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hip: Report error if fractional MMCM configuration does not work

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
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Alex Forencich
2025-03-17 21:00:12 -07:00
parent eacae099bf
commit b468d92e39
1 changed files with 5 additions and 0 deletions
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5
rtl/hip/us/taxi_mmcm_frac.sv
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@@ -39,6 +39,11 @@ localparam DIR = OFFSET_NUM >= 0;
localparam NUM_1 = (DIR ? OFFSET_NUM : -OFFSET_NUM)*56*MMCM_OUTPUT_DIV; localparam NUM_1 = (DIR ? OFFSET_NUM : -OFFSET_NUM)*56*MMCM_OUTPUT_DIV;
localparam DENOM_1 = OFFSET_DENOM; localparam DENOM_1 = OFFSET_DENOM;
localparam MMCM_MIN_PSCLK_CYCLES = 12;
if (DENOM_1 / NUM_1 < MMCM_MIN_PSCLK_CYCLES)
$fatal(0, "Error: requested offset is too large for MMCM dynamic phase shifter");
localparam CNT_W = $clog2(DENOM_1)+1; localparam CNT_W = $clog2(DENOM_1)+1;
logic [CNT_W-1:0] cnt_reg = '0; logic [CNT_W-1:0] cnt_reg = '0;