DESCRIPTION
The Philips Semiconductors PDIUSBH11 is a compound USB hub IC (hub plus embedded function).
It is used in a microcontroller based system and communicates with the system microcontroller over the I2C serial bus. This modular approach to implementing a hub and embedded function allows the designer to maintain the system microcontroller of choice and retain existing architecture. This cuts down development time and offers the most cost-effective solution.
Ideal applications for the IC include computer monitors and keyboards.

FEATURES
• Complies with the Universal Serial Bus specification Rev. 1.0
• Four downstream ports with per packet connectivity
• Embedded function with two endpoints (control and interrupt)
• Integrated FIFO memory for hub and embedded function
• Automatic protocol handling
• Versatile I2C interface
• Allows software control of monitor
• Compliant with USB Human Interface and Display Device Class
• Single 3.3V supply with 5V tolerant I/O