264			`begin`
265			`tx_dout = timecode_s[4];`
266			`end`
267			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd10)`
268			`begin`
269			`tx_dout = timecode_s[3];`
270			`end`
271			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd11)`
272			`begin`
273			`tx_dout = timecode_s[2];`
274			`end`
275			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd12)`
276			`begin`
277			`tx_dout = timecode_s[1];`
278			`end`
279			`else if( enable_time_code & !first_time & global_counter_transfer == 4'd13)`
280			`begin`
281			`tx_dout = timecode_s[0];`
282			`end`
283			`else if( enable_n_char & !first_time & last_type == NULL & global_counter_transfer == 4'd0)`
284			`begin`
285			`tx_dout = !(data_tx_i[8]^null_s[0]^null_s[1]);`
286			`end`
287			`else if( enable_n_char & !first_time & last_type == FCT & global_counter_transfer == 4'd0)`
288			`begin`
289			`tx_dout = !(data_tx_i[8]^fct_s[0]^fct_s[1]);`
290			`end`
291			`else if( enable_n_char & !first_time & last_type == EOP & global_counter_transfer == 4'd0)`
292			`begin`
293			`tx_dout = !(data_tx_i[8]^eop_s[0]^eop_s[1]);`
294			`end`
295			`else if( enable_n_char & !first_time & last_type == EEP & global_counter_transfer == 4'd0)`
296			`begin`
297			`tx_dout = !(data_tx_i[8]^eep_s[0]^eep_s[1]);`
298			`end`
299			`else if( enable_n_char & !first_time & last_type == DATA & global_counter_transfer == 4'd0)`
300			`begin`
301			`tx_dout = !(data_tx_i[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]);`
302			`end`
303			`else if( enable_n_char & !first_time & last_type == TIMEC & global_counter_transfer == 4'd0)`
304			`begin`
305			`tx_dout = !(data_tx_i[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]);`
306			`end`
307			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd1)`
308			`begin`
309			`tx_dout = data_tx_i[8];`
310			`end`
311			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd2)`
312			`begin`
313			`tx_dout = data_tx_i[0];`
314			`end`
315			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd3)`
316			`begin`
317			`tx_dout = data_tx_i[1];`
318			`end`
319			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd4)`
320			`begin`
321			`tx_dout = data_tx_i[2];`
322			`end`
323			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd5)`
324			`begin`
325			`tx_dout = data_tx_i[3];`
326			`end`
327			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd6)`
328			`begin`
329			`tx_dout = data_tx_i[4];`
330			`end`
331			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd7)`
332			`begin`
333			`tx_dout = data_tx_i[5];`
334			`end`
335			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd8)`
336			`begin`
337			`tx_dout = data_tx_i[6];`
338			`end`
339			`else if( enable_n_char & !data_tx_i[8] & !first_time & global_counter_transfer == 4'd9)`
340			`begin`
341			`tx_dout = data_tx_i[7];`
342			`end`
343			`else if( enable_n_char & data_tx_i[8] & data_tx_i[1:0] == 2'b00 & !first_time & global_counter_transfer == 4'd1)`
344			`begin`
345			`tx_dout = eop_s[2];`
346			`end`
347			`else if( enable_n_char & data_tx_i[8] & data_tx_i[1:0] == 2'b00 & !first_time & global_counter_transfer == 4'd2)`
348			`begin`
349			`tx_dout = eop_s[1];`
350			`end`
