Comment by rowanG077
How does that work? I imagine you now have the feed to clock from ram back to the CPU? Or does it synchronize two local clocks somehow?
How does that work? I imagine you now have the feed to clock from ram back to the CPU? Or does it synchronize two local clocks somehow?
This anandtech article seems to be a decent summary of what it's doing, the JEDEC JESD82-531A.01 spec is also freely available (with registration) if you're feeling adventurous
https://www.anandtech.com/show/21455/making-desktop-ddr5-eve...
The clock redriver uses a phase locked loop to generate a few identical clock signals for use by the DRAM chips on the module. This same tech is also used for clock multipliers and dividers throughout digital systems.
Rambus has details on their "DDR5 client clock driver" here: https://www.rambus.com/memory-interface-chips/ddr5-client-di...