Cypress EZ-USB FX3 CYUSB3KIT-001

Questions and Answers

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Eric PetersonAug 5, 2025
How to fix the issue when I cannot install cyusb3.sys driver for Cypress Microcontrollers?
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  William VelezAug 5, 2025
  If you're having trouble installing the cyusb3.sys driver for your Cypress FX3 Microcontroller, there are a couple of potential reasons: * Older FX3 SDK versions (prior to 1.1.1) contain unsigned USB drivers. To use these, reboot your PC, press F8 during startup, and select 'Disable Driver Signature enforcement'. * Ensure you are using the correct SuiteUSB installer for your operating system. Use CyUSB3_x86_.msi for 32-bit Windows XP/Vista/7 and CyUSB3_x64__..msi for 64-bit OS platforms. You may need to perform manual driver re-binding as described in section 3.4.1 using the Windows Hardware Wizard.
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Austin WarrenAug 13, 2025
Why is my Cypress FX3 Microcontroller DVK board not enumerating when connected to the PC host?
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  Patricia StevensAug 13, 2025
  If your Cypress FX3 Microcontroller DVK board isn't recognized when connected to your computer, it could be due to several reasons: * The board might have been powered on before being connected to the PC. If this is the case, try pressing the reset button. * For self-powered boards, check the jumper settings as detailed in the "Self-Power Mode" section. * Ensure that pins 1–3 or 2–4 of jumper J53 are shorted to enable bus-power mode. * Verify the USB cable is correctly connected and consider using the cable provided with the kit or a USB-IF certified cable. * Sometimes, Windows OS may not visually indicate the enumeration. Check the Device Manager for the FX3 device entry as shown in Figures 3-4 and 3-5.
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Hailey BrooksAug 20, 2025
What to do if Cypress Microcontrollers FX3 DVK board does not power on when power supply is connected?
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  Miguel JamesAug 20, 2025
  If your Cypress FX3 Microcontroller DVK board fails to power on when connected to a power supply, consider the following: * Ensure that switch SW9 is set to the “VP50” (down) position and not the “VBUS_IN” (up) position. * Make sure the power plug is firmly inserted into the J49 power jack. * If the problem persists, the power supply unit might be faulty. Try testing the DVK board with another power supply unit that has the same current/voltage ratings. * If the FX3 DVK board still does not power up after replacing the power adapter, the board itself may be faulty. Contact Cypress support for assistance.
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rjohnsonAug 28, 2025
Why Cypress Microcontrollers FX3 DVK board does not power on when USB cable is connected?
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  jameschristopherAug 28, 2025
  If your Cypress FX3 Microcontroller DVK board doesn't power on when a USB cable is connected, there are a couple of things to check: * Make sure that switch SW9 is in the “VBUS_IN” (up) position. * Verify that pins 1–2 of jumper J53 are shorted.

Summary

Introduction

Kit Contents

Lists the components included in the EZ-USB FX3 DVK hardware kit.

FX3 Software

Details the FX3 DVK Installer and FX3 SDK Installer software.

Tools Not Included

Lists essential software and hardware not provided in the kit.

Other Suggested Tools

Additional Learning Resources

Document History

Documentation Conventions

Abbreviations

Getting Started

FX3 DVK Software Installation

Guides users through the installation process for the FX3 DVK software.

FX3 DVK Software Installation

Details the installation wizard and product installation overview.

FX3 DVK Software Installation

Explains the installation progress and configuration of software modules.

FX3 DVK Software Installation

Covers using the Cypress Update Manager and installation directories.

FX3 SDK Installation

Rolling Back to a Previous Version of FX3 SDK

FX3 SDK Installation on Linux OS

Eclipse IDE Quick Tour

Start Eclipse

Import a Project

Tweak Eclipse IDE Settings

Example 1: Blinking LED and Push Button

FX3 Firmware Download and Debug Methods

Run Code

Provides steps to download and run firmware directly over USB.

Run Code

Details using the Cypress USB Control Center for firmware download.

Run Code with Serial Debug

Download and Debug over JTAG

Code Structure

Importing All Cypress Examples

Kit Operation

Default Jumper Settings on DVK Board

Details the factory default jumper and dip switch configurations for the DVK.

Bus-Power Mode

Self-Power Mode

First Time USB Enumeration

Manual Installation of Cypress Driver

Boot Options

USB Boot

Download Firmware Image to FX3 RAM

I2 C Boot

Download Firmware Image to I2 C EEPROM

Booting from I2 C EEPROM

Choosing the Correct I2 C EEPROM Configuration

SPI Boot

Download Firmware Image to SPI Flash

Booting from SPI Flash

ADMUX Boot

USB 3.0 Enumeration

Example 2: Loopback of Data over Bulk Endpoints

Modify the Bulkloop Firmware Example

Example 3: Measurement of Throughput Using USB 3.0 Bulk Transfers

Hardware

Power Supply

Describes the two methods for powering the FX3 DVK board.

Power Supply

Lists voltage levels for different power domains and associated jumpers.

USB Receptacle

Details the USB 3.0 Micro-B receptacle and its pin assignments.

USB Receptacle

Clocking Mechanism for FX3

GPIF II Connector

Interconnecting to the GPIF II Connector

FX3 DVK Interconnect Boards

Reset Circuit

Serial Interfaces

I2 C Interface

I2 S

SPI and UART

JTAG

Appendix - Troubleshooting

Self-Power Mode

Lists common problems and solutions for FX3 DVK self-power mode.

Bus-Power Mode

Lists common problems and solutions for FX3 DVK bus-power mode.

USB 2.0 Enumeration

USB Driver Installation

USB Boot

I2 C Boot

SPI Boot

USB3.0 Enumeration

Appendix - PCB Layout

Assembly Top

Shows the layout and placement of components on the top side of the PCB.

Assembly Bottom

Cypress EZ-USB FX3 CYUSB3KIT-001 Specifications

General

Device Name	Cypress EZ-USB FX3 CYUSB3KIT-001
Category	Microcontrollers
Kit Type	Development Kit
Microcontroller Type	EZ-USB FX3
Core Architecture	ARM
Silicon Core Number	FX3
Core Size	32-bit
Connectivity	USB 3.0
USB Interface	USB 3.0
Program Memory Size	512 KB
Program Memory Type	Flash
RAM Size	256 KB
Operating Temperature	-40°C ~ 85°C
Peripherals	I2C, SPI, UART
Operating Supply Voltage	3.3V
Voltage - Supply (Vcc/Vdd)	3.3V