Hardware Overview rev. 2.8-rus

Материал из Wiren Board
Версия от 19:07, 2 октября 2013; 46.39.244.90 (обсуждение) (Новая страница: «== Overview == This page describes Wiren Board rev. 2.8 (first public revision). The Wiren Board consists of two PCBs: * Olinuxino imx233-Micro with power capa…»)

Overview

This page describes Wiren Board rev. 2.8 (first public revision).

The Wiren Board consists of two PCBs:

  • Olinuxino imx233-Micro with power capacitors, TV out jack, power jack and USB jack desoldered. At present, original Olinuxino imx233-MICRO manufactured by Olimex is used. Most of the rev. 2.8 Wiren Board's are equiped with rev. C Olinuxino's. This board contains CPU (Freescale i.MX233) and RAM.
  • Main Wiren Board PCB manufactured by Contactless Devices, LLC.


The main PCB contains:

  • power management circuit based on LTC4002 chip.
  • USB to Ethernet converter and USB hub, SMSC LAN9514
  • USB Wi-Fi [[RTL8188_assembly|micro assembly] based on Realtek RTL8188 chip.
  • NFC circuit based on NXP PN532. There is also trace antenna for NFC on the PCB. See also NFC Subsystem.
  • Analog multiplexer for multiplexing 8 ADC channels (7 terminal blocks and Vin). See also ADC.
  • SPI-to-UART bridge IC - NXP SC16IS752
  • SPI GPIO expander - Microchip MCP23S08
  • GSM/GPRS modem - SIMCOM SIM900R
Wiren Board rev. 2.8



Terminal blocks

location function GPIO (if applicable) olinuxino pin comments
Terminal block 2 FET/ADC 32 3 @ CON1 GPIO high to open FET; ADC channel 3
Terminal block 3 FET/ADC 33 4 @ CON1 GPIO high to open FET; ADC channel 0
Terminal block 4 FET/ADC 34 5 @ CON1 GPIO high to open FET; ADC channel 1
Terminal block 5 FET/ADC 35 6 @ CON1 GPIO high to open FET; ADC channel 2
Terminal block 6 FET/ADC 39 10 @ CON1 GPIO high to open FET; ADC channel 4
Terminal block 7 FET/ADC 1 12 @ CON1 GPIO high to open FET; ADC channel 6
Terminal block 8 GND
Terminal block 9 GPIO/ADC 2 13 @ CON1 ADC channel 7
Terminal block 10 GPIO 3 14 @ CON1
Terminal block 11 GPIO 4 15 @ CON1
Terminal block 12 RS-485 A UART1 from sc16is752, if RS-485 present
Terminal block 13 RS-485 B UART1 from sc16is752, if RS-485 present
Terminal block 14 GND
Terminal block 15 +3.3v
Terminal block 16 +5.0v
Terminal block 17 Vin input voltage; ADC channel 5
Terminal block 18 GND
Terminal block 19 Power FET 60 28 @ CON2 with PWM


Externaly routed GPIOs

51 27 @ CON1 UEXT2 I2C SCL
53 28 @ CON1 UEXT2 I2C SDA
19 12 @ CON2 UEXT1 CS/GPIO
91 25 @ CON2 UEXT2 CS/GPIO


GPIOs for internal use

36 7 @ CON1 ADC MUX A
37 8 @ CON1 ADC MUX B
38 9 @ CON1 ADC MUX C
5 16 @ CON1 IRQ
6 17 @ CON1 GPRS power key
7 18 @ CON1 GPRS reset
16 19 @ CON1 3.3V rail shutdown
17 20 @ CON1 sc16is752 chip select
50 25 @ CON1 LTC4002 shutdown
52 26 @ CON1 MCP23S08 chip select
92 24 @ CON2 NFC PN532 chip select
Источник — https://wirenboard.com/wiki/index.php?title=Hardware_Overview_rev._2.8-rus&oldid=49