OLIMEX A20-OLINUXINO-LIME2-EMMC User Manual page 4

OLIMEX© 2015
5.3 Power supply circuit .............................................................................................................. 23
CHAPTER 6: CONNECTORS AND PINOUT ...................................................... 24
6. Introduction to the chapter ..................................................................................................... 24
6.1 Communication with the A20 ............................................................................................... 24
6.1.1 USB-OTG communication (NAND firmware repair/update) .................................................................. 24
6.1.2 UART0, UEXT1, UEXT2 interface ............................................................................................................ 26
6.2 SD card connectors ................................................................................................................ 27
6.2.1 SD/MMC1 slot .............................................................................................................................................. 28
6.2.2 SD/MMC slot ................................................................................................................................................ 29
6.3 PWR jack ................................................................................................................................ 30
6.4 MIC_IN & HEADPHONES connectors .............................................................................. 30
6.5 USB_OTG connector ............................................................................................................. 31
6.6 USB_HOST connector ........................................................................................................... 33
6.7 Ethernet .................................................................................................................................. 34
6.8 HDMI connector .................................................................................................................... 36
6.9 VGA connector ....................................................................................................................... 37
6.10 SATA connector and power ................................................................................................. 38
6.11 GPIO ports ............................................................................................................................ 39
6.11.1 GPIO-1 (General Purpose Input/Output) 40pin connector** ................................................................ 39
6.11.2 GPIO-2 (General Purpose Input/Output) 40pin connector .................................................................... 40
6.11.3 GPIO-3 (General Purpose Input/Output) 40pin connector .................................................................... 41
6.12 LCD_CON 40pin connector ................................................................................................ 43
6.13 Jumper description .............................................................................................................. 44
6.14 Additional hardware components ...................................................................................... 45
CHAPTER 7: SCHEMATICS .................................................................................. 46
7. Introduction to the chapter ..................................................................................................... 46
7.1 Eagle schematic ...................................................................................................................... 46
7.2 Physical dimensions ............................................................................................................... 47
CHAPTER 8: REVISION HISTORY AND SUPPORT ........................................ 48
8. Introduction to the chapter ..................................................................................................... 48
8.1 Document revision ................................................................................................................. 48
8.2 Board revision ........................................................................................................................ 50
8.3 Useful web links and purchase codes ................................................................................... 51
8.4 Frequently asked questions ................................................................................................... 52
8.5 Product support ..................................................................................................................... 56
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A20-OLinuXino-MICRO user's manual