该文件包括了华为P8手机所有的电路图设计，其中主基板部分包括了片上电源模块和电源管理模块，SOC各个外设接口部分，eMMC和DDR3，LCD，USB，Camera，Codec，Audio/Speaker,SIM Card,FPC 接口以及headphone等等，而调制解调器部分则包括了RF 接口，RF Transceiver，RF ANT Tunner,BW/WLAN/FM/NFC,GPS,RF PA等等部分，各个子电路图非常详尽，具有极高的参考价值
上传时间： 2022-04-17
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本文提出基于AD2S1210的旋变信号转换电路,给出了具体的电路实现方法和配置方法.相比以往的RDC方案,本系统具有精度高,设计灵活,可靠性高等特点,可广泛应用于各种伺服系统中.In this paper, the switching signal conversion circuit based on ADS1210 is proposed, and the specific circuit implementation and configuration method are given. Compared with the previous RDC scheme, this system has the characteristics of high precision, flexible design and high reliability, and can be widely used in various servo systems.
标签： ad2s1210
上传时间： 2022-05-04
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ATS2819/ATS2819P标准应用方案主要分为以下功能模块：Power Supply，BlueTooth，Audio Input/Output（包括codec、I2C、SPDIF），FM Receiver，disaplay（LED&LCD），USB，SPI NOR Flash Memory，SD/MMC/MS Card等。1.2原理图设计总体原则1原理图设计需要按照方案规格的要求实现各项硬件功能，尽量避免功能模块相互间的资源冲突。如果存在I/O复用，接收复用等情况，除了需注意检查I/O上电状态，接口时序等，还需要注意复用的SIO工作频率与工作电压域是否符合要求(如WIO)，确保功能设计正确实现。2原理图设计要求性能达到要求。如稳定性，启动电压，功耗，ESD，EMI等。要注意检查模块电源开关状态，选择的原件标称及精度、材质，接口保护元件和EMI滤波器等。3系统时钟26MHZ，要求CL为7~9PF，精度为+-10PPM。这样才能保证系统能正常工作。4当设计PCB受限于模具大小时，各个模块无法保证均能得到最优的布局布线(如滤波电容要求靠近IC、走线上要求尽量少的过孔与尽可能短的走线)。因为在此给出一个模块优先级以供设计人员参考，从而提高方案设计的效率，增加一版work的可行性。将优先级以阿拉伯数据排列
上传时间： 2022-06-07
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RK3288资料说明： DDR3 方案采用 4x16bit、 2x32bit 等模板； LPDDR2 方案采用 2 x 32bit（168pin）、 1 x 32bit x 2channel（pop216pin）、 1x32bitx 2channel（pop220pin） 等模板； LPDDR3 方案采用 2 x 32bit（178pin）模板 PMIC 方案采用 RT5C620(单节电池)、 ACT8846（双节电池）； Memory 默认为 eMMC Flash，兼容 Nand Flash 及 tSD 的设计； TP 包括 COF 及三种 COB 接法； 显示包括 eDP、单 MIPI、双 MIPI、 LVDS 四种兼容设计； 3G 包括 3G-UNA（DS 7.2Mbps）、 3G-UNA LITE（DS 14.4Mbps） 两种模组兼容； Audio 包括 ES8323（低成本）、 ALC5631、 ALC3224（BT 语音）三种兼容； WIFI 兼容 AP6XXX 各模开发包包含以下几部分资料1、RK3288原厂参考原理图，DSN原始文档。2、RK3288发布原理图修改记录、规格书等3、RK3288原厂参考的DDR模板，包含DSN原理图和pads PCB4、RK3288 PCB库文件总的来说，拿到这份资料之后即可进行RK3288的硬件开发设计，可以画原理图、PCB。
上传时间： 2022-06-12
上传用户：bluedrops
高通蓝牙芯片qcc5127详细规格书datasheet.pdf英文版，共97页 详细说明:1 Package information(pin allocations, pios terminal functions)2 Bluetooth subsystem 3 Cystal oscillator4 System powerstates (Idel,Active,Sleep, Off)5 Host Interface subsystem6 Applications subsystem ( QSPI Flash controller)7 Audio subsystem(Dual core Kalimba, ROM, RAM and caches, Data, engine)8 Audio interfaces ( Analog, Digital, Simultaneous audio routing)9 Peripheral interfaces (PIOs, LED, USB, SPI, UART)10 Boot manager11 System manager12 example application schematic13 Electrical characteristics14 Audio performance15 Bluetooth performance16 Power consumption
上传时间： 2022-06-12
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BK7251 datasheet, IOT芯片，WIFI AUDIO SOC芯片， BK7251蓝牙/wifi音频模块芯片, 支持音频解码，可用于故事机，播报机等
上传时间： 2022-06-14
上传用户：jason_vip1
