Forum Discussion
Thulasi
New Contributor
New ContributorSyncE clock as the reference for DDR, HBM, and FPGA control interfaces in the Agilex M-Series design
Hi, In Agilex 7 M-Series Evaluation Kit clock tree, the 390.625 MHz SyncE (Synchronous Ethernet) recovered/reference clock is distributed through the Si5395/Si5391 clock generators and is used to ge...
JonWay_altera
Frequent Contributor
Frequent ContributorThe 390.625 MHz SyncE-recovered clock is used on the evaluation kit primarily because it is a high-quality, system-level frequency reference that is already available from the Ethernet/CPRI clocking subsystem—not because DDR5 or HBM inherently require a SyncE source.
