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OXU140CM Datasheet(PDF) 2 Page - Oxford Semiconductor |
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OXU140CM Datasheet(HTML) 2 Page - Oxford Semiconductor |
2 / 20 page 2 External--Free Release DS-0038 Jul 06 OXU140CM Data Sheet Oxford Semiconductor, Inc. 16 Kbytes of on‐chip SRAM, optimized buffer size for performance and cost USB peripheral allows up to 8 bi‐directional endpoints and transfers to enable support for multi‐function systems Host Negotiation Protocol and Session Request Protocol implemented in hardware Transaction scheduling and transfer level protocol implemented in hardware (including data toggle, retry, and bandwidth management) for high performance Device Overview The Oxford Semiconductor OXU140CM is a single‐chip USB On‐The‐Go (OTG) controller that incorporates a full‐speed host, a high‐speed peripheral controller, and a multi‐storage interface that supports the following technologies: Consumer electronics advanced technology attachment (CE‐ATA) HDDs MultiMediaCard (MMC) Secure Digital (SD) The high‐speed peripheral port offers high‐data‐rate transfers to and from host PCs. This is essential for devices such as smart phones, portable media players, car audio/navigation units, and personal storage devices, where media transfer times greatly impact the user experience. The full‐speed host port enables the connection of a wide range of devices, such as flash drives, keyboards, mice, and digital still cameras. The OXU140CM low‐power design is ideal for extending the battery life in mobile applications. The multi‐storage interface provides glueless support for CE‐ATA hard drives. This new class of drives is designed for lower pin count, better power utilization, and a more efficient command protocol than existing hard drives, making it ideal for portable applications. The interface also supports MMC and SD flash memory devices, providing additional product flexibility in memory capacity expansion. The OXU140CM implements fast bridging between the USB peripheral port and the multi‐storage interface, improving data transfer rates and minimizing CPU utilization. The OXU140CM allows for simultaneous host and peripheral operation. The ports can be configured in one of two modes: One OTG port and one full‐speed host port One high‐speed peripheral port and two full‐speed host ports The multi‐storage interface can be used in conjunction with either mode. |
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