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
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