此文檔包括USB協議的全部協議說明，包括USBhost主站和Device從站的協議格式，從識別USB設備類型，到識別USB設備描述符，對設備描述符進行拆分和加密都有描述，根據設備描述符可以將數據部分進行拆解，對每個item都有詳細的解釋，我是之前對USB完全不了解，遇到問題什么都解決不了，連什么是主站什么是從站都分不清，調試期間一直連不上USB設備，期間還弄得兩個Device設備相互連接，花了很多時間都沒有搞定，最終還是通過看這個手冊才學到一些，最讓我開心的是這個文檔是中文的，對于英語水平不是很好的朋友是個不錯的選擇，我通過這本書做成了一個自定義的從站，還做了一個可以識別三種設備類的主站，包括HID，U盤存儲類等等，而且主站能夠識別市場上現有的鍵盤，我試了兩種型號的，鼠標試了三種，包括聯想電腦，戴爾電腦，清華同方的，全部都能正常識別，能夠拆分鼠標和鍵盤傳遞的信息，感覺非常有用，請小伙伴們放心下載，有什么問題不懂得，可以私信我
標簽： usb
上傳時間： 2021-12-09
上傳用戶：qdxqdxqdxqdx
高通(Qualcomm)藍牙芯片QCC5151_硬件設計詳細指導書（官方內部培訓手冊）共52頁其內容是針對硬件設計、部分重要元器件選擇(ESD，Filter）及走線注意事項的詳細說明。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 (天線 走線的注意事項)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
上傳時間： 2022-01-24
上傳用戶：XuVshu
Altera 官方的cyclone5的完整手冊，共1091頁。 非常詳細，工程師開發必看。
標簽： Cyclone
上傳時間： 2022-01-28
上傳用戶：
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
標簽： si2302
上傳時間： 2022-02-11
上傳用戶：
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
標簽： pw3467
上傳時間： 2022-02-11
上傳用戶：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
標簽： pw3428
上傳時間： 2022-02-11
上傳用戶：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
標簽： pw3407
上傳時間： 2022-02-11
上傳用戶：
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
標簽： pw3400a
上傳時間： 2022-02-11
上傳用戶：
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
標簽： pw3130
上傳時間： 2022-02-11
上傳用戶：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
標簽： pw2606b
上傳時間： 2022-02-11
上傳用戶：
