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Comment by nine_k

Comment by nine_k 6 months ago

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CPUs may be very digital inside, but DRAM and flash memory are highly analog, especially MLC flash. DDR4 even has a dedicated training mode [1], during which DRAM and the memory controller learn the quirks of particular data lines and adjust to them, in order to communicate reliably.

[1]: https://www.systemverilog.io/design/ddr4-initialization-and-...