OXU121HP datasheet(2/22 Pages) OXFORD

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DS-0040 Aug 06

OXU121HP Data Sheet

Oxford Semiconductor, Inc.

Allows up to 8 bi‐directional endpoints and transfers for support

of multi‐function systems

Configurable hardware Host Negotiation Protocol (HNP) and

Session Request Protocol (SRP)

Transaction scheduling and transfer level protocol implemented

in hardware (including data toggle, retry and bandwidth

management) for high performance

Operating temperature range: ‐40 to 85 degrees C

Device

Overview

The Oxford Semiconductor OXU121HP (formerly TD1120) is a single‐

chip USB On‐The‐Go (OTG) controller that incorporates a full‐speed host

and a high‐speed peripheral controller. It enables an embedded system

to operate as a USB host and a peripheral simultaneously, thereby

dramatically expanding the degree of interconnectivity and extending

the applicability of USB into many new areas, especially in mobile

communication, consumer electronics, and printer applications. The

combination of the OXU121HP high‐speed peripheral and full‐speed

host controller enables users to perform high‐speed USB data transfer for

peripheral connectivity when connected to a host device, and operate at

full speed in host mode operation to maximize system battery life in a

mobile environment.

The OXU121HP is ideal for mobile applications. It enables high‐speed

PC synchronization to reduce data file transfer time when operating in

USB peripheral mode. In host mode, it enables the system to connect to a

wide range of USB devices such as flash drives, keyboards, mice, and

digital still cameras (DSC). These mobile applications include smart

phones, PDAs, MP3 players, portable media players, digital photo

albums, and GPS devices.

The OXU121HP is well suited for PictBridge printers. It enables high‐

speed data transfer between PC and printer. While utilizing the host

port, it adds PictBridge printing capability to the printer to support

direct photo printing from a DSC. The OXU121HP replaces existing two‐

chip solutions by combining discrete host and peripheral controllers into

a single chip, thus minimizing system cost, board space, design

complexity, and power consumption.

The OXU121HP allows for simultaneous host and peripheral operation.

The ports can be configured in one of two modes:

1 OTG + 1 Host: one OTG port and one full‐speed host port

1 Peripheral + 2 Host: one high‐speed peripheral port and two

full‐speed host ports

Software solutions for the OXU121HP include USB device drivers and

the Oxford Semiconductor USBLinkTM product suite. The USBLink host,

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