Usb Host - Digilent Genesys Reference Manual

Genesys Reference Manual
The Genesys BSB support package automatically generates a test application for the Ethernet MAC;
this can be used as a reference for creating custom designs. Another example Ethernet-based design
(the web server) can be found on the Digilent website.
ISE designs can use the IP Core Generator wizard to create a tri-mode Ethernet MAC controller IP
core.

USB Host

A Cypress CY7C67300 USB controller provides the Genesys board with USB host and peripheral
capability. The CY7C67300 includes two serial interface engines (SIE) that can be used
independently. SIE1 is connected to a Type A USB host connector (J8), and SIE2 is connected to a
Type B USB peripheral connector (J9).
The USB controller has an internal microprocessor to assist in processing USB commands; a
dedicated IIC EEPROM (IC9) is available for storing firmware. Firmware can be developed for the
processor and/or written to the EEPROM using the Cypress CY3663 EZ-OTG™/EZ-Host™
development kit available from Cypress.
To assist with debug, the USB controller's two-wire serial port is connected to two FPGA pins (USB-
RX to FPGA pin V9, USB-TX to FPGA pin W7) using LVCMOS33 I/O standards. Jumper JP14 can be
installed to prevent the USB controller from executing firmware stored in the IIC EEPROM.
To access the USB host controller, EDK designs can use the xps_epc IP core. Reference designs
posted on the Digilent website show an example for reading characters from a USB keyboard
connected to the USB host interface.
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