wiki:venice/gw7905

Version 7 (modified by Ron Eisworth, 13 months ago) ( diff )

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Venice GW7905

The Venice GW7905 is a small single board computer that features a half-card Mini-PCIe slot, a full size Mini-PCIe slot, and USB. The GW7905 can be used with a GW7020 SOM that features the NXP i.MX8M Plus Quad Core processor running at 1.6GHz, 1GB DRAM, 8GB of Flash.

Features

  • NXP i.MX8M Plus Quadcore 1.6GHz SoC
  • 1GB LPDDR4 memory, 8GB eMMC Flash
  • Gateworks System Controller (GSC) with integrated EEPROM, button controller, and ADC's
  • GPS
  • microSD
  • I/O connector with I2C, SPI, GPIO
  • 1x full-length miniPCIe socket with PCI/USB3 (via mux) and USB2.0
  • 1x half-length miniPCIe socket with USB2.0 and USB3.0
  • USB Type-C with USB PD Sink capability and peripheral support
  • USB Type-C with USB 3.0 host support
  • Wide range buck/boost DC supply (3.6V to 20V)

Getting Started

The GW7905 can be powered using the J13 (2-pin) connector (supports 3.6 to 20V DC input) or through the J14 USB Type-C connector using a USB-C charger. The USB-C power profile supports the following profiles by default:

  • PDO1 (low priority) 5V@1.5A
  • PDO2 (medium) 15V@1.5A
  • PDO3 (high priority) 20V@1.0A

Other profiles can be programmed into the controller as well. Contact support for other options.

Depending on the type of cards loaded in the Mini-PCIe sites PD02 or PD03 profiles might be required. The board typically runs at 2.5W without any Mini-PCIe cards installed.

To get to the serial console, please use the standard Getting Started Wiki

Software

Please use the standard Venice software practices for this SBC, with a note that by default it ships with the i.MX8M Plus SOM. This means all image file names will have the 'p' in the name, indicating the 'plus'

Read more about software here: venice

Connectors

See the following sections for details on the board connectors and pinouts.

J13 Power

A 2MM pitch power header that supports 3.6 to 20V DC input. The 2-pin connector is at location J15 in a 1x2x2mm configuration. The mating connector is PAP-02V-S, available from Digikey as part number 455-1486-ND.. Pin 1 is power, and Pin 2 is ground.

J5 Mini-PCIe Full Length

Supports PCIe and USB 3.0 (controlled by mux), USB 2.0, PERST#, WDIS#

J12 Mini-PCIe Half Length

Supports USB 3.0, USB 2.0, PERST#, WDIS#

Some suggested Wifi cards that are USB 2.0 based and half card size:

No image "halfcard.png" attached to venice/gw7905

Realtek RTL8822BU chipset (which supports monitor mode and packet injection).

  • Sparklan WPET-236ACN(BT) half card radio: Link
  • Sparklan WPET-239CN(BT) half card radio: Link
  • JJPlus WMU6202 half card radio: Link

Qualcomm QCA9377 chipset

  • Sparklan WPEQ-160ACN(BT) half card radio: Link

J14 USB

This is a USB TYPE-C that can support USB 3.0 peripheral and power delivery to the board.

J1 USB

This is a USB TYPE-C that can support USB 3.0 host and power output from the board.

J15 MicroSD

A microSD socket with ESD protection

J3 GPIO Expansion

A 2x10 connector (20 pins total) that supports a variety of signals as defined in the table below.

The connector is a 20-pin header in a 2x10 configuration with 1.25mm pin spacing. The mating connector is a JST GHDR-20V-S, available from Digi-Key as part number 455-1913-ND. The mating connector pins are JST SGHD-002GA-P0.2, available from Digi-Key as part number 455-1914-2-ND. The digital I/O signals include signal conditioning in the form of a series 332 ohm resistor.

A dev kit cable is the GW10127: https://shop.gateworks.com/index.php?route=product/product&product_id=214&search=20

GW7905 J3.1 VDD_3P3 - - -
J3.2 GND - - -
J3.3 VDD_3P3 - - - Opt UART2_TX
J3.4 GND - - - Opt UART2_RX
J3.5 SPI_MOSI ECSPI2_MOSI managed by SPI driver
J3.6 SPI_MISO ECSPI2_MISO managed by SPI driver
J3.7 SPI_SCLK ECSPI2_SCLK managed by SPI driver
J3.8 SPI_SS0 ECSPI2_SS0 managed by SPI driver
J3.9 I2C3_SCL I2C3_SCL managed by I2C driver
J3.10 I2C3_SDA I2C3_SDA managed by I2C driver
J3.11 GSC_ADC1 - Can measure 0 to 5V
J3.12 GSC Tamper
J3.13 GPIOA GPIO1_IO13 Venice DIO Info
J3.14 GPIOB GPIO1_IO14
J3.15 GPIOC GPIO5_IO04
J3.16 GPIOD GPIO5_IO05
J3.17 5V Fan PWR
J3.18 GND - - -
J3.19 GSC FAN PWM
J3.20 GSC FAN Tach GSC Fan Info

J2 GPS Antenna

The GW7905 uses the ZOE-M8Q GPS.

More information about the GPS and antenna can be found on the GPS Wiki Page

Resources

This wiki page is specific to the GW7905. For general information, please use the rest of this wiki:

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