The Inter IC bus or I2C bus is a simple bidirectional two wire bus designed primarily for general control and data transfer communication between ICs. Some of the features of the I2C bus are: • Two signal lines, a serial data line (SDA) and a serial clock line (SCL), and ground are required. A 12V supply line (500mA max.) for powering the peripherals often may be present. • Each device connected to the bus is software addressable by a unique address and simple master/ slave relationships exist at all times masters can operate as master-transmitters or as master-receivers. • The I2C bus is a true multi-master bus including collision detection and arbitration to prevent data corruption if two or more masters simultaneously initiate data transfer systems. • Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 KBit/s in the standard mode or up to 400 KBit/s in the fast mode.
标签： bus bidirectional primarily designed
上传时间： 2013-12-11
上传用户：jeffery
Programming the USB2DMX by Jan Menzel 3rd January 2002 Abstract This document describes how the USB2DMX DMX512 interface for the USB-port by Lighting- Solutions1 has to be programmed. It includes all information the software engineer has to supply to the operating systems USB-stack to talk to the USB2DMX
标签： Programming the describes Abstract
上传时间： 2016-10-31
上传用户：SimonQQ
手机基本原理: ETACS、GSM蜂窝手机是一个工作在双工状态下的收发信机。一部移动电话包括无线接收机(Receiver)、发射机(Transmitter)、控制模块(Controller)及人机界面部分(Interface)和电源(Power supply)。
标签： Transmitter Controller Receiver ETACS
上传时间： 2014-01-04
上传用户：wang5829
full wave rectifierDuring the period from 伪 to 蟺, the input voltage vs input current is are positive and the power flows from supply to the load. The converter is said to be operated at rectification mode .During the period from 蟺 to 蟺+伪 , the input voltage vs is negative and the input current is is positive and reverse power flows from load to the supply. The converter is said to be operated in inversion mode. Depending on the value of 伪, average output voltage can be either positive or negative and hence provides 2 quadrant operation.
标签： input rectifierDuring the positive
上传时间： 2017-04-10
上传用户：alan-ee
管脚号 管脚名称 LEVER 管脚功能描述 1 VSS 0V 电源地 2 VDD 5.0V 电源电压 3 VEE 5.0V~(-13V) 液晶显示器驱动电压 4 D/I H/L D/I=“H”,表示DB7~DB0为显示数据 D/I=“L”,表示DB7~DB0为显示指令数据 5 R/W H/L R/W=“H”,E=“H”,数据被读到DB7~DB0 R/W=“L”,E=“H→L”, DB7~DB0的数据被写到IR或DR 6 E H/L 使能信号：R/W=“L”,E信号下降沿锁存DB7~DB0 R/W=“H”,E=“H” DRAM数据读到DB7~DB0 7 DB0 H/L 数据线 8 DB1 H/L 数据线 9 DB2 H/L 数据线 10 DB3 H/L 数据线 11 DB4 H/L 数据线 12 DB5 H/L 数据线 13 DB6 H/L 数据线 14 DB7 H/L 数据线 15 CS1 L （19264A) 选择IC1,即（左）64列 16 RESET L 复位控制信号，RST=0有效 17 CS2 L （19264A) 选择IC2,即（中）64列 18 CS3 L （19264A) 选择IC3,即（右）64列 19 V0 -9V Negative Voltage for LCD driving 20 LED+ +5.0V The LED supply
上传时间： 2014-01-01
上传用户：541657925
This is schematic and Gerber files of PCB that is used for GPS tracking device with GSM link. Scheme has many valuable schematic features, like protected digital and analog I/Os, power part adapted for car power supply, etc. Can be used as a reference design for anyone who wants to make own GPS GSM tracking system based on SIM508 module from Simcom.
标签： schematic tracking Gerber Scheme
上传时间： 2013-12-19
上传用户：chfanjiang
QuickSteps books are recipe books for computer users. They answer the question 揌ow do I...??by providing a quick set of steps to accomplish the most common tasks with a particular program. The sets of steps are the central focus of the book. Sidebar QuickSteps provide information on how to do quickly many small functions or tasks that are in support of the primary functions. Sidebar QuickFacts supply information that you need to know about a subject. Notes, Tips, and Cautions augment the steps, but they are presented in a separate column to not interrupt the fl ow. Brief introductions are present, but there is minimal narrative otherwise. Many illustrations and fi gures, a number with callouts, are also included where they support the steps.
标签： books QuickSteps computer question
上传时间： 2013-12-11
上传用户：ljt101007
ap3706 datasheet 反击电源控制芯片，引用于适配器，adaptor, TV power supply
标签： AP3706
上传时间： 2016-04-24
上传用户：liquanchun
The TAS3204 is a highly-integrated audio system-on-chip (SOC) consisting of a fully-programmable, 48-bit digital audio processor, a 3:1 stereo analog input MUX, four ADCs, four DACs, and other analog functionality. The TAS3204 is programmable with the graphical PurePath Studio™ suite of DSP code development software. PurePath Studio is a highly intuitive, drag-and-drop environment that minimizes software development effort while allowing the end user to utilize the power and flexibility of the TAS3204’s digital audio processing core. TAS3204 processing capability includes speaker equalization and crossover, volume/bass/treble control, signal mixing/MUXing/splitting, delay compensation, dynamic range compression, and many other basic audio functions. Audio functions such as matrix decoding, stereo widening, surround sound virtualization and psychoacoustic bass boost are also available with either third-party or TI royalty-free algorithms. The TAS3204 contains a custom-designed, fully-programmable 135-MHz, 48-bit digital audio processor. A 76-bit accumulator ensures that the high precision necessary for quality digital audio is maintained during arithmetic operations. Four differential 102 dB DNR ADCs and four differential 105 dB DNR DACs ensure that high quality audio is maintained through the whole signal chain as well as increasing robustness against noise sources such as TDMA interference. The TAS3204 is composed of eight functional blocks: Clocking System Digital Audio Interface Analog Audio Interface Power supply Clocks, digital PLL I2C control interface 8051 MCUcontroller Audio DSP – digital audio processing 特性 Digital Audio Processor Fully Programmable With the Graphical, Drag-and-Drop PurePath Studio™ Software Development Environment 135-MHz Operation 48-Bit Data Path With 76-Bit Accumulator Hardware Single-Cycle Multiplier (28 × 48)
上传时间： 2016-05-06
上传用户：fagong
12bit 低功耗DAC 数模转换器 The MAX5302 combines a low-power, voltage-output, 12-bit digital-to-analog converter (DAC) and a precision output amplifier in an 8-pin µMAX package. It operates from a single +5V supply, drawing less than 280µA of supply current.
上传时间： 2017-02-21
上传用户：ckbihu
