8000 axi_dac_interpolate: oversampling optimization · analogdevicesinc/hdl@4972e5c · GitHub
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AndreiGrozavAndreiGrozav
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axi_dac_interpolate: oversampling optimization
Optimize the oversampling mechanism. The behavior of the axi_dac_interpolate was changing if a debug module was added to the core. The current code has a better utilization and reliability.
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‎library/axi_dac_interpolate/axi_dac_interpolate_filter.v

Lines changed: 10 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -133,23 +133,19 @@ module axi_dac_interpolate_filter #(
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// paths randomly ready, only when using data buffers
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always @(posedge dac_clk) begin
136-
if (interpolation_ratio == 0) begin
137-
dac_int_ready <= dac_filt_int_valid;
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end else begin
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if (dac_filt_int_valid &
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(!start_sync_channels & dma_valid |
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(dma_valid & dma_valid_adjacent))) begin
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if (interpolation_counter < interpolation_ratio) begin
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interpolation_counter <= interpolation_counter + 1;
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dac_int_ready <= 1'b0;
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end else begin
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interpolation_counter <= 0;
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dac_int_ready <= 1'b1;
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end
136+
if (dac_filt_int_valid &
137+
(!start_sync_channels & dma_valid |
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(dma_valid & dma_valid_adjacent))) begin
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if (interpolation_counter == interpolation_ratio) begin
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interpolation_counter <= 0;
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dac_int_ready <= 1'b1;
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end else begin
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interpolation_counter <= interpolation_counter + 1;
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dac_int_ready <= 1'b0;
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interpolation_counter <= 0;
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end
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end else begin
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dac_int_ready <= 1'b0;
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interpolation_counter <= 0;
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end
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end
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