351			`else if( enable_n_char & data_tx_i[8] & data_tx_i[1:0] == 2'b00 & !first_time & global_counter_transfer == 4'd3)`
352			`begin`
353			`tx_dout = eop_s[0];`
354			`end`
355			`else if( enable_n_char & data_tx_i[8] & data_tx_i[1:0] == 2'b01 & !first_time & global_counter_transfer == 4'd1)`
356			`begin`
357			`tx_dout = eep_s[2];`
358			`end`
359			`else if( enable_n_char & data_tx_i[8] & data_tx_i[1:0] == 2'b01 & !first_time & global_counter_transfer == 4'd2)`
360			`begin`
361			`tx_dout = eep_s[1];`
362			`end`
363			`else if( enable_n_char & data_tx_i[8] & data_tx_i[1:0] == 2'b01 & !first_time & global_counter_transfer == 4'd3)`
364			`begin`
365			`tx_dout = eep_s[0];`
366			`end`
367			`end`
368
369			`//strobe`
370			`always@(*)`
371			`begin`
372			`tx_sout = 1'b0;`
373
374			`if(!enable_tx)`
375			`begin`
376			`tx_sout = 1'b0;`
377			`end`
378			`else if((enable_null \| enable_fct) && tx_dout == last_tx_dout)`
379			`begin`
380			`tx_sout = !last_tx_sout;`
381			`end`
382			`else if((enable_null \| enable_fct) && tx_dout != last_tx_dout)`
383			`begin`
384			`tx_sout = last_tx_sout;`
385			`end`
386			`end`
387
388			`//slots open in another side`
389			`always@(posedge send_fct_tx or negedge enable_tx)`
390			`begin`
391
392			`if(!enable_tx)`
393			`begin`
394			`fct_counter <= {6{1'b0}};`
395			`end`
396			`else if(gotfct_tx)`
397			`begin`
398			`fct_counter <= fct_counter + 6'd8;`
399			`end`
400			`else if(enable_n_char)`
401			`begin`
402			`fct_counter <= fct_counter - 6'd1;`
403			`end`
404
405			`end`
406
407
408			`//slots open in our side`
409			`always@(posedge send_fct_now or negedge enable_tx)`
410			`begin`
411
412			`if(!enable_tx)`
413			`begin`
414			`fct_send <= {3{1'b1}};`
415			`end`
416			`else`
417			`begin`
418			`fct_send <= fct_send + 6'd1;`
419			`end`
420
421			`end`
422
423
424			`always@(*)`
425			`begin`
426
427			`next_state_tx = state_tx;`
428
429			`enable_null = 1'b0;`
430			`enable_fct = 1'b0;`
431			`enable_n_char = 1'b0;`
432			`enable_time_code = 1'b0;`
433
434			`case(state_tx)`
435			`tx_spw_start:`
436			`begin`
437			`if(send_null_tx && enable_tx)`
438			`begin`
439			`if(global_counter_transfer == 4'd7)`
440			`next_state_tx = tx_spw_null;`
441
442			`enable_null = 1'b1;`
443			`end`
444			`else`
445			`begin`
446			`next_state_tx = tx_spw_start;`
447			`end`
448			`end`
449			`tx_spw_null:`
450			`begin`
451			`enable_null = 1'b1;`
452
453			`if(global_counter_transfer == 4'd7)`
454			`begin`
455			`if(send_null_tx && send_fct_tx && enable_tx)`
456			`next_state_tx = tx_spw_null_fct;`
457			`else`
458			`next_state_tx = tx_spw_null;`
459			`end`
460
461			`end`
462			`tx_spw_null_fct:`
463			`begin`
464
465			`enable_null = 1'b1;`
466			`next_state_tx = tx_spw_null_fct;`
467
468			`if(send_fct_tx && fct_flag != 3'd7)`
469			`begin`
470			`enable_null = 1'b0;`
471			`enable_fct = 1'b1;`
472			`end`
473			`else`
474			`begin`
475			`enable_fct = 1'b0;`
476
477			`if(send_fct_tx && gotfct_tx)`
478			`begin`
479			`if(global_counter_transfer == 4'd7)`
480			`next_state_tx = tx_spw_full;`
481			`end`
482
483			`end`
484			`end`
485			`tx_spw_full:`
486			`begin`
487
488			`enable_null = 1'b1;`
489
490			`if(tickin_tx)`
491			`begin`
