The I/O Aggregation Over USB with CrossLinkU-NX Reference Design create plug-and-play peripheral expansion on USB-enabled FPGA and signal protocol conversion from USB to I2C, SPI, and GPIO. The Lattice Semiconductor I/O Aggregation Over USB2 reference design provides developers a template to bridge USB to several interfaces defined below from a Windows PC and provides this conversion for Lattice Semiconductor CrossLinkU-NX devices.
Features
- Wrapper RTL includes RISC-V, System Memory, and AHB bridge for USB enumeration
- Maximum 8 endpoints can be flexibly configured as user selected peripheral:
- GPIO Input
- GPIO Output
- I2C Controller
- SPI Controller
- Windows drivers and Python script to communicate to the peripherals
