Description
The AT43311 is a fully compliant USB hub chip with 5 ports, one upstream port and four full/low-speed downstream ports. The AT43311 can be used as a stand alone or can provide a simple and quick method of adding USB ports to an existing device.

Features
• Self-Powered Hub with Bus Power Controller
• Full Compliance with USB Spec Rev 1.0
• Full Speed USB Host Interface
• Four Downstream Ports
• Downstream Support for Full Speed and Low Speed Transfer Rates
• Continual Monitoring of Port by System Host
• Individual Port Power Control
• USB Connection Status Indicators
• 6 MHz Oscillator with On-Chip PLL