diff options
Diffstat (limited to 'usrp2/timing/time_sender.v')
-rw-r--r-- | usrp2/timing/time_sender.v | 68 |
1 files changed, 49 insertions, 19 deletions
diff --git a/usrp2/timing/time_sender.v b/usrp2/timing/time_sender.v index aa2fcbbdb..f4ee5226a 100644 --- a/usrp2/timing/time_sender.v +++ b/usrp2/timing/time_sender.v @@ -2,23 +2,23 @@ module time_sender (input clk, input rst, - input [31:0] master_time, + input [63:0] vita_time, input send_sync, - output exp_pps_out); + output reg exp_time_out); reg [7:0] datain; reg k; wire [9:0] dataout; - reg [9:0] dataout_reg; - reg disp_reg; - wire disp, new_word; + reg [9:0] dataout_reg; + reg disp_reg; + wire disp, new_word; + reg [4:0] state; + reg [3:0] bit_count; encode_8b10b encode_8b10b (.datain({k,datain}),.dispin(disp_reg), .dataout(dataout),.dispout(disp)); - assign exp_pps_out = dataout_reg[0]; - always @(posedge clk) if(rst) disp_reg <= 0; @@ -33,9 +33,9 @@ module time_sender else dataout_reg <= {1'b0,dataout_reg[9:1]}; - reg [4:0] state; - reg [3:0] bit_count; - + always @(posedge clk) + exp_time_out <= dataout_reg[0]; + assign new_word = (bit_count == 9); always @(posedge clk) @@ -52,17 +52,23 @@ module time_sender localparam SEND_T1 = 3; localparam SEND_T2 = 4; localparam SEND_T3 = 5; + localparam SEND_T4 = 6; + localparam SEND_T5 = 7; + localparam SEND_T6 = 8; + localparam SEND_T7 = 9; + localparam SEND_TAIL = 10; localparam COMMA = 8'hBC; localparam HEAD = 8'h3C; - - reg [31:0] master_time_reg; + localparam TAIL = 8'hF7; + + reg [63:0] vita_time_reg; always @(posedge clk) if(rst) - master_time_reg <= 0; + vita_time_reg <= 0; else if(send_sync) - master_time_reg <= master_time; + vita_time_reg <= vita_time; always @(posedge clk) if(rst) @@ -84,27 +90,51 @@ module time_sender end SEND_T0 : begin - {k,datain} <= {1'b0, master_time_reg[31:24] }; + {k,datain} <= {1'b0, vita_time_reg[63:56] }; state <= SEND_T1; end SEND_T1 : begin - {k,datain} <= {1'b0, master_time_reg[23:16]}; + {k,datain} <= {1'b0, vita_time_reg[55:48]}; state <= SEND_T2; end SEND_T2 : begin - {k,datain} <= {1'b0, master_time_reg[15:8]}; + {k,datain} <= {1'b0, vita_time_reg[47:40]}; state <= SEND_T3; end SEND_T3 : begin - {k,datain} <= {1'b0, master_time_reg[7:0]}; + {k,datain} <= {1'b0, vita_time_reg[39:32]}; + state <= SEND_T4; + end + SEND_T4 : + begin + {k,datain} <= {1'b0, vita_time_reg[31:24]}; + state <= SEND_T5; + end + SEND_T5 : + begin + {k,datain} <= {1'b0, vita_time_reg[23:16]}; + state <= SEND_T6; + end + SEND_T6 : + begin + {k,datain} <= {1'b0, vita_time_reg[15:8]}; + state <= SEND_T7; + end + SEND_T7 : + begin + {k,datain} <= {1'b0, vita_time_reg[7:0]}; + state <= SEND_TAIL; + end + SEND_TAIL : + begin + {k,datain} <= {1'b1, TAIL}; state <= SEND_IDLE; end default : state <= SEND_IDLE; endcase // case(state) - endmodule // time_sender |