Loongson Achieves First-Pass Silicon Success on High-Performance CPU with Synopsys CustomSim Circuit Simulation Solution
December 8, 2009 -- Synopsys, Inc. today announced that Loongson Technology Co., Ltd. (Loongson) (funded by the Institute of Computing Technologies of the Chinese Academy of Sciences) achieved first-pass silicon success on its 65-nm, multicore, high-performance Loongson-3 CPU design using Synopsys' CustomSim circuit simulator. The CustomSim solution was successfully deployed for timing and dynamic power simulation of advanced full-custom blocks, PLL, HyperTransport, register file, and content-addressable memory (CAM). The CustomSim solution's Spice-level precision and higher performance versus other FastSpice tools enabled Loongson to achieve first-pass silicon success with 3X faster verification turn-around time.
"The gigahertz clock speed and multi-core architecture of the Loongson-3 CPU required precise timing and power simulation to verify its aggressive design targets," said Dr. Hu WeiWu, Principal Scientist and Program Manager of the Loongson project. "Synopsys' CustomSim circuit simulation technology delivered the highest accuracy and performance compared with the other simulators we evaluated. Using CustomSim, we significantly shortened the verification time for the complex custom blocks and achieved first-pass working silicon with 3X overall reduction in the full custom design cycle."
The CustomSim solution unifies the simulation technologies of NanoSim, HSIM and XA with added multi-core processing capabilities. For full-chip verification, the CustomSim solution is tightly coupled to the VCS functional verification solution via a Direct Kernel Integration and is also combined with a unified analog/ mixed-signal (AMS) verification environment which simplifies usability through a common set of inputs, outputs and device models.
Reprinted from SOCcentral.com, your first stop for ASIC, FPGA, EDA, and IP news and design information.