第6章 数字集成电路基本单元与版图4----ic layout design----tools from cadence.pptVIP

Electronic Design AutomationTools from Cadence Agenda Overview of Cadence Setup the environment Main Stream EDA tools in Analog Design Flow Main Stream EDA tools in Digital Design Flow Profile of Cadence Cadence Design Systems, Inc. was established in 1988 through the merger of two EDA pioneers—ECAD, Inc. and SDA Systems. Cadence is the worlds largest provider of electronic design automation (EDA) products and services. Cadence is a global company with 5,700 employees in over 30 major locations, and revenues of nearly $1.3 billion in 2000 Overview of Cadence Cover almost every aspects of electronic design, including ASIC, FPGA,PCB. 综合工具（synthesis tools）不及Synopsys 在schematic design and simulation, layout design 方面有明显优势。 支持SKILL语言 Overview of Cadence Cadence provides complete solutions to both analog and digital IC design flow Virtuoso custom design platform specification-driven environment(规则驱动环境) multi-mode simulation(多模式仿真) accelerated layout(快速布图) Silicon analysis (硅验证) Encounter digital IC design platform minimizes time to wires and full-chip iteration time a unified database with massive capacity of up to 50 million gates Overview of Cadence Virtuoso Design Platform Schematic editing tool Composer Circuit simulation tool Spectre Layout Editing tool Layout editor Layout verification tool Diva Dracula Assura Encounter Digital Design Platform Synthesis tool Encounter RTL compiler Produces a global logic structure made for timing closure Physical synthesis tool First encounter GPS(Global Physical Synthesis) supports both RTL-to-placed gates and netlist-to-placed gates design styles produce a silicon virtual prototype of the physical design(硅虚拟原型) Place and route tool Nano encounter Overview of Cadence We would focus on: Circuit Design tool: Composer Layout design tool: Virtuoso Layout Editor Layout verification tools: Dracula and Diva Setup the environment Supporting Files: .cshrc .cdsenv .cdsinit cds.lib Technology file (.tf) Display file(.drf) Setup the enviro