| Line 75... |
Line 75... |
reg [11:0] after64us;
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reg [11:0] after64us;
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reg [11:0] after850ns;
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reg [11:0] after850ns;
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reg got_bit_internal;
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reg got_bit_internal;
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reg get_rx_got_fct_a, get_rx_got_fct_b;
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reg get_rx_error_a, get_rx_error_b;
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reg get_rx_got_null_a, get_rx_got_null_b;
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reg get_rx_got_nchar_a, get_rx_got_nchar_b;
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reg get_rx_got_time_code_a, get_rx_got_time_code_b;
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reg get_rx_credit_error_a, get_rx_credit_error_b;
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//
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//
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assign fsm_state = state_fsm;
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assign fsm_state = state_fsm;
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always@(*)
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always@(*)
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begin
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begin
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| Line 104... |
Line 112... |
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if(after128us == 12'd1279)
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if(after128us == 12'd1279)
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begin
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begin
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next_state_fsm = ready;
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next_state_fsm = ready;
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end
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end
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else if(rx_error | rx_got_fct | rx_got_nchar | rx_got_time_code)
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else if(get_rx_error_a | get_rx_got_fct_a | get_rx_got_nchar_a | rx_got_time_code)
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begin
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begin
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next_state_fsm = error_reset;
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next_state_fsm = error_reset;
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end
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end
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end
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end
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ready:
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ready:
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begin
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begin
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if(rx_error | rx_got_fct | rx_got_nchar | rx_got_time_code)
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if(get_rx_error_a | get_rx_got_fct_a | get_rx_got_nchar_a | get_rx_got_time_code_a)
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begin
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begin
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next_state_fsm = error_reset;
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next_state_fsm = error_reset;
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end
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end
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else if(((!link_disable) & (link_start |(auto_start & rx_got_null)))==1'b1)
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else if(((!link_disable) & (link_start |(auto_start & get_rx_got_null_a)))==1'b1)
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begin
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begin
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next_state_fsm = started;
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next_state_fsm = started;
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end
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end
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end
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end
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started:
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started:
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begin
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begin
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if(rx_error | rx_got_fct | rx_got_nchar | rx_got_time_code | after128us == 12'd1279)
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if(get_rx_error_a | get_rx_got_fct_a | get_rx_got_nchar_a | get_rx_got_time_code_a | after128us == 12'd1279)
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begin
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begin
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next_state_fsm = error_reset;
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next_state_fsm = error_reset;
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end
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end
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else if((rx_got_null & rx_got_bit)== 1'b1)
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else if((get_rx_got_null_a & rx_got_bit)== 1'b1)
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begin
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begin
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next_state_fsm = connecting;
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next_state_fsm = connecting;
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end
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end
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end
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end
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connecting:
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connecting:
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begin
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begin
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if(rx_error | rx_got_nchar | rx_got_time_code | after128us == 12'd1279)
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if(get_rx_error_a | get_rx_got_nchar_a | get_rx_got_time_code_a | after128us == 12'd1279)
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begin
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begin
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next_state_fsm = error_reset;
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next_state_fsm = error_reset;
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end
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end
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else if(rx_got_fct)
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else if(get_rx_got_fct_a)
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begin
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begin
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next_state_fsm = run;
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next_state_fsm = run;
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end
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end
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end
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end
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run:
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run:
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begin
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begin
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if(rx_error | rx_credit_error | link_disable | after850ns == 12'd85)
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if(get_rx_error_a | get_rx_credit_error_a | link_disable | after850ns == 12'd85)
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begin
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begin
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next_state_fsm = error_reset;
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next_state_fsm = error_reset;
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end
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end
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else
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else
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begin
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begin
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| Line 176... |
Line 184... |
rx_resetn <= 1'b0;
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rx_resetn <= 1'b0;
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enable_tx<= 1'b0;
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enable_tx<= 1'b0;
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send_null_tx<= 1'b0;
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send_null_tx<= 1'b0;
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send_fct_tx<= 1'b0;
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send_fct_tx<= 1'b0;
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get_rx_got_fct_a <= 1'b0;
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get_rx_got_fct_b <= 1'b0;
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get_rx_error_a <= 1'b0;
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get_rx_error_b <= 1'b0;
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get_rx_got_null_a <= 1'b0;
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get_rx_got_null_b <= 1'b0;
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get_rx_got_nchar_a <= 1'b0;
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get_rx_got_nchar_b <= 1'b0;
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get_rx_got_time_code_a <= 1'b0;
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get_rx_got_time_code_b <= 1'b0;
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get_rx_credit_error_a <= 1'b0;
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get_rx_credit_error_b <= 1'b0;
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end
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end
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else
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else
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begin
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begin
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get_rx_got_fct_b <= rx_got_fct;
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get_rx_got_fct_a <= get_rx_got_fct_b;
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get_rx_error_b <= rx_error;
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get_rx_error_a <= get_rx_error_b;
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get_rx_got_null_b <= rx_got_null;
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get_rx_got_null_a <= get_rx_got_null_b;
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get_rx_got_nchar_b <= rx_got_nchar;
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get_rx_got_nchar_a <= get_rx_got_nchar_b;
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get_rx_got_time_code_b <= rx_got_time_code;
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get_rx_got_time_code_a <= get_rx_got_time_code_b;
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get_rx_credit_error_b <= rx_credit_error;
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get_rx_credit_error_a <= get_rx_credit_error_b;
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state_fsm <= next_state_fsm;
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state_fsm <= next_state_fsm;
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case(state_fsm)
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case(state_fsm)
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error_reset:
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error_reset:
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begin
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begin
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