1.2.1. DDR SDRAM, DDR2 SDRAM and RLDRAM II Memory
DDR and DDR2 SDRAM are JEDEC standards. RLDRAM II devices have minimal latency to support designs that require fast response times. These DDR memory interfaces use a variety of I/O standards, such as SSTL-II, 1.8-V HSTL, LVTTL, and LVCMOS.
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