FX3 Programmers Manual, Doc. # 001-64707 Rev. *C 9
1. Introduction
Cypress EZ-USB
®
FX3™ is the next-generation USB 3.0 peripheral controller providing highly
integrated and flexible features that enable developers to add USB 3.0 functionality to any system.
Figure 1-1. EZ USB FX3 System Diagram
EZ-USB FX3 has a fully configurable, parallel, general programmable interface called GPIF™ II,
which can connect to any processor, ASIC, DSP, image sensor, or FPGA. It has an integrated PHY
and controller along with a 32-bit microcontroller (ARM926EJ-S) for powerful data processing and
for building custom applications. It has an interport DMA architecture that enables data transfers of
greater than 400 Mbps.
The FX3 is a fully compliant USB 3.0 and USB 2.0 peripheral. An integrated USB 2.0 OTG controller
enables applications that need dual role usage scenarios. It has 512 KB of on-chip SRAM for code
and data. It supports serial peripherals such as UART, SPI, I
2
C, and I2S that enable communicating
to on board peripherals; for example, the I
2
C interface is typically connected to an EEPROM.
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 industry interfaces such as asynchronous and
synchronous Slave FIFO, asynchronous SRAM, asynchronous and synchronous Address Data
Multiplexed interface, parallel ATA, and so on. The GPIF II controller on the FX3 device supports a
total of 256 states. It can be used to implement multiple disjointed state machines.
The FX3 comes with the easy-to-use EZ-USB tools providing a complete solution for fast application
development. The software development kit includes application examples to accelerate time to
market.
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