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EZ-USB® FX3 Technical Reference Manual | Cypress Semiconductor

EZ-USB® FX3 Technical Reference Manual

Last Updated: 
May 28, 2020

EZ-USB® FX3™ is Cypress's high-bandwidth USB 3.0 peripheral controller that provides integrated and flexible features. FX3 integrates the USB 3.0 and USB 2.0 physical layers (PHYs) along with a 32-bit ARM926EJ-S microprocessor for powerful data processing and for building custom USB SuperSpeed applications.

To provide high-bandwidth access to USB 3.0 data, FX3 contains a hardware unit called General Programmable Interface, Generation 2 (GPIF II). GPIF II is an enhanced version of the GPIF in FX2LP™, Cypress's USB 2.0 product. GPIF II provides easy and glueless connectivity to popular interfaces such as asynchronous SRAM and asynchronous and synchronous address and data multiplexed interfaces. FX3 implements a DMA-centric architecture that enables direct 375-MBps data transfer from GPIF II to the USB interface without CPU intervention.