Abstract: This paper creates an embedded system’s platform centering the microprocessor 88F6281 and based on Double Data Rate 2(DDR2) technique, it can also connect with hard-disks. Because of strict demand of the high frequency circuit to Signal Integrity(SI), it designs all subsystems of this platform on principle of circuits and printed circuits board, such as main memory subsystem, hard-disk’s interface subsystem, power supply subsystem. The platform can be efficiently used in many different applications of embedded system that needs high performance and large numbers of supplementary storage spaces. This platform works well and stably in the test to it.

Key words: embedded system, Serial Advanced Technology Attachment(SATA) standard, Double Data Rate 2(DDR2) standard, Signal Integrity(SI), Advanced RISC Machines(ARM) architecture

摘要： 以微处理器88F6281为核心，设计一种基于DDR2存储技术并可挂接硬盘的嵌入式系统平台。针对高频电路对信号完整性的严格要求，从电路原理与印制电路板2个方面设计该平台的主存、硬盘接口、电源等子系统。测试结果表明，该平台具有较高的性能，且稳定可靠，适合对系统性能和存储容量有较高要求的各类嵌入式应用。

关键词: 嵌入式系统, SATA标准, DDR2标准, 信号完整性, ARM架构

CLC Number: 

• TP368.1