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fgpa: rfnoc: Set Replay memory transactions to 2 KiB

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This sets the Replay block's counter width so that memory bursts are
up to 2 KiB. Previously, the counter width was fixed, which meant
that wide memories would require especially large buffers and could
exceed the 4 KiB limit imposed by AXI.


Original-commit: 08d03f881e2767f45ab7fc18c8003c9739b0ffb2
This commit is contained in:
Wade Fife
2022-03-09 07:57:21 -06:00
parent 0ae661c853
commit df7fd28589
2 changed files with 15 additions and 7 deletions
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lib/rfnoc/blocks/rfnoc_block_replay/axis_replay.v
+3 -3
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@@ -177,9 +177,9 @@ module axis_replay #(
// Log base 2 of the depth of the input and output FIFOs to use. The FIFOs
// should be large enough to store more than a complete burst
// (MEM_BURST_LEN). A size of 9 (512 64-bit words) is one 36-kbit BRAM.
localparam REC_FIFO_ADDR_WIDTH = 9; // Log2 of input/record FIFO size
localparam PLAY_FIFO_ADDR_WIDTH = 9; // Log2 of output/playback FIFO size
localparam HDR_FIFO_ADDR_WIDTH = 5; // Log2 of output/time FIFO size
localparam REC_FIFO_ADDR_WIDTH = MEM_COUNT_W+1; // Log2 of input/record FIFO size
localparam PLAY_FIFO_ADDR_WIDTH = MEM_COUNT_W+1; // Log2 of output/playback FIFO size
localparam HDR_FIFO_ADDR_WIDTH = 5; // Log2 of output/time FIFO size
//
// Amount of data to buffer before writing to RAM. It must not exceed
// 2**MEM_COUNT_W (the maximum count allowed by an AXI master).