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CYUSB301X, CYUSB201X: EZ-USB® FX3: SuperSpeed USB Controller | Cypress Semiconductor

CYUSB301X, CYUSB201X: EZ-USB® FX3: SuperSpeed USB Controller

Last Updated: 
May 28, 2020

CYUSB301X, CYUSB201X: EZ-USB® FX3: SuperSpeed USB Controller


  • Universal serial bus (USB) integration
  • General Programmable Interface (GPIF™ II)
  • Fully accessible 32-bit CPU
  • Additional connectivity to the following peripherals
  • Selectable clock input frequencies
  • Ultra low-power in core power-down mode
  • Independent power domains for core and I/O
  • Package options
  • EZ-USB® Software Development Kit (SDK) for code development of firmware and PC Applications
  • SuperSpeed Explorer Board available for rapid prototyping
  • For more, see pdf.

Functional Overview
Cypress’s EZ-USB FX3 is a SuperSpeed peripheral controller, providing integrated and flexible features.
FX3 has a fully configurable, parallel, general programmable interface called GPIF II, which can connect to any processor, ASIC, or FPGA. GPIF II is an enhanced version of the GPIF in FX2LP, Cypress’s flagship USB 2.0 product. It provides easy and glueless connectivity to popular interfaces, such as asynchronous SRAM, asynchronous and synchronous address data multiplexed interfaces, and parallel ATA.

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

For the full version of this message, please download the PDF version.

Translated documents are for reference only. We recommend that you refer to the English-language version of a document if you are engaged in development of a design.