Analog Devices EE-288 USB OTG Interface for ADSP-BF533 Blackfin Processors Application Note

About this manual

This Engineer-to-Engineer Note (EE-288) details how to implement a glueless interface between an external USB On-The-Go (OTG) controller and the Analog Devices ADSP-BF533 Blackfin processor. The document focuses on using the ISP1362 from Philips as the OTG controller, which supports both host and device modes compliant with USB 2.0 specifications.

The note provides a schematic for connecting the ISP1362 to the ADSP-BF533 via Parallel I/O (PIO) mode, utilizing the processor's ability to access internal control registers and memory buffers. It also outlines the specific firmware requirements needed for both slave (peripheral) mode operations and host mode enumeration.

What's inside

• Introduction
• Device Selection
• USB OTG Interface
• Slave Mode Firmware
• Host Mode Firmware
• Schematics
• Conclusion
• References

Frequently asked questions

What processor does this interface connect to?

This note describes a glueless interface between a USB OTG controller and an ADSP-BF533 Blackfin processor.

What is the maximum data transfer speed supported by the host portion of the selected controller?

The host portion supports data transfer at full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s).

How many interrupt signals does the controller provide to the processor?

The ISP1362 provides two interrupt signals to the ADSP-BF533 processor.