
EZ-USB FX2 USB to ATA Reference Design Operating Instructions
3
4. Attach the Development Board to the USB 2.0
host controller.
5. Verify that the Development Board has
enumerated successfully. To verify
enumeration, start the EZ-USB control panel and
press the “Get Dev” button to retrieve the Device
Descriptor.
6. Power up the IDE drive/ dev board combination.
7. Download firmware. Download the fx2_ata.hex
firmware using the “Download” button on the EZ-
USB Control Panel.
8. The device should re-enumerate as a mass
storage device. See the section on driver
installation for information on installing device
drivers.
You can also program the EEPROM on the 3681
board to work as a mass storage device without
downloading firmware:
1. Put the EEPROM switches in “EEPROM
enabled” and “Large”
2. Power up the 3681 board and connect it to the
PC.
3. Start the Cypress control panel (ezmr.exe).
4. Click the EEPROM button on the control panel
and download your .iic file.
5. Cycle power on the 3681 board. It should now
come up as a drive.