Application Note
4 of 42
001-65209 Rev.*I
2021-03-19
Getting Started with FX2LP™
USB 2.0
2
USB 2.0
USB standardizes the connection of computer peripherals, such as keyboards, mice, printers, thumb drives,
hard disks, and portable media players. USB provides communication and power to peripheral devices. USB
has become the dominant connectivity solution for PCs and consumer devices. Its popularity is largely due to
its ease of use, achieved by its standardized and robust underlying structure.
The USB 1.0 specification, released in 1996, defined two transfer speeds to address common device types of the
time. Low-speed devices operate at 1.5 Mbps to support devices such as keyboards and joysticks. Full-speed
devices operate at 12 Mbps to support higher bandwidth devices, such as printers and disk drives. A minor
specification revision 1.1, released in 1998, mostly addressed hub issues and became the widely adopted first-
generation specification.
The USB 2.0 specification was released in 2000. It increased the signaling rate to 480 Mbps, naming it Hi-Speed.
The 2.0 specification is compatible with the previous transfer rates.
The USB 3.0 specification, released in 2008, further increased the signaling rate to 5 Gbps, calling it
SuperSpeed. The Cypress FX3 family supports this speed.
The subject of this application note is the Cypress FX2LP, which operates at Hi-Speed and Full-speed.
lists other Hi-Speed devices available from Cypress. All USB controllers from Cypress are listed
. For
more details of USB 2.0, refer to
USB 101: An Introduction to Universal Serial Bus 2.0
