“Future mobile applications demand far higher performance and battery life than what is available today,” said Martin Scott, senior vice president of Research and Technology Development at Rambus. “Mobile XDR provides a solution for designers looking to offer leading-edge mobile content that consumes lower power in a cost-effective architecture. It is designed to fit within existing SoC and DRAM process roadmaps and currently available manufacturing infrastructure.”

The Mobile XDR memory architecture will enable future mobile memory platforms, which can achieve throughputs of up to 4.3Gbps with unequaled power efficiency. With this breakthrough performance, SoC platforms can achieve over 17GB/s of memory bandwidth from a single mobile DRAM device while extending battery life by more than 30 minutes.

Mobile XDR delivers significant cost savings through its new chip packaging design, offering pincount reduction and decreased die size via a smaller interface. Power reduction is achieved through an aggressive drop in active power coupled with fast transitions to power-saving modes. The architecture’s unparalleled scalable power and performance will be critical in supporting a range of applications from “talk” mode to demanding multimedia capabilities such as stereoscopic 3D HD video.

Mobile XDR offers:

• Very Low-Swing Differential Signaling: A bi-directional, ground-referenced, differential signaling technology, which offers a high-performance, low-power, and cost-effective solution for applications requiring extraordinary bandwidth and superior power efficiency.
• FlexClocking Architecture: Utilises asymmetric partitioning and places critical calibration and timing circuitry in the controller interface, greatly simplifying the design of the DRAM interface.
• Advanced Power State Management: Reduces memory system power and provides ultra-fast transition times between various low-power and active operating modes.

In addition, Rambus’ FlexPhase and Microthreading technologies have greatly helped to improve the power efficiencies of mobile platforms.

Key components of the Mobile XDR memory architecture include Mobile XDR DRAM, Mobile XDR memory controller PHY (MIO), and the Mobile XDR memory controller (MXC). The Mobile XDR memory architecture is currently available for licensing.

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