# The DRAM interface and the PHY \(why a DDR3\+ interface must be tuned at boot\)

- HackerByte page: <https://hackerbyte.net/en/stories/a-detailed-technical-explanation-of-dram-interfaces-and-the-phy-layer-50447900>
- Original source: <https://github.com/enjoy-digital/litedram/blob/master/doc/manual/03_dram_interface.md>
- Hacker News discussion: <https://news.ycombinator.com/item?id=50447900>
- Submitted to Hacker News: 2026-11-10T23:41:41.000Z

A detailed technical explanation of DRAM interfaces and the PHY layer.

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