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 PLLPinout
SpecificationsOperating Temperature ...................-55°C to +125°C
Storage Temperature ......................-65°C to +150°C
Voltage on any pin with
Respect to Ground ................................ -0.5V to 7.0V
Maximum Operating Voltage ...............................6.6V
DC Output Current ...........................................16 mA
*NOTICE: Stresses beyond those listed below may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe 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.
As a repeater, the AT43311 provides upstream connectivity between the selected function and the host. Connectivity involves setting up and tearing down connections, handling bus faults, recovering from bus faults and detecting downstream device connections and disconnections.
The AT43311 may also act as a hub controller managing the hub operations and recording the status of the hub, bus transactions, and downstream ports. In this mode, the AT43311 tracks and generates the bus enumeration, provides configuration information to the host, provides individual port status to the host, and controls the port operation based on host commands.
AT43311 Data Sheet
