PDIUSBH12 Datasheet | NXP Semiconductors

INTEGRATED CIRCUITS PDIUSBH12 USB 2-port hub Product specification Supersedes data of 1999 Feb 25 1999 Jul 22 Philips Semiconductors Philips Semiconductors Product specification USB 2-port hub Features - plies with the Universal Serial Bus specification Rev. 1.0 - plies with the ACPI, On NOW, and USB power management requirements DESCRIPTION The Universal Serial Bus Hub PDIUSBH12 is a cost and feature optimized second generation USB Hub with 2 downstream ports and 3 embedded functions (pound hub). It is normally used in any microcontroller-based system and municates with the system microcontroller over the high speed I2C serial bus. This modular approach to implementing a hub and embedded functions allows the designer to choose the optimum system microcontroller from the available wide variety. This flexibility cuts down the development time, risks and costs by allowing the use of the existing architecture and the firmware investments. This results in the fastest way to develop the most cost-effective USB peripheral solutions that need hub functionality. The PDIUSBH12 is ideally suited for puter monitors, docking stations, keyboards and many other applications that use the I2C or the SMBus based architecture. The PDIUSBH12 conforms to the USB specification Rev 1.0, I2C serial interface and the SMBus specifications. It is fully pliant with the Human Interface Device Class and Monitor Control Class specifications. Its low suspend power consumption along with the programmable Lazy Clock output allows for easy implementation of equipment that is pliant to the ACPI, On Now and USB power management requirements. The low operating power allows the implementation of the bus powered or the pound powered hub function. The PDIUSBH12 is fully backward patible to the first generation PDIUSBH11 hardware and software. This allows an easy running change in the manufacturing line to realize the cost savings. In addition, it also...