CIMdata PLM Industry Summary Online Archive
15 April 2009
Product News
Synopsys Introduces Lower Power, High-Performance Architecture for AMBA 3 AXI On-Chip Interconnect
Synopsys, Inc. announced that it has enhanced its DesignWare® IP for the ARM® AMBA® 3 AXI™ interconnect with the industry's first hybrid architecture implementation, enabling dedicated high-performance and shared low-performance channels to be combined within a single AMBA 3 AXI on-chip interconnect. This new architecture, available in synthesizable source RTL, allows designers to configure the bus fabric to eliminate unnecessary logic within the design, thereby reducing area, power consumption, and overall routing congestion. The hybrid architecture is ideal for system-on-chip (SoC) designs that use a native AMBA 3 AXI interconnect. It also reduces the area impact for SoC designs transitioning from an AMBA 2.0 AHB™ to an AMBA 3 AXI-based architecture.
As demands on system performance continue to increase, the effective control of bandwidth allocation for SoC peripherals becomes increasingly important. The bandwidth requirements for each master-to-slave link within a system can vary widely. Traditional off-the-shelf bus architectures consist of either a single shared bus that services all master and slave devices, or dedicated buses that service specific master and slave devices. These bus architectures do not give designers the ability to configure the interconnect to accommodate individual component requirements. The new hybrid architecture implemented in the DesignWare IP for the AMBA 3 AXI interconnect provides designers with a choice of connecting the master-to-slave link through either a shared or dedicated bus within a single AMBA 3 AXI on-chip bus interconnect. This flexibility helps designers reduce the number of dedicated buses and wires in the system, alleviating routing congestion, minimizing area and lowering power consumption. Furthermore, the architecture eases timing closure by allowing for greater control of the critical paths throughout the bus interconnect.
In a recent case study using the Galaxy™ Implementation Platform, Synopsys configured the DesignWare IP for AMBA 3 AXI interconnect fabric consisting of 10 master and 10 slave ports. The hybrid architecture allows the low bandwidth master-slave links of the dedicated bus to be replaced with a shared bus, while keeping the high-bandwidth master-slave links as dedicated buses. With this implementation, Synopsys was able to reduce the number of wires by 52 percent, area by 30 percent, and power consumption by 30 percent when compared with Synopsys' traditional DesignWare IP for the AMBA 3 AXI interconnect fabric without the hybrid architecture.
The hybrid architecture has been verified using Synopsys DesignWare Verification IP for the AMBA 3 AXI interconnect, which has earned the ARM AMBA 3 Assured™ logo certification. Certification lowers integration risk and gives designers confidence that their AMBA 3 AXI interconnect-based designs using the DesignWare IP will accurately adhere to the AMBA 3 AXI protocol specifications as defined by ARM. The DesignWare IP for the AMBA 3 AXI interconnect provides internal piping options, allowing designers to balance the operating frequency and latency requirements without incurring a throughput penalty.
"The AMBA 3 AXI protocol is one of the most popular on-chip interconnects for high performance SoCs, and Synopsys' new hybrid architecture will help extend the use of this interconnect into next-generation applications with improved performance and area," said John Koeter, vice president of marketing for the Solutions Group at Synopsys. "As designers migrate to the high- performance AMBA 3 AXI on-chip interconnect, they can rely on Synopsys' established history in providing high-quality, silicon-proven AMBA IP to help them efficiently deliver advanced SoCs."
Availability
The hybrid architecture in the DesignWare IP for the AMBA 3 AXI interconnect is available now to early adopters. The IP is provided in synthesizable source RTL, as part of Synopsys' broad portfolio of comprehensive, silicon-proven IP solutions for the most widely used standards- based interfaces such as PCI Express, USB, DDR, SATA and Ethernet. General availability is scheduled for Q3 2009. For more information on DesignWare IP for the AMBA 3 AXI interconnect, please visit: http://www.synopsys.com/amba/.
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