ARM嵌入式CPU在ADSL片上系统中的设计应用

Design and Application of ARM Embedded CPU in ASDL System on Chip

ARM嵌入式CPU[1]是目前广泛应用的高性价比的RISC类型CPU核,文中主要描述了以ARM7TDMI为核心的ADSL片上系统的设计实现过程。现在,在SOC的设计中仍然有许多不确定问题需要解决,如设计流程、工程费用、IP核、软硬件协同验证等。本设计中,把ADSL系统芯片划分为软件和硬件2部分,这样软硬件协同验证就非常重要。在硬件验证平台中包含了FPGA,ARM测试片,其他IP核测试片等模块,ADSL应用程序可以在此硬件平台上运行,如果运行测试正确,那么功能设计就完成了。接下来进行时序验证和物理设计,最后,采用0.18μmCMOS工艺实现了芯片的设计,结果显示所有指标都符合的规划设计目标。

ARM RISC CPU Core is widely used in SOC design, this paper discusses the implementation of ADSL SOC based on ARM7TDMI. At present there are still many problems in SOC design, such as design flow,NRE fee,IP core,software and hardware coverification. In this project we partition the ADSL SOC design with software design and hardware design, the hardware software cosimulation is very important in this project. In our hardware test platform including FPGA,ARM testchip and other IP core testchip, ADSL application software can run in this test platform. If application software run correctly,we think system function design is finished. Then we begin timing simulation and physical design in submicro process,synthesis and timing simulation become more difficultly. At last, we complete the physical design using 0.18 μm CMOS process, the results show that this project is successful.