データシート (A20-OLinuXino-MICRO)目次DISCLAIMER2CHAPTER 1: OVERVIEW51. Introduction to the chapter51.1 Features51.2 Target market and purpose of the board61.3 Board variants61.4 Board version used in the manual61.5 Organization6CHAPTER 2: SETTING UP THE OLINUXINO BOARD82. Introduction to the chapter82.1 Electrostatic warning82.2 Requirements82.3 Powering the board92.4 Button functions and NAND image restore in Android102.5 Prebuilt software102.6 Calibrating a display112.7 Software support12CHAPTER 3: A20-OLinuXino-MICRO BOARD DESCRIPTION133. Introduction to the chapter133.1 Layout (top view)133.2 Layout (bottom view)14CHAPTER 4: THE ALLWINNER A20 MICROCONTROLLER154. Introduction to the chapter154.1 The microcontroller154.2 Block diagram16CHAPTER 5: CONTROL CIRCUITY175. Introduction to the chapter175.1 Reset175.2 Clocks175.3 Power supply circuit17CHAPTER 6: CONNECTORS AND PINOUT186. Introduction to the chapter186.1 Communication with the A20186.1.1 USB-OTG communication (NAND firmware repair/update)186.1.2 UART0, UEXT1, UEXT2 interface206.2 SD card connectors216.2.1 SD/MMC1 slot216.2.2 SD/MMC slot226.3 PWR jack236.4 MIC_IN & HEADPHONES connectors246.5 USB_OTG connector256.6 USB_HOST connector266.7 Ethernet276.8 HDMI connector286.9 VGA connector296.10 SATA connector and power306.11 GPIO-1 (General Purpose Input/Output) 14pin connector**316.12 GPIO-2 (General Purpose Input/Output) 40pin connector316.13 GPIO-3 (General Purpose Input/Output) 10pin connector336.14 LCD_CON 40pin connector336.15 Jumper description356.16 Additional hardware components35CHAPTER 7: SCHEMATICS377. Introduction to the chapter377.1 Eagle schematic377.2 Physical dimensions38CHAPTER 8: REVISION HISTORY AND SUPPORT398. Introduction to the chapter398.1 Document revision398.2 Board revision408.3 Useful web links and purchase codes408.4 Frequently asked questions418.5 Product support44サイズ： 5.18MBページ数： 44Language: Englishマニュアルを開く
