From 2bbaea3ad563bb2f693b4a14842170fb62d841b2 Mon Sep 17 00:00:00 2001 From: morgan Date: Fri, 26 Apr 2024 15:01:06 +0800 Subject: [PATCH] SMAFreqMulti: set mmcm bw to HIGH for lower jitter --- src/gateware/wrpll.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/gateware/wrpll.py b/src/gateware/wrpll.py index a6b2b488..aaf604bc 100644 --- a/src/gateware/wrpll.py +++ b/src/gateware/wrpll.py @@ -203,7 +203,7 @@ class SMAFrequencyMultiplier(Module, AutoCSR): # MMCME2 is capable to accept 10MHz input while PLLE2 only support down to 19MHz input (DS191) # The MMCME2 can be reconfiged during runtime using the Dynamic Reconfiguration Ports Instance("MMCME2_ADV", - p_BANDWIDTH="LOW", # lower jitter + p_BANDWIDTH="HIGH", # lower output jitter (see https://support.xilinx.com/s/question/0D52E00006iHqRqSAK) o_LOCKED=self.mmcm_locked.status, i_RST=self.mmcm_reset.storage,