The RiskFive FPGA On Module (FOM) will be hosted by a development motherboard providing the SD card, USB, VGA video, and Ethernet connectors. The FOM will be connected to a motherboard with two high-density Hirose connectors, secured with four mounting screws.The board shown below is targeting the development of Internet-Of-Things applications. We are providing as many as three different Ethernet chips for the development of lean IOT (W5500) and mid-range IOT (W5300). The gigabit Ethernet will provide high speed streaming. Additionally, the USB-3 chip will support both the streaming as well as in-system monitoring.
The application-specific boards can be derived by replacing one or more board's subsystems with other subsystems needed for a particular application. Please inquire if you need a specific set of subsystems or features.
Technical specs.
- 100M Ethernet.
- Ethernet 1: Wiznet chip W5500 with SPI connection to the FPGA.
- Ethernet 2: Wiznet chip W5300 with 16 bit parallel connection to the FPGA.
- Gigabit Ethernet.
- Texas Instruments DP83867CSRGZT with SGMII connection to the FPGA. Note: This chip is on the FOM. The RJ45 connector is on the motherboard.
- USB-3.
- FTDI chip FT601Q with 32 bit connection to the FPGA. This chip is nominally capable of 400 megabytes per second burst rate.
- Video specifications.
- VGA output generated by the Analog Devices video DAC chip ADV7125.
- PS/2 interface.
- Two PS/2 connectors are provided with 5V signal level.
- The connectors can be used for keyboard and mouse.
- RS-232 interface.
- One RJ11 jack is provided with RS-232 signal levels.
- Hardware flow control is used (CTS connected directly to RTS).
- Four push buttons.
- Momentary power cycle of the FOM.
- Hardware reset of the Ethernet and USB-3.
- Software reset of the FOM.
- User interrupt to the FOM.
- Power.
- Switchcraft 2.1 mm power jack for a +5V wall power supply.
- The board can be powered with the USB-3 connector.
- The FTDI cable type C232HD-EDHSP-0 can power the FOM directly (up to 450 mA).
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