DESCRIPTION
The Universal Serial Bus hub PDIUSBD11 is a cost and feature-optimized USB interface device. It is used in microcontroller-based systems and communicates with the system microcontroller over the high speed I2C serial bus. This modular approach to implementing USB 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. The PDIUSBD11 is ideally suited for computer monitors, docking stations, keyboards, and many other applications that use the I2C or the SMBus-based architecture.

FEATURES
• Complies with the Universal Serial Bus specification Rev. 1.1
• Complies with the ACPI, OnNOW, and USB power management requirements
• Compliant with USB Human Interface Devices and Monitor Control Class
• Compliant with System Management Bus Specification Rev. 1.0
• Integrated SIE (Serial Interface Engine), FIFO memory and transceivers
• Automatic USB protocol handling
• High speed I2C Interface (up to 1 Mbit/s)
• Compatible with the PDIUSBH11 software
• Software controllable connection to USB bus (SoftConnect)
• Low frequency 12 MHz crystal oscillator eases EMI design issues
• Programmable output clock frequency
• Bus powered capability with very low suspend current
• Controllable LazyClock output during suspend
• Single 3.3 V supply with 5 V tolerant I/O
• Available in 16-pin DIP and SO packages
• Full-scan design with high fault coverage (>99%) insures high quality
• Higher than 8 kV in-circuit ESD protection lowers cost of extra components