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 USBLink
TM
product suite. The USBLink host,
2
External--Free Release
DS-0040 Aug 06
OXFORD [ OXFORD SEMICONDUCTOR ]
