PDIUSBH11

INTEGRATED CIRCUITS PDIUSBH11 Universal Serial Bus Hub Product specification Supersedes data of 1997 Apr 17 1997 Aug 01 Philips Semiconductors Philips Semiconductors Product specification Universal Serial Bus Hub PDIUSBH11 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 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. The PDIUSBH11 conforms to the USB specification 1.0 and I2C serial interface specification. It is also compliant with the USB Human Input Device and Monitor Control Class specifications. The embedded function of the PDIUSBH11 appears as PORT1 to the host system and the four downstream p...