高通qualcommon蓝牙芯片QCC3056详细规格书共有112页,开发人员必备手册 支持蓝牙标准5.2 ->Quad-core processor architecture ->High-performance programmable Bluetooth mono audio Soc ->Low power modes to extend battery life. ->For Qualcomm TrueWirless stereo earbuds application.主要特点如下。
上传时间: 2022-01-24
上传用户:zhanglei193
这是我在做大学教授期间推荐给我学生的一本书,非常好,适合入门学习。《python深度学习》由Keras之父、现任Google人工智能研究员的弗朗索瓦•肖莱(François Chollet)执笔,详尽介绍了用Python和Keras进行深度学习的探索实践,包括计算机视觉、自然语言处理、产生式模型等应用。书中包含30多个代码示例,步骤讲解详细透彻。作者在github公布了代码,代码几乎囊括了本书所有知识点。在学习完本书后,读者将具备搭建自己的深度学习环境、建立图像识别模型、生成图像和文字等能力。但是有一个小小的遗憾:代码的解释和注释是全英文的,即使英文水平较好的朋友看起来也很吃力。本人认为,这本书和代码是初学者入门深度学习及Keras最好的工具。作者在github公布了代码,本人参照书本,对全部代码做了中文解释和注释,并下载了代码所需要的一些数据集(尤其是“猫狗大战”数据集),并对其中一些图像进行了本地化,代码全部测试通过。(请按照文件顺序运行,代码前后有部分关联)。以下代码包含了全书约80%左右的知识点,代码目录:2.1: A first look at a neural network( 初识神经网络)3.5: Classifying movie reviews(电影评论分类:二分类问题)3.6: Classifying newswires(新闻分类:多分类问题 )3.7: Predicting house prices(预测房价:回归问题)4.4: Underfitting and overfitting( 过拟合与欠拟合)5.1: Introduction to convnets(卷积神经网络简介)5.2: Using convnets with small datasets(在小型数据集上从头开始训练一个卷积网络)5.3: Using a pre-trained convnet(使用预训练的卷积神经网络)5.4: Visualizing what convnets learn(卷积神经网络的可视化)
上传时间: 2022-01-30
上传用户:
STM32L053C8T6数据手册Features • Ultra-low-power platform – 1.65 V to 3.6 V power supply – -40 to 125 °C temperature range – 0.27 µA Standby mode (2 wakeup pins) – 0.4 µA Stop mode (16 wakeup lines) – 0.8 µA Stop mode + RTC + 8 KB RAM retention – 139 µA/MHz Run mode at 32 MHz – 3.5 µs wakeup time (from RAM) – 5 µs wakeup time (from Flash) • Core: ARM® 32-bit Cortex®-M0+ with MPU – From 32 kHz up to 32 MHz max. – 0.95 DMIPS/MHz • Reset and supply management – Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds – Ultralow power POR/PDR – Programmable voltage detector (PVD) • Clock sources – 1 to 25 MHz crystal oscillator – 32 kHz oscillator for RTC with calibration – High speed internal 16 MHz factory-trimmed RC (+/- 1%) – Internal low-power 37 kHz RC – Internal multispeed low-power 65 kHz to 4.2 MHz RC – PLL for CPU clock • Pre-programmed bootloader – USART, SPI supported • Development support – Serial wire debug supported • Up to 51 fast I/Os (45 I/Os 5V tolerant) • Memories – Up to 64 KB Flash with ECC – 8KB RAM – 2 KB of data EEPROM with ECC – 20-byte backup register
标签: stm32l053c8t6
上传时间: 2022-02-06
上传用户:
cortex M33资料包:Arm Cortex-M3 Processor Datasheet.pdfcortex_m3_trm.pdfcortex_m3_user-guide.pdf......
标签: arm cortex-m33
上传时间: 2022-02-11
上传用户:kingwide
数字示波器功能强大,使用方便,但是价格相对昂贵。本文以Ti的MSP430F5529为主控器,以Altera公司的EP2C5T144C8 FPGA器件为逻辑控制部件设计数字示波器。模拟信号经程控放大、整形电路后形成方波信号送至FPGA测频,根据频率值选择采用片上及片外高速AD分段采样。FPGA控制片外AD采样并将数据输入到FIFO模块中缓存,由单片机进行频谱分析。测试表明:简易示波器可以实现自动选档、多采样率采样、高精度测频及频谱分析等功能。Digital oscilloscope is powerful and easy to use, but also expensive. The research group designed a low-cost digital oscilloscope, the chip of MSP430F5529 of TI is chosen as the main controller and the device of EP2C5T144C8 of Altera company is used as the logic control unit. Analog signal enter the programmable amplifier circuit, shaping circuit and other pre-processing circuit. The shaped rectangular wave signal is sent to FPGA for measure the frequency. According to the frequency value to select AD on-chip or off-chip high-speed AD for sampling. FPGA controls the off-chip AD sampling and buffers AD data by FIFO module. The single chip microcomputer receives the data, and do FFT for spectrum analysis. The test shows that the simple oscilloscope can realize automatic gain selection, sampling at different sampling rates, high precision frequency measurement and spectrum analysis.
