[硬件开发] SPI总线协议及SPI时序图详解.doc

说明：SPI，是英语Serial Peripheral Interface的缩写，顾名思义就是串行外围设备接口。SPI，是一种高速的，全双工，同步的通信总线，并且在芯片的管脚上只占用四根线，节约了芯片的管脚，同时为PCB的布局上节省空间，提供方便，正是出于这种简单易用的特性，现在越来越多的芯片集成了这种通信协议。 SPI是一个环形总线结构，由ss(cs)、sck、sdi、sdo构成，其时序其实很简单，主要是在sck的控制下，两个双向移位寄存器进行数据交换。 上升沿发送、下降沿接收
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[硬件开发] smbus20.pdf

说明：The System Management Bus (SMBus) is a two-wire interface through which various system component chips can communicate with each other and with the rest of the system. It is based on the principles of operation of I2C*. SMBus provides a control bu
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[硬件开发] testg200.pdf

说明：The smart battery data accuracy measurements are intended to test the accuracy of the data that a smart battery reports. This information must be accurate if a smart battery powered system is to obtain maximum battery run time and maximum battery l
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[硬件开发] sbsm100.pdf

说明：The Smart Battery System Manager is a specification that describes the requirements and the interface for a component or system of components that manage a number of Smart Batteries in a system. It autonomously connects one or more batteries to pow
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[硬件开发] sbsel110.pdf

说明：The Smart Battery Selector Specification is an adjunct to the Smart Battery Data Specification, providing a solution for many of the complexities associated with the implementation of multiple-battery systems such as notebook computers. Systems tha
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[硬件开发] sbdtg100.pdf

说明：The smart battery data accuracy measurements are intended to test the accuracy of the data that a smart battery reports. This information must be accurate if a smart battery powered system is to obtain maximum battery run time and maximum battery l
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[硬件开发] SATA 2.0.pdf

说明：This specification is one of a series of specifications that comprise Serial ATA II. This specification defines enhancements to the Serial ATA 1.0a specification that provide additional capabilities while retaining Serial ATA 1.0a compatibility and d
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[硬件开发] TIA-422-B-1994(R-2005).pdf

说明：TIA STANDARD Electrical Characteristics of Balanced Voltage Digital Interface Circuits
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[硬件开发] ITU-T-V11.pdf

说明：ELECTRICAL CHARACTERISTICS FOR BALANCED DOUBLE-CURRENT INTERCHANGE CIRCUITS OPERATING AT DATA SIGNALLING RATES UP TO 10 Mbit/SI)
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[硬件开发] RS-485与RS-422协议及应用.pdf

说明：RS-422由RS-232发展而来，它是为弥补RS-232之不足而提出的。为改进RS-232通信距离短、速率低的缺点，RS-422定义了一种平衡通信接口，将传输速率提高到10Mb/s，传输距离延长到1200米（速率低于100kb/s时），并允许在一条平衡总线上连接最多10个接收器。RS-422是一种单机发送、多机接收的单向、平衡传输规范，为扩展应用范围， EIA又于1983年在RS-422基础上制定了RS-485标准，增加了多点、双向通信能力，即允许多个发送器连接到同一条总线上，同时增加了发送
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[硬件开发] PMBus_Revision_1-2_Presentation_20100228.pdf

说明：• PMBus™ Specification And Application Profiles • PMBus In Today’s Servers • PMBus In Next Gen Servers • New Energy Reading Commands • Clarification Of Status Bits And SMBALERT# Signal • Other Coming Updates
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[硬件开发] onfi_3_1_spec.pdf

说明：Open NAND Flash Interface Specification This specification defines a standardized NAND Flash device interface that provides the means for a system to be designed that supports a range of NAND Flash devices without direct design pre-association. The
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