Nohau UK - Embedded Hardware, Tools and Software

USB Host Stack

Features

HCC's EUSBH (Embedded USB Host Stack) is a full-featured host stack designed for embedded applications. Its key features are:

Compliance with USB 1.1 and 2.0
Control, bulk, interrupt and isochronous transfers
Low-speed 1.5 Mb/s, full-speed 12Mb/s and high-speed 480 Mb/s
Support for OHCI, EHCI and non-standard host controllers
Contains integrated root hub and port manager
Range of class drivers
Small footprint (<16K) and data requirement (<10K)
Designed for any RTOS
The system structure is shown below:

. USB Host stack

Host Compatibility

Non-Standard Hosts

There are many USB host controllers avaialble for embedded targets which do not conform to any standard. HCC have ported their USB HostLite software for the following devices:

ISP1161
ISP1362
MAX3421E
MCF5222x

OHCI

An OHCI implementation (tested on SAM9 and other controllers) is available for all HCC host drivers.

EHCI

An EHCI implementation (verfied on MCF5329) is available for all HCC host drivers.