diff options
Diffstat (limited to 'usrp2/timing/time_64bit.v')
| -rw-r--r-- | usrp2/timing/time_64bit.v | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/usrp2/timing/time_64bit.v b/usrp2/timing/time_64bit.v index 84f79645c..8ccde3f54 100644 --- a/usrp2/timing/time_64bit.v +++ b/usrp2/timing/time_64bit.v @@ -11,7 +11,8 @@ module time_64bit localparam NEXT_SECS = 0; localparam NEXT_TICKS = 1; - localparam PPS_POL = 2; + localparam PPS_POLSRC = 2; + localparam PPS_IMM = 3; localparam ROLLOVER = TICKS_PER_SEC - 1; @@ -25,6 +26,8 @@ module time_64bit wire set_on_pps_trig; reg set_on_next_pps; wire pps_polarity; + wire set_imm; + wire pps_source; setting_reg #(.my_addr(BASE+NEXT_TICKS)) sr_next_ticks (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr), @@ -34,9 +37,13 @@ module time_64bit (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr), .in(set_data),.out(next_seconds_preset),.changed(set_on_pps_trig)); - setting_reg #(.my_addr(BASE+PPS_POL)) sr_pps_pol + setting_reg #(.my_addr(BASE+PPS_POLSRC)) sr_pps_polsrc (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr), - .in(set_data),.out(pps_polarity),.changed()); + .in(set_data),.out({pps_source,pps_polarity}),.changed()); + + setting_reg #(.my_addr(BASE+PPS_IMM)) sr_pps_imm + (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr), + .in(set_data),.out(set_imm),.changed()); reg [1:0] pps_del; reg pps_reg_p, pps_reg_n, pps_reg; @@ -59,7 +66,7 @@ module time_64bit set_on_next_pps <= 0; else if(set_on_pps_trig) set_on_next_pps <= 1; - else if(pps_edge) + else if(set_imm | pps_edge) set_on_next_pps <= 0; always @(posedge clk) @@ -68,7 +75,7 @@ module time_64bit seconds <= 32'd0; ticks <= 32'd0; end - else if(pps_edge & set_on_next_pps) + else if((set_imm | pps_edge) & set_on_next_pps) begin seconds <= next_seconds_preset; ticks <= next_ticks_preset; |