Linux usb 2 driver

Cypress Releases USB Host Controller Driver for Linux

Business Editors/High-Tech Writers

SAN JOSE, Calif.--(BUSINESS WIRE)--May 22, 2002

Enables Linux Host Stack to Provide Embedded USB Host Support for

Applications Such as Cell Phones, MP3 Players and PDAs; Leverages

Cypress's SL811HS USB Host/Peripheral Controller

Cypress Semiconductor Corporation (NYSE:CY) -- the leader in USB technology -- today announced the release of its Linux USB host driver supporting the SL811HS embedded host/peripheral controller. This driver will provide Linux developers the ability to add USB host functionality to a variety of embedded system applications, such as cell phones, MP3 players, network appliances and PDAs.

"Cypress continues to demonstrate its leadership in USB supporting emerging markets and platforms such as embedded Linux," said Jeff Chang, product marketing manager for Cypress's Personal Communications Division. "The release of this host controller driver will enable developers to add USB host functionality to their embedded system designs running Linux."

Currently, the Linux 2.44 kernel supports the Open Host Controller Interface (OHCI) and the Universal Host Controller Interface (UHCI) specifications for USB host controllers, which are typically implemented in a PC architecture and environment. Since Cypress's SL811HS is a memory-mapped device, the release of this new driver allows the Linux host stack to provide USB host support without realizing that there is a non-OHCI/UHCI type host controller. This driver enables engineers to bring their products to market more quickly.

About SL811HS

The SL811HS is Cypress's first-to-market USB embedded host controller, offering a dual-role port that can function as either a USB host or peripheral supporting both full- and low-speed USB devices.

Pricing and Availability

The Linux USB 2.0 driver and source code are available now. To download the source code, visit: http://www.cypress.com/press/linux.

About Cypress

Cypress Semiconductor is "Driving the Communications Revolution"(TM) with high-performance integrated circuits for network infrastructure and access equipment. Leveraging its process and system-level expertise, the company designs and manufactures solutions targeted across wireless and wireline communications. Cypress supports a wide range of industry standards, such as SONET (OC-48, OC-192 and OC-768), Voice over Internet Protocol (VoIP), InfiniBand(TM) and Gigabit Ethernet. The company's communications product lines include programmable high-speed physical layer devices (PHYs), wirespeed network search engines (NSEs) and network coprocessors (NCPs), and datapath switching elements (DSEs). Cypress is also the industry's leader in communications timing solutions, networking-optimized communications memories and personal connectivity solutions, such as USB and Bluetooth.

Cypress is a leader in pure optical and optoelectronic technologies designed to push network transmissions to higher performance levels and to satisfy the increasing demand for network bandwidth. With a focus on emerging communications applications, Cypress aims to become the preferred silicon supplier for network infrastructure solutions and for every network data stream to pass through at least one Cypress IC.

Cypress employs 4,000 people worldwide. Its shares are listed on the New York Stock Exchange under the symbol CY. More information about Cypress is accessible on the Web at www.cypress.com.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements herein that are not historical facts are "forward-looking statements" involving risks and uncertainties, including but not limited to: the effect of global economic conditions, shifts in supply and demand, market acceptance, the impact of competitive products and pricing, product development, commercialization and technological difficulties, and capacity and supply constraints. Please refer to Cypress's Securities and Exchange Commission filings for a discussion of such risks.

Cypress is a registered trademark and "Driving the Communications Revolution" and cypress.com are trademarks of Cypress Semiconductor Corporation. All other trademarks are the property of their respective owners.