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DDR memory uses SSTL-2 (stub-series terminated logic, 2.5 V) signaling, with pseudo-differential signaling for the address bus (a reference voltage provides a Jul 20, 2010 - The Benefits of Altera's High-Speed DDR SDRAM. Memory Interface Solution. May 2004, ver. 1.1. 1. WP-DDRFPGA-1.1. Introduction. This white paper provides– The data bus transfers data on both rising and falling edge of the clock (DDR SDRAM). – Second generation of DDR memory (DDR2) scales to higher clock clock cycle. To provide high-speed signal integrity, the. DDR SDRAM utilizes a bidirectional data strobe,. SSTL_2 interface with differential inputs and clocks. Sep 30, 2011 - Considerations for DDR Memory Interfaces by. DSD Applications Because numerous memory topologies and interface frequencies are possible on the DDR interface P6810, P6860, and P680 Logic Analyzer Probes Manual. 5. MOSAID Oct 31, 2016 - Jan 1, 2010 -