492			`if(global_counter_transfer == 4'd7 \|\| global_counter_transfer == 4'd9 \|\| global_counter_transfer == 4'd13 \|\| global_counter_transfer == 4'd3)`
493			`enable_time_code = 1'b1;`
494
495			`enable_null = 1'b0;`
496			`end`
497			`else if(fct_send > 3'd0)`
498			`begin`
499			`if(global_counter_transfer == 4'd7 \|\| global_counter_transfer == 4'd9 \|\| global_counter_transfer == 4'd13 \|\| global_counter_transfer == 4'd3)`
500			`enable_fct = 1'b1;`
501
502			`enable_null = 1'b0;`
503			`end`
504			`else if(txwrite_tx && fct_counter > 6'd0)`
505			`begin`
506			`if(global_counter_transfer == 4'd7 \|\| global_counter_transfer == 4'd9 \|\| global_counter_transfer == 4'd13 \|\| global_counter_transfer == 4'd3)`
507			`enable_n_char = 1'b1;`
508
509			`enable_null = 1'b0;`
510			`end`
511
512			`end`
513			`endcase`
514
515			`end`
516
517			`always@(posedge pclk_tx)`
518			`begin`
519			`if(!enable_tx)`
520			`begin`
521			`null_s <= 8'h74;`
522			`fct_s <= 4'h4;`
523			`eop_s <= 4'h5;`
524			`eep_s <= 4'h6;`
525			`timecode_s <= 14'h1e00;`
526
527			`fct_flag <= 3'd0;`
528			`first_time <= 1'b1;`
529			`last_type <= NULL;`
530
531			`global_counter_transfer <= 4'd0;`
532			`txdata_flagctrl_tx_last <= 9'd0;`
533			`last_timein_control_flag_tx <= 8'd0;`
534			`last_tx_dout <= 1'b0;`
535			`last_tx_sout <= 1'b0;`
536			`state_tx <= tx_spw_start;`
537			`end`
538			`else`
539			`begin`
540
541			`state_tx <= next_state_tx;`
542			`last_tx_dout <= tx_dout;`
543			`last_tx_sout <= tx_sout;`
544
545			`if(enable_null)`
546			`begin`
547			`fct_flag<= fct_flag;`
548			`if(first_time)`
549			`begin`
550			`first_time <= 1'b0;`
551
552			`global_counter_transfer <= global_counter_transfer + 4'd1;`
553			`end`
554			`else if(global_counter_transfer != 4'd7)`
555			`begin`
556			`global_counter_transfer <= global_counter_transfer + 4'd1;`
557			`end`
558			`else`
559			`begin`
560			`global_counter_transfer <= 4'd0;`
561			`end`
562			`end`
563			`else if(enable_fct)`
564			`begin`
565			`if(global_counter_transfer != 4'd3)`
566			`begin`
567			`global_counter_transfer <= global_counter_transfer + 4'd1;`
568			`end`
569			`else`
570			`begin`
571			`global_counter_transfer <= 4'd0;`
572			`fct_flag <= fct_flag + 3'd1;`
573			`end`
574			`end`
575			`else if(enable_time_code)`
576			`begin`
577			`fct_flag<= fct_flag;`
578			`if(global_counter_transfer < 4'd13)`
579			`begin`
580			`global_counter_transfer <= global_counter_transfer + 4'd1;`
581			`last_timein_control_flag_tx <= timecode_tx_i;`
582			`end`
583			`else`
584			`begin`
585			`global_counter_transfer <= 4'd0;`
586			`end`
587			`end`
588			`else if(enable_n_char)`
589			`begin`
590			`fct_flag<= fct_flag;`
591			`if(global_counter_transfer < 4'd9 && !data_tx_i[8])`
592			`begin`
593			`global_counter_transfer <= global_counter_transfer + 4'd1;`
594			`txdata_flagctrl_tx_last <= data_tx_i;`
595			`end`
596			`else if(global_counter_transfer < 4'd3 && data_tx_i[8])`
597			`begin`
598			`global_counter_transfer <= global_counter_transfer + 4'd1;`
599			`txdata_flagctrl_tx_last <= data_tx_i;`
600			`end`
601			`else`
602			`begin`
603			`global_counter_transfer <= 4'd0;`
604			`end`
605			`end`
606
607			`end`
608			`end`
609
610			`endmodule`