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cpld: optimize gs dacs

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UzixLS
2021-07-05 22:04:24 +03:00
parent ec75088047
commit 3acc38a273
2 changed files with 18 additions and 18 deletions
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34
cpld/rtl/top.v
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@ -215,32 +215,32 @@ always @(posedge clk32) begin
end
/* GS DAC */
reg [6:0] dac0v_cnt, dac1v_cnt, dac2v_cnt, dac3v_cnt;
reg vol0_en, vol1_en, vol2_en, vol3_en;
reg [5:0] vol_cnt;
reg [8:0] dac0_cnt, dac1_cnt, dac2_cnt, dac3_cnt;
assign gdac0 = dac0v_cnt[6]? dac0_cnt[8] : 1'b0;
assign gdac1 = dac1v_cnt[6]? dac1_cnt[8] : 1'b0;
assign gdac2 = dac2v_cnt[6]? dac2_cnt[8] : 1'b0;
assign gdac3 = dac3v_cnt[6]? dac3_cnt[8] : 1'b0;
assign gdac0 = dac0_cnt[8];
assign gdac1 = dac1_cnt[8];
assign gdac2 = dac2_cnt[8];
assign gdac3 = dac3_cnt[8];
always @(posedge clk32 or negedge rst_n) begin
if (!rst_n) begin
dac0v_cnt <= 0;
dac1v_cnt <= 0;
dac2v_cnt <= 0;
dac3v_cnt <= 0;
{vol0_en, vol1_en, vol2_en, vol3_en} <= 0;
vol_cnt <= 0;
dac0_cnt <= 0;
dac1_cnt <= 0;
dac2_cnt <= 0;
dac3_cnt <= 0;
end
else begin
dac0v_cnt <= dac0v_cnt[5:0] + gs_vol0;
dac1v_cnt <= dac1v_cnt[5:0] + gs_vol1;
dac2v_cnt <= dac2v_cnt[5:0] + gs_vol2;
dac3v_cnt <= dac3v_cnt[5:0] + gs_vol3;
if (dac0v_cnt[6]) dac0_cnt <= dac0_cnt[7:0] + gs_dac0;
if (dac1v_cnt[6]) dac1_cnt <= dac1_cnt[7:0] + gs_dac1;
if (dac2v_cnt[6]) dac2_cnt <= dac2_cnt[7:0] + gs_dac2;
if (dac3v_cnt[6]) dac3_cnt <= dac3_cnt[7:0] + gs_dac3;
vol_cnt <= vol_cnt + 6'd31;
vol0_en <= vol_cnt < gs_vol0;
vol1_en <= vol_cnt < gs_vol1;
vol2_en <= vol_cnt < gs_vol2;
vol3_en <= vol_cnt < gs_vol3;
if (vol0_en) dac0_cnt <= dac0_cnt[7:0] + gs_dac0; else dac0_cnt[8] <= 0;
if (vol1_en) dac1_cnt <= dac1_cnt[7:0] + gs_dac1; else dac1_cnt[8] <= 0;
if (vol2_en) dac2_cnt <= dac2_cnt[7:0] + gs_dac2; else dac2_cnt[8] <= 0;
if (vol3_en) dac3_cnt <= dac3_cnt[7:0] + gs_dac3; else dac3_cnt[8] <= 0;
end
end