The DDR3/2 SDRAM PHY IP is Compatible with JEDEC standard DDR3, DDR3L and DDR2 SDRAMs and provides a DFI 2.1 interface to the memory controller The DDR3/2 PHY IP supports the entire range of DDR3 SDRAM speeds, from DDR3-800 through DDR3-2133, with backward compatibility provided for DDR2-667 through DDR2-1066 devices. The PHYs are compiled into a hard macro that is optimized for specific foundry nodes. Each DDR3/2 PHY is constructed from the following libraries of components: the application specific SSTL I/O library, a single Address/Command macro block and multiple byte wide data macro blocks instantiated as many times as required to accommodate the memory channel width.
Features
Low latency
Per-bit deskew and embedded PLLs for high-speed operation and improved timing budget
DFI 2.1 compliant interface to memory controller (1:1 or 1:2 options)
Configurable external data bus widths between 8 and 64 bits in 8-bit increments plus ECC
Permits operating with DDR3/2 SDRAMs using data widths narrower than the compiled data width
Support for 1 to 4 memory ranks
Benefits
Compatible with JEDEC standard DDR3, DDR3L and DDR2 SDRAMs and provides a DFI 2.1 interface to the memory controller
Scalable architecture that supports the speed range from DDR2-667 up to DDR3-1600
PHY Utility Bock (PUB) included as a soft IP utility that includes control features, such as write leveling and data eye training, and provides support for production testing of the DDR3/2 PHY
Delivery of product as a hardened Mixed-Signal macrocell components allows precise control of timing critical delay and skew paths
Deliverables
Verilog behavioral model
Synopsys lib timing model
LEF layout abstract views & GDSII layout cells
Spice netlists for layout versus schematic (LVS) checks
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