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EZ-USB SX3™ SuperSpeed USB 3.1 Gen1 Peripheral Controller | Cypress Semiconductor

EZ-USB SX3™ SuperSpeed USB 3.1 Gen1 Peripheral Controller

EZ-USB™ SX3 is a FIFO to SuperSpeed USB 3.1 Gen1 bridge that enables developers to add 5-Gbps USB device functionality to any FPGA-based system.

EZ-USB SX3 provides a configurable FIFO interface capable of 3.2 Gbps data bandwidth, and it’s ideally suited for USB Video Class (UVC), USB Audio Class (UAC) and general-purpose data acquisition applications.

SX3 solves these problems

  • SX3 provides 5-Gbps bandwidth – 10x the bandwidth of USB 2.0
  • SX3 is a one-chip solution with integrated PHY and proven USB intellectual property (IP), like its predecessors FX3 and CX3
  • SX3 enables simple configuration of the FIFO interface, USB Video Class (UVC) and USB Audio Class (UAC) endpoints without the need for FW development
  • SX3 shares the same market-proven USB stack with FX3 and CX3, ensuring USB spec compliance and Interoperability
EZ-USB SX3 Block Diagram
  1. Download EZ-USB SX3 datasheet
  2. Download AN231295 - Getting Started with EZ-USB SX3
  3. Download and install EZ-USB SX3 Configuration Utility
  4. Buy HDMI to USB video capturing reference design kits
  5. Watch the reference design kit demo video
  6. Get your Schematics reviewed by the Infineon Applications Engineering Team using the Online Tech Support Case System



The Infineon EZ-USB SX3 Reference Design Kit is a brand new, low-cost platform to quickly enable customers to implement a HDMI to USB3 frame grabber. Use this kit with the EZ-USB configuration utility to setup the desirable UVC/UAC parameters.

  • Video capturing devices, HDMI frame grabbers
  • Video conferencing cameras
  • Document and fingerprint scanners
  • Logic analyzers, digital scopes, test and measurement systems
  • General-purpose image or data acquisition systems

SX3 Application Example HDMI video frame grabber

SX3 Application Example USB 3.2 Gen 1 camera

SX3 Application Example General purpose data acquisition

Key Features

  • USB 3.1 Gen 1 compliant (5 Gbps) peripheral controller
  • USB-IF certified
  • 200-MHz Arm926EJ core
  • 512KB of embedded SRAM
  • 32-bit, 100-MHz, FIFO in slave mode
  • I2C, SPI and GPIOs
  • Pre-configured to support UVC and UAC device class
  • Interface directly with Image sensor or ISP/FPGA through slave FIFO Interface
  • Supports up to 2 Slave FIFO Channels, max throughput up to 400MB/s, 4K UHD, 30fps
  • Supports up to 2 configurable endpoints and USB debug support (CDC Class)
  • I2C Master interface to support FPGA and Image sensor configuration
  • FPGA/ISP firmware storage along with FX3 firmware in one external SPI Flash
  • Configurable through GUI-based configuration utility
  • Supports Windows, MacOS and Linux
  • Package: 121-ball BGA (10 x 10 mm)
EZ-USB SX3 Configuration

Helps you configure and program your EZ-USB SX3 device