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IP-verified DDR3 runs at 1600Mbit/s

Posted: 09 Jun 2009 ?? ?Print Version ?Bookmark and Share

Keywords:DDR3? DIMM? digital controller?

Synopsys Inc. has announced that its DesignWare DDR3/2 PHY and digital controller IP is the first DDR3 IP that has been fully verified in test silicon at 1600Mbit/s, the maximum data-rate of the JEDEC DDR3 specification.

Utilizing test chips manufactured in 65nm technology, Synopsys verified the operation of its DDR3/2 PHY and digital controller IP with DDR3 memory components and DIMMs. This latest achievement gives designers confidence that the DesignWare DDR3/2 IP operates reliably at 1600Mbit/s in a complete memory sub-system environment, taking into consideration the chip package, PCB and associated DRAMs.

The DesignWare DDR3/2 IP is targeted at a broad range of high-performance applications such as digital home, digital office, data center and storage requiring bandwidth in excess of 1066Mbit/s per pin, and provides backwards compatibility for DDR2-667 through DDR2-1066 devices. To support the full range of DDR3 data rates, the DesignWare DDR3/2 IP includes built-in data training circuits to enable in-system calibration, offering more robust operation for the overall system. As part of the data training sequence, the DDR3/2 IP includes the ability to remove bit-to-bit timing skew, which can occur on the chip, in the package or on the circuit board, to significantly improve memory system timing budgets.

The DesignWare DDR3/2 PHY was verified with Synopsys' fourth generation DDR silicon characterization environment, designed to mimic typical real-world product environments. For example, the test chip packaging and circuit board design used a minimum number of interconnect layers, which is a common requirement in consumer-oriented end applications. Additionally, the characterization PCB includes intentional timing skew on select data paths to verify the per-bit de-skew capability of the DDR3/2 PHY. The DesignWare DDR3/2 PHY characterization reports are available, providing a detailed analysis of all aspects of the DDR PHY to SDRAM interface including clock timing specifications, write and read data eyes and a comparison of circuit simulation versus silicon measurement. ESD and latch up testing were also performed on the I/O pins of the test chips. These tests help ensure that the IP has been fully verified and silicon proven, allowing designers to reduce risk and speed time-to-market of their SoC designs.

For the high-speed characterization of the DDR3/2 IP, Synopsys utilized 16bit-wide DDR3-1600 SDRAMs supplied by Elpida Memory Inc. The 16bit-wide SDRAM represents the most commonly used SDRAM solution for embedded applications offering the highest memory bandwidth per SDRAM component.

"We are pleased to help facilitate the successful verification of 1600Mbit/s memory performance in Synopsys' DesignWare DDR3/2 characterization environment," said Susumu Hatano, executive manager for the system technology group at Elpida. "DDR3 SDRAMs are just beginning to make headway into the embedded DRAM market, offering up to 50 percent higher bandwidth and over 15 to 30 percent lower power versus DDR2. Synopsys' silicon-proven DesignWare DDR3/2 IP will enable designers to take advantage of these benefits in their high-performance SoC designs."

"With DDR interfaces undergoing a doubling of speed approximately every three years, SoC designers are looking for proven IP solutions from a trusted supplier to help them meet their aggressive time-to-market goals," said John Koeter, VP of marketing for the solutions group at Synopsys. "By offering a broad portfolio of high-quality, silicon-proven DDR IP supporting the full spectrum of speeds up to 1600Mbit/s, Synopsys helps lower the risk of incorporating the latest memory interface into their designs."

The DesignWare DDR3/2 IP is a part of Synopsys' complete DesignWare DDR IP offering that consists of digital controllers, PHY, and verification IP supporting DDR2, DDR3 and mobile DDR. The comprehensive portfolio of DDR IP supports leading 130nm, 90nm, 65nm, 55nm and 45/40nm technologies. Synopsys helps lower integration risk by providing DDR IP solutions that have been implemented in hundreds of applications and are shipping in high-volume production.

DesignWare DDR3/2 PHY and the digital controller IP are available now in advanced process technologies for leading foundries. Test chip characterization reports for the DDR3/2 PHY are also available.

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