AMCC PowerPC 460EX 开发方案
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2009-04-27
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AMCC PowerPC 460EX 开发方案
关键词: PowerPC,嵌入式系统, Linux,
DDR2, PCI-Express, GbE,千兆以太网,
摘要: AMCC 公司的低成本 PowerPC 460EX 评估套件适用于高性能的 PowerPC 460EX 和
460GT 处理器,它采用 Linux 操作系统,为用户评估处理器和软件开发提供了容易使用的平台.
本文介绍了 PowerPC 460EX 的主要特性和方框图,以及 PowerPC 460EX 评估套件的主要
特性和亮点,方框图以及详细的电路图.
AMCC 公司的低成本 PowerPC 460EX 评估套件适用于高性能的 PowerPC 460EX 和
460GT 处理器,它采用 Linux 操作系统,为用户评估处理器和软件开发提供了容易使用的平台.
本文介绍了 PowerPC 460EX 的主要特性和方框图,以及 PowerPC 460EX 评估套件的主要
特性和亮点,方框图以及详细的电路图.
AMCC Introduces Low-Cost Evaluation Kits for High-Performance PowerPC 460EX
and 460GT Processors
The PowerPC 440 Core
To enhance overall throughput, the PowerPC 440 superscalar core incorporates a 7-stage
pipeline and executes up to two instructions per cycle. Its large 32-KB data cache and
32-KB instruction cache are 64-way setassociative. Versatile configurations enhance
performance tuning while optional parity protection preserves data integrity. For additional
system performance, the PowerPC 440 core includes dynamic branch prediction and 24
multiply accumulate instructions (MAC) that can be used for signal processing or other
numerical tasks, as well as non-blocking caches that can be managed in either
writethrough or write-back mode.
High Performance FPU
In addition to its powerful 440 core, the PowerPC 460EX includes a high-performance
FPU. This superscalar FPU supports both single and double precision operations, and
offers single cycle throughput on most instructions. The result is exceptional performance
in imaging and other calculation intensive applications.
Turbo Security (Optional)
The PPC460EX delivers advanced security capabilities with the optional Turbo Security
Engine. This security engine attaches directly to the PLB4 bus for the fastest possible
throughput between the PPC460 processor, memory, and the security engine itself. The
Turbo Security engines supports DES, 3DES, AES, ARC-4 encryption, MD-5, SHA-1
and SHA-256 hashing. The security engine includes a pseudo random number generator
as well as header and trailer protocol processor. The header/trailer protocol processor
eliminate any need for security processing by the PPC460 processor, freeing it to handle
applicationbased operations, while improving overall security performance. The engine
incorporates an on-chip true random number generator and a public key accelerator.
The algorithms are compliant with FIPS-140-2 and ANSI X9.17 Annex C.
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