说明：  本应用指南讲述 Spartan-3E 系列中的串行外设接口 (SPI) 配置模式。SPI 配置模式拓宽了 SpartanTM-3E 设计人员可以使用的配置解决方案。SPI Flash 存储器件引脚少、封装外形小而 且货源广泛。本指南讨论用 SPI Flash 存储器件配置 Spartan-3E FPGA 所需的连接，并且介绍 SPI 模式的配置流程。本指南还提供一种实用工具，用于在原型开发过程中对选定的 STMicroelectronics 和 Atmel SPI 器件进行在系统编程。
(Application Guide on the Spartan-3E series of serial peripheral interface (SPI) configuration mode. SPI configuration mode broadened SpartanTM-3E designers can use to configure the solution. SPI Flash memory-pin small package and supply a wide range of small form factor. Discussed in this Guide SPI Flash memory with Spartan-3E FPGA configuration required to connect, and introduced the SPI mode configuration process. This guide also provides a practical tool for the prototype development process in selected STMicroelectronics and Atmel SPI programmable devices in the system.)