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**ARM Cortex-R82 处理器技术参考手册概述**
ARM Cortex-R82 是ARM公司推出的高性能、实时处理内核,适用于需要高级安全特性和大内存支持的应用场景,如存储系统、工业自动化和网络基础设施。Cortex-R82处理器的设计旨在提供64位计算能力,同时保持对实时操作系统的兼容性。
### 1. 架构特点
- **64位ARMv8-R架构**: Cortex-R82基于ARMv8-R架构,提供了64位数据处理能力,支持AArch64和AArch32两种执行状态,兼顾高性能与向后兼容性。
- **多级缓存系统**: 配备了高效的L1和L2缓存,用于减少内存访问延迟,提升系统性能。
- **多核支持**: 支持多核配置,可实现并行处理,提高整体系统性能和响应速度。
- **硬件虚拟化**: 提供硬件虚拟化支持,允许多个操作系统或安全域并行运行,增强了系统的隔离性和安全性。
### 2. 安全特性
- **TrustZone技术**: 集成了ARM的TrustZone技术,创建安全和非安全世界,确保关键任务和敏感数据的安全处理。
- **内存保护单元(MPU)**: 通过精细的内存区域划分,强化了对内存访问的控制,防止非法或意外的数据访问。
- **安全隔离**: 支持ISO 26262 ASIL D等级的安全标准,适合于汽车电子等高安全要求领域。
### 3. 内存扩展
- **512位内存接口**: Cortex-R82处理器支持512位宽的内存接口,显著提升了内存带宽,满足大数据量传输的需求。
- **物理地址空间扩展**: 支持超过4GB的物理地址空间,允许接入更大容量的DDR内存,适应现代大容量存储应用。
### 4. 性能优化
- **动态电压和频率调整(DVFS)**: 允许根据工作负载调整电压和频率,平衡性能和功耗。
- **预取单元**: 通过预取数据到缓存,减少了等待时间,提高了系统响应速度。
### 5. 开发支持
- **调试和调试工具**: 提供全面的软件开发工具链,包括编译器、调试器和性能分析工具,简化软件开发流程。
- **RTOS支持**: 与多种实时操作系统(RTOS)兼容,便于快速开发实时应用程序。
### 6. 文档更新历史
文档的发行版号01p0和01p1表明了Cortex-R82处理器的开发进程,随着版本迭代,可能会包含错误修复、功能增强和新的技术信息。
### 7. 法律声明
ARM对本手册的知识产权进行了保护,并明确指出未经许可不得复制或使用其中的信息。同时,ARM不对文档中的任何错误或不准确之处承担责任,也不提供任何形式的明示或暗示保修。
ARM Cortex-R82处理器是针对高安全性和高性能需求设计的,其丰富的特性、强大的内存管理和先进的安全机制使其在实时系统中具有显著优势。开发者可以借助其技术参考手册,深入了解处理器的架构和功能,以便进行高效、安全的系统设计和应用开发。
Arm
®
Cortex
®
-R82 Processor
Revision: r1p1
Technical Reference Manual
Non-Confidential
Copyright © 2022 Arm Limited (or its affiliates).
All rights reserved.
Issue 02
102670_0101_02_en
Arm
®
Cortex
®
-R82 Processor Technical Reference Manual
Document ID: 102670_0101_02_en
Issue: 02
Arm
®
Cortex
®
-R82 Processor
Technical Reference Manual
Copyright © 2022 Arm Limited (or its affiliates). All rights reserved.
Release Information
Document history
Issue Date Confidentiality Change
0100-01 14 July 2022 Confidential First limited access release for r1p0
0101-02 24 November 2022 Non-Confidential First early access release for r1p1
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Arm
®
Cortex
®
-R82 Processor Technical Reference Manual
Document ID: 102670_0101_02_en
Issue: 02
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Arm
®
Cortex
®
-R82 Processor Technical Reference Manual
Document ID: 102670_0101_02_en
Issue: 02
Inclusive language commitment
Arm values inclusive communities. Arm recognizes that we and our industry have used language
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Arm
®
Cortex
®
-R82 Processor Technical Reference Manual
Document ID: 102670_0101_02_en
Issue: 02
Contents
Contents
1. Introduction....................................................................................................................................................14
1.1 Product revision status................................................................................................................................14
1.2 Intended audience........................................................................................................................................14
1.3 Conventions................................................................................................................................................... 14
1.4 Useful resources........................................................................................................................................... 16
2. The Cortex
®
-R82 processor...................................................................................................................... 18
2.1 About the Cortex
®
-R82 processor.......................................................................................................... 18
2.2 Features...........................................................................................................................................................19
2.3 Configuration options..................................................................................................................................21
2.3.1 Configuration parameters........................................................................................................................21
2.3.2 Integration-time configuration options................................................................................................ 27
2.4 Supported standards and specifications................................................................................................. 29
2.5 Design process..............................................................................................................................................31
2.6 Documentation..............................................................................................................................................31
2.7 Product revisions.......................................................................................................................................... 32
3. Technical overview.......................................................................................................................................34
3.1 Terminology....................................................................................................................................................34
3.2 Components...................................................................................................................................................34
3.3 Interfaces........................................................................................................................................................ 41
4. Programmers' model....................................................................................................................................45
4.1 About the programmers' model................................................................................................................45
4.2 Arm
®
v8-R AArch64 architecture concepts............................................................................................45
4.2.1 Architecture requirements.......................................................................................................................46
4.2.2 Execution state.......................................................................................................................................... 49
4.2.3 Exception levels.........................................................................................................................................49
4.2.4 Instruction set architecture.....................................................................................................................51
4.2.5 Data types.................................................................................................................................................. 51
4.2.6 Arm
®
v8-R AArch64 registers.................................................................................................................51
4.2.7 Memory model.......................................................................................................................................... 53
4.2.8 Security model........................................................................................................................................... 54
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Non-Confidential
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