NET-DL 套件由日立SH7750处理 器、32M SDRAM 以及8M 的FLASH为用户的软件研发提供了足够的空间。板上提供非常 丰富的外设接口：一个10M/100M 自适应快速以太网接口、两个RS-232 串口、一个JTAG调 试口以及若干个基于PIO的指示灯。系统具有体积小、耗电低、处理能力强、网络功能强大 等特点，能够装载和运行嵌入式Linux 操作系统-NET-DL Boards Hitachi SH7750 processor, 32MB of SDRAM and 8MB of

DL/T645-97协议发送代码实例，这个部分能够通过串口接收和发送645协议包。-DL/T645-97 file send code

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This document defines the Application Programming Interface (API) for the OpenMAX Development Layer (DL). Published as an open standard by the Khronos Group, the DL provides a set of low-level primitives to ensure portability across processors an