The DDR3, DDR3L, DDR4, and LPDDR4 Combo PHY is designed for easy integration into any System-On-Chip (SOC) and can be seamlessly connected to a third-party DFI-compliant DDR3, DDR3L, DDR4, or LPDDR4 ...
Over the past 25 years we have seen the transition from SDRAM (Synchronous Dynamic RAM) to DDR (Double Data Rate) SDRAM, and then to DDR2, DDR3 and DDR4 on a cadence of five year cycles.