This memory controller supports DDR4, DDR3, DDR3L, LPDDR4 SDRAM ... it is better for low cost to store memory to external DRAM. So DDR (Double Data Rate) controller is needed. All engines in ASIC IC ...
The DDR3/2 PHY is compatible with JEDEC DDR3 and JEDEC DDR2 SDRAMs, supports a range of DDR3 DRAM speeds from 666Mbps to1866Mbps and DDR2 DRAM speeds from 666Mbps to 1066Mbps, and target support x16 ...