上传时间: 2022-03-27
上传用户:
第一章移植内核1.Linux内核基础知识在动手进行 Linux内核移植之前,非常有必要对 Linux内核进行一定的了解下面从 Linux内核的版本和分类说起1.L.I Linux版本Linux内核的版本号可以从源代码的顶层目录下的 Makefile中看到,比如2.6.29.1内核的 Makefile中:其中的 VERSION和 PATCHLEVELI组成主版本号,比如24、2.526等,稳定版本的德主版本号用偶数表示(比如26的内核),开发中的版本号用奇数表示(比如25),它是下一个稳定版本内核的前身。SUBLEVEL称为次版本号,它不分奇偶,顺序递增,每隔1-2个月发布一个稳定版本1 EXTRAVERSION称为扩展版本号,它不分奇偶,顺序递增,每周发布几次扩展本版号。1,1,2什么是标准内核按照资料上的习惯说法,标准内核(或称基础内核)就是指主要在htp/www.kernelorg/维护和获取的内核,实际上它也有平台属性的。这些linux内核并不总是适用于所有imux支持的体系结构。实际上,这些内核版本很多时候并不是为一些流行的嵌入式 linux系统开发的,也很少运行于这些嵌入式inux系统上,这个站点上的内核首先确保的是在 InteIX86体系结构上可以正常运行,它是基于X86处理器的内核,如对inux-24l8ab2的配置 make menuconfig时就可以看到,Processor type and features->中只有386、486、586/K5/5x86/6x866x86MX、Pentium-Classic、Pentium-MMX、Pentium-Pro/Celeron/Pentium-ll,Pentium-Ill/Celeron(Coppermine),Pentium-4K6K6-/k6-Ⅲl、Athlon/Duron/K7、Elan,Crusoe,Winchip-C6·winchip-2
标签: linux
上传时间: 2022-04-01
上传用户:
高通蓝牙芯片QCC5144 详细规格手册datasheet (共99页)含各个接口说明,应用原理图等信息。 QualcommTrueWireless™ stereo earbuds (无线双耳) Features(特点) ■ Qualifiedto Bluetooth v5.2 specification (蓝牙协议标准5.2) ■ 120 MHz Qualcomm ® Kalimba ™ audio DSP (120MHz 的音频DSP处理器) ■ 32 MHz/80MHz Developer Processor for applications ■ Firmware Processor for system ■ Flexible QSPI flash programmable platform (可编程的QSPI外挂存储器) ■ High-performance 24‑bit audio interface (高性能的24位音频接口) ■ Digital and analog microphone interfaces (含 数字 及模拟 MIC接口) ■ Flexible PIO controller and LED pins with PWM support ■ Serial interfaces: UART, Bit Serializer (I²C/SPI), USB 2.0 (支持串口,I2C, SPI,USB 接口) ■ Advanced audio algorithms (高级的音频算法) ■ ActiveNoise Cancellation: (支持ANC 主动降噪功能) Hybrid, Feedforward, and Feedback modes, using Digital or Analog Mics, enabled using license keys available from Qualcomm® ■ Qualcomm ® aptX ™ and aptX HD Audio (支持独特的aptx 功能)
上传时间: 2022-04-07
上传用户:
高通蓝牙芯片QCC3040 详细规格手册datasheet (共96页)QualcommTrueWireless™ stereo earbuds (无线双耳)Features(特点)■ Qualifiedto Bluetooth v5.2 specification (蓝牙协议标准5.2)■ 120 MHz Qualcomm ® Kalimba ™ audio DSP (120MHz 的音频DSP处理器)■ 32 MHz Developer Processor for applications (32MH的 应用处理器)■ Firmware Processor for system■ Flexible QSPI flash programmable platform (可编程的QSPI外挂存储器)■ High-performance 24‑bit audio interface (高性能的24位音频接口)■ Digital and analog microphone interfaces (含 数字 及模拟 MIC接口)■ Flexible PIO controller and LED pins with PWM support■ Serial interfaces: UART, Bit Serializer (I²C/SPI), USB 2.0 (支持串口,I2C, SPI,USB 接口)■ Advanced audio algorithms (高级的音频算法)■ ActiveNoise Cancellation: (支持ANC 主动降噪功能)Hybrid, Feedforward, and Feedback modes, using Digitalor Analog Mics, enabled using license keys available from Qualcomm®■ Qualcomm ® aptX ™ and aptX HD Audio (支持独特的aptx 功能)
上传时间: 2022-04-09
上传用户:slq1234567890
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
上传用户:
最近入手了Pandaboard的高清摄像头子板一块,顺便学习了MIPICSI2接口,给各位网友分享一下。这个高清摄像头采用ov5640芯片,500万像素,支持自动聚焦,这也是手机和平板里面用得比较多的一种cmos传感芯片。OV5640同时支持并向和串行数据传输,当然串行传输(也就是MIPI方式)速度更快,能够支持更高的分辨率,一般手机里300万或者500万像素的摄像头一般都是MIPI接口。不妨再多提一下MIPI标准,MIPI是做移动应用处理器的几家巨头公司成立的联盟,旨在定义移动应用处理器的接口标准,其全称为“Mobile Industry Processor Interface”。现在用的比较多是MIPI框架中的摄像头标准和显示标准,即MIPICSI和MIPI DSI。CSI代表Camera Serial Interface,而DSI代表Display Serial Interface。现在CSI已经升级到CSI2.0版本,即MIPICSI2接口。本文所提到的Pandaboard 高清摄像头使用的就是MIPICSI2接口。先贴一个Pandaboard安装好摄像头子板的图片:
上传时间: 2022-06-24
上传用户:jason_vip1