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Single-Chip Combination USB and Memory Host Controller

Oxford Semiconductor Inc. has announced the industry's first controller with full-speed host and high-speed peripheral USB connectivity combined with support for multiple storage interfaces. The OXU140CM, Oxford Semiconductor's new all-in-one connectivity solution is suited for consumer electronics devices that require high-performance connectivity for data transfer and access to expanded memory for additional storage.

The OXU140CM supports both USB and multiple storage interfaces including the new CE-ATA (Consumer Electronics-Advanced Technology Attachment) interface, which was designed specifically for small form factor disk drives targeted at handheld and consumer electronics applications. Offering the dual benefits of full-speed host and high-speed peripheral USB connectivity, the OXU140CM offers the performance and flexibility required by consumers to transfer photos, music and video at a higher speed and in a shorter time. Multiple storage interfaces allow the OXU140CM high-speed bridging to CE-ATA, MMC and SD memory for expanded storage capabilities.

The OXU140CM utilizes the proven design of Oxford's TD1120, the company's single-chip, high-speed peripheral and full-speed host USB controller, which was introduced in 2004. The high-speed USB connectivity in the OXU140CM enables a device to transfer data at high speeds when connected to a host (such as PC). The full-speed host capability enables a portable device to interface with a wide range of other USB applications such as mass storage devices (thumb drives, hard drives), digital-still-cameras and MP3 players. Oxford Semiconductor's forward-looking design supports MMC and SD memory as well as an interface to CE-ATA, a new standard in the early stages of adoption by manufacturers of consumer electronics products.

Features provided by the OXU140CM include:

-- Two-in-one USB connectivity - Full-speed host and high-speed peripheral provides cost, board space and power savings and minimizes system design by replacing two discrete USB controllers with one single chip.
-- CE-ATA/MMC/SD memory host controller - Supports multiple storage interfaces enabling expanded mass storage for portable applications.
-- High-speed data bridging - High-speed USB peripheral data transfer to CE-ATA/MMC/SD storage devices for fast synchronization between a PC and the portable device. Improves performance and lowers CPU utilization.
-- Low power design saves battery life - a key requirement for consumer electronics devices.
-- 128pin LQFP (14x14mm) and 100-ball BGA (8x8mm) - Two types of packaging offers cost and board space savings.



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