URL
https://opencores.org/ocsvn/sqmusic/sqmusic/trunk
[/] [sqmusic/] [trunk/] [sqm/] [sqm_pwm.v] - Diff between revs 4 and 6
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| Rev 4 |
Rev 6 |
| Line 41... |
Line 41... |
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SQM_PWM_LOG dec( .din(din), .rep0(rep0), .rep1(rep1), .zero(zero) );
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SQM_PWM_LOG dec( .din(din), .rep0(rep0), .rep1(rep1), .zero(zero) );
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always @(posedge clk or negedge reset_n) begin
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always @(posedge clk or negedge reset_n) begin
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if( !reset_n ) begin
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if( !reset_n ) begin
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count=0;
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count<=0;
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last0=0;
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last0<=0;
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last1=1;
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last1<=1;
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end
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end
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else
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else
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if( zero ) begin
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if( zero ) begin
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pwm=0;
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pwm <=0;
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count=0;
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count<=0;
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end
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end
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else if( last0!=rep0 || last1!=rep1 ) begin
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else if( last0!=rep0 || last1!=rep1 ) begin
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last0 <= rep0;
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last0 <= rep0;
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last1 <= rep1;
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last1 <= rep1;
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count = 0;
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count <= 0;
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pwm=0;
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pwm <=0;
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end
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end
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else if( last0==1 && last1==1 ) begin
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else if( last0==1 && last1==1 ) begin
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pwm=clk;
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pwm <=clk;
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count=0;
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count<=0;
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end
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end
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else begin
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else begin
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if( pwm && count==last1-1 ) begin
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if( pwm && count==last1-1 ) begin
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count=0;
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count<=0;
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pwm=0;
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pwm <=0;
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end
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end
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else if( !pwm && count==last0-1 ) begin
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else if( !pwm && count==last0-1 ) begin
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count=0;
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count<=0;
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pwm=1;
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pwm <=1;
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end
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end
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else begin
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else begin
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count<=count+1;
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count<=count+1;
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pwm<=pwm;
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pwm<=pwm;
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end
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end
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