Mathematical modeling has become an important part of the research and devclopment work in engineering and scicnce. Retaining a competitive edge requiresa fast path between ideas and prototypes, and in this regard mathematical modeling and simulation provide a valuable shortcut for understanding both qualitative and quantitative aspects of scientific and engineering design. To assist you in gaining this edge, COMSOL Multiphysics offers state-of-the art performance, being built from the ground up with a Java3D interface and C/C++ solvers.The Acoustics Module is an optional package that extends the COMSOL Multiphysicsmodcling cnvironment with customized user interfaces and functionality optimizcd for the analysis of acoustics. Like all modules in the COMSOL family, it provides a brary of prewritten ready-to-run models that make it quicker and casier to analyze disciplinc-specific problcms.
上传时间： 2022-06-19
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INTRODUCTION In the past, adding speech recording and playback capability to a product meant using a digital signal processor or a specialized audio chip. Now, using a simplified Adaptive Differential Pulse Code Modulation(ADPCM) algorithm, these audio capabilities can be added to any PICmicro device. This application note will cover the ADPCM compression and decompression algorithms, performance comparison of all PICmicro devices, and an application using a PIC16C72 micro-controller.DEFINITION OF TERMS step size -value of the step used for quantization of ana-log signals and inverse quantization of a number of steps.quantization -the digital form of an analog input signal is represented by a finite number of steps.adaptive quantization -the step size of a quantizer is dramatically changed with time in order to adapt to a changing input signal.inverse quantizer -a finite number of steps is converted into a digital representation of an analog signal.
上传时间： 2022-06-20
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這包 BSP 支持了NUC970 系列芯片. 新唐科技的 NUC970 系列芯片是以 ARM926EJS 為核心的系统级單芯片. 包含了 16kB I-Cache 以及 16kB D-Cache 以及MMU 記憶體管理模塊. 最高支援到 300MHz 的頻率, 並且提供了豐富的外設接口周邊. 有USB 快速Host/Device, SDHC, 支援TFT LCD介面, 網路接口 和I2S audio介面, 有11 組UART…等. 並可以由 NAND flash, SPI Flash 開機.
标签： NUC970
上传时间： 2022-06-23
上传用户：slq1234567890
Introduction The Sil9135/Sil9135A HDMI Receiver with Enhanced Audio and Deep Color Outputs is a second-generation dual-input High Definition Multimedia Interface(HDMI)receiver. It is software-compatible with the Sil9133receiver, but adds audio support for DTS-HD and Dolby TrueHD. Digital televisions that can display 10-or 12-bit color depth can now provide the highest quality protected digital audio and video over a single cable. The Sil9135and Sil9135A devices, which are functionally identical, can receive Deep Color video up to 12-bit,1080p @60Hz. Backward compatibility with the DVI 1.0specification allows HDMI systems to connect to existing DVI 1.0 hosts, such as HD set-top boxes and PCs. Silicon Image HDMI receivers use the latest generation Transition Minimized Differential Signaling(TMDS) core technology that runs at 25-225 MHz.The chip comes pre-programmed with High-bandwidth?
上传时间： 2022-06-25
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