此文档包括USB协议的全部协议说明，包括USBhost主站和Device从站的协议格式，从识别USB设备类型，到识别USB设备描述符，对设备描述符进行拆分和加密都有描述，根据设备描述符可以将数据部分进行拆解，对每个item都有详细的解释，我是之前对USB完全不了解，遇到问题什么都解决不了，连什么是主站什么是从站都分不清，调试期间一直连不上USB设备，期间还弄得两个Device设备相互连接，花了很多时间都没有搞定，最终还是通过看这个手册才学到一些，最让我开心的是这个文档是中文的，对于英语水平不是很好的朋友是个不错的选择，我通过这本书做成了一个自定义的从站，还做了一个可以识别三种设备类的主站，包括HID，U盘存储类等等，而且主站能够识别市场上现有的键盘，我试了两种型号的，鼠标试了三种，包括联想电脑，戴尔电脑，清华同方的，全部都能正常识别，能够拆分鼠标和键盘传递的信息，感觉非常有用，请小伙伴们放心下载，有什么问题不懂得，可以私信我
标签： usb
上传时间： 2021-12-09
上传用户：qdxqdxqdxqdx
高通(Qualcomm)蓝牙芯片QCC5151_硬件设计详细指导书（官方内部培训手册）共52页其内容是针对硬件设计、部分重要元器件选择(ESD，Filter）及走线注意事项的详细说明。2 Power management 2.1 SMPS 2.1.1 Components specification 2.1.2 Input power supply selection 2.1.3 Minimize SMPS EMI emissions 2.1.4 Internal LDOs and digital core decoupling 2.1.5 Powering external components 2.2 Charger 2.2.1 Charger connections.2.2.2 General charger operation2.2.3 Temperature measurement during charging 2.3 SYS_CTRL 3 Bluetooth radio3.1 RF PSU component choice 3.2 RF band-pass filter3.3 Layout (天线 走线的注意事项)4 Audio4.1 Audio bypass capacitors 4.2 Earphone speaker output4.3 Line/Mic input 4.4 Headphone output optimizition5 LED pads 5.1 LED driver 5.2 Digital/Button input 5.3 Analog input5.4 Disabled 6 Reset pin (Reset#)7 QSPIinterface 8 USB interfaces 8.1 USB device port8.1.1 USB connections8.1.2 Layout notes8.1.3 USB charger detection
上传时间： 2022-01-24
上传用户：XuVshu
Altera 官方的cyclone5的完整手册，共1091页。 非常详细，工程师开发必看。
标签： Cyclone
上传时间： 2022-01-28
上传用户：
The SI2302 uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 2.5V. This device is suitable for use as a Battery protection orin other Switching application
标签： si2302
上传时间： 2022-02-11
上传用户：
The PW3467 uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 4.5V. This device is suitable for use as a Battery protection orin other Switching application
标签： pw3467
上传时间： 2022-02-11
上传用户：qingfengchizhu
The PW3428 uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 4.5V. This device is suitable for use as a Battery protection orin other Switching application
标签： pw3428
上传时间： 2022-02-11
上传用户：zhaiyawei
The PW3407 uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 4.5V. This device is suitable for use as a Battery protection orin other Switching application
标签： pw3407
上传时间： 2022-02-11
上传用户：
The PW3400A uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 2.5V. This device is suitable for use as a Battery protection orin other Switching application
标签： pw3400a
上传时间： 2022-02-11
上传用户：
The PW3130 series product is a high integration solution for lithium-lion/polymer batteryprotection.PW3130 contains advanced power MOSFET, high-accuracy voltage detection circuits anddelay circuits. PW3130 is put into an ultra-small SOT23-5 package and only one external componentmakes it an ideal solution in limited space of battery pack. PW3130 has all the protection functionsrequired in the battery application including overcharging, overdischarging, overcurrent and loadshort circuiting protection etc. The accurate overcharging detection voltage ensures safe and fullutilization charging.The low standby current drains little current from the cell while in storage. Thedevice is not only targeted for digital cellular phones, but also for any other Li-Ion and Li-Polybattery-powered information appliances requiring long-term battery life
标签： pw3130
上传时间： 2022-02-11
上传用户：fliang
The PW2606B is a front-end over voltage and over current protection device. It achieves wide inputvoltage range from 2.5VDC to 40VDC. The over voltage threshold can be programmed externally orset to internal default setting. The low resistance of integrated power path nFET switch ensures betterperformance for battery charging system applications. It can deliver up to 1A current to satisfy thebattery supply system. It integrates the over-temperature protection shutdown and auto-recoverycircuit with hysteresis to protect against over current events
标签： pw2606b
上传时间： 2022-02-11
上传用户：
