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ptp: Adjust testbench thresholds

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2025-05-30 22:11:36 -07:00
parent 0eec8eb5be
commit 3ec52611eb
1 changed files with 2 additions and 2 deletions
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4
src/ptp/tb/taxi_ptp_clock_cdc/test_taxi_ptp_clock_cdc.py
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@@ -281,7 +281,7 @@ async def run_test(dut):
diffs = await tb.measure_ts_diff() diffs = await tb.measure_ts_diff()
tb.log.info(f"Difference: {mean(diffs)*1e9} ns (stdev: {stdev(diffs)*1e9})") tb.log.info(f"Difference: {mean(diffs)*1e9} ns (stdev: {stdev(diffs)*1e9})")
assert abs(mean(diffs)*1e9) < 5 assert abs(mean(diffs)*1e9) < 6.4
await RisingEdge(dut.input_clk) await RisingEdge(dut.input_clk)
tb.log.info("Coherent tracking (+/- 200 ppm)") tb.log.info("Coherent tracking (+/- 200 ppm)")
@@ -313,7 +313,7 @@ async def run_test(dut):
diffs = await tb.measure_ts_diff() diffs = await tb.measure_ts_diff()
tb.log.info(f"Difference: {mean(diffs)*1e9} ns (stdev: {stdev(diffs)*1e9})") tb.log.info(f"Difference: {mean(diffs)*1e9} ns (stdev: {stdev(diffs)*1e9})")
assert abs(mean(diffs)*1e9) < 5 assert abs(mean(diffs)*1e9) < 6.4
await RisingEdge(dut.input_clk) await RisingEdge(dut.input_clk)
tb.log.info("Slightly faster (6.3 ns)") tb.log.info("Slightly faster (6.3 ns)")