摘要
针对单核处理器MMU无法满足TD-LTE射频一致性测试仪对存储系统提出的高性能需求,提出了一种基于功能强大的ARM+DSP双核嵌入式系统的MMU实现方法。根据TD-LTE系统的设计需求,重点介绍了双核MMU在不同环境下的设计及其与各种方案的对比分析。基于双核系统中ARM与DSP处理器各自特点和需求,设计了两种MMU。在实现重映射后,双核系统实现上电自启动,并顺利响应了来自GPIO的IRQ中断。
It is difficult for single core processor MMU to meet the high performance requirement of storage system for time-division long-term evolution （TD-LTE） RF conformance tester, thus the implementing method of MMU based on highly powerful ARM＋DSP dual core embedded system is proposed. In accordance with the design requirement of TD-LTE system, the designs of dual core MMU under different environment are introduced emphatically and various schemes are compared and analyzed. Two types of MMU are designed based on features and requirements of ARM and DSP respectively. After remaoping, the dual core system realizes automatic start-up, and successfully responses to the interrupts from GPIO and IRQ.
出处
《自动化仪表》
CAS
北大核心
2014年第1期55-58,62,共5页
Process Automation Instrumentation
基金
国家科技重大专项基金资助项目(编号:2011ZX03001-002)
关键词
嵌入式
双核处理器
ARM
DSP
MMU
Embedded Double-core ARM Digital signal processing（DSP） Memory management unit （MMU）
