Synopsys DesignWare® DDR3/2 PHY Cores are mixed-signal PHY IP Cores that supply the complete physical interface to JEDEC standard DDR3, DDR3L (1.3V DDR3) and DDR2 SDRAM Memories. 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.
A key component of the DesignWare DDR3/2 PHY is the extensive in system data training/calibration capability in order to maximize the overall timing budget and improve system reliability. The DesignWare DDR3/2 PHY contains calibration circuits for read data eye training (optimizes and maintains the optimal DQS offset into the center of the read data eye), write data eye training (optimizes and maintains the optimal DQS offset into the center of the write data eye), per-bit deskew training (minimizes bit to bit timing skew for reads and writes independently), DDR3 write leveling, and DDR3 read leveling.
The DDR3/2 PHY offers a DFI 2.1 interface to the memory controller.
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
No portion of this site may be copied, retransmitted, reposted, duplicated or otherwise used without the express written permission of Design And Reuse.
Give us your feedback
Was this page helpful? Ask us a question or get help
Talk to us
Add your Products