The Genesys Logic GL850S is a USB 2.0 hub controller that provides a simple and efficient way to add multiple USB ports to a system. It is designed to meet the USB 2.0 specifications, supporting high-speed (480Mbps), full-speed (12Mbps), and low-speed (1.5Mbps) data transfer rates. This chip is a single-chip solution, integrating the USB 2.0 transceiver, hub controller logic, and downstream port termination resistors.

Applications

• USB Hubs: Used to create 4-port USB 2.0 hubs for expanding USB connectivity.
• Docking Stations: Integrated into docking stations for laptops and other devices.
• Embedded Systems: Suitable for embedded applications needing additional USB ports.
• Monitor Hubs: Incorporated into monitors with integrated USB hubs.
• PC Peripherals: Found in various PC peripherals requiring expanded USB functionality.

Features

• USB 2.0 Compliant: Fully compliant with the USB 2.0 specification.
• Four Downstream Ports: Provides four downstream USB ports for connecting devices.
• Integrated USB Transceiver: Includes an integrated USB 2.0 transceiver.
• Individual Port Power Management: Supports individual power control for each downstream port.
• Over-Current Protection: Features over-current protection to protect the hub and connected devices from damage.
• Bus-Powered and Self-Powered Modes: Operates in both bus-powered (powered by the USB host) and self-powered (powered by an external power supply) modes.
• EEPROM Interface: Includes an EEPROM interface for customization and configuration settings.
• Small Package: Available in compact packages, such as QFN, for space-constrained applications.

Benefits

• Expanded USB Connectivity: Allows users to connect more USB devices to their systems.
• Cost-Effective Solution: Provides a low-cost way to implement USB hub functionality.
• Easy Integration: The integrated design simplifies integration into various systems.
• Reliable Performance: Ensures reliable USB communication with integrated protection features.
• Flexible Power Options: Offers both bus-powered and self-powered operation modes.

Additional Details

The GL850S requires minimal external components, streamlining the design process. Configuration settings, such as vendor and product IDs, can be stored in an external EEPROM. The device includes power management features to reduce power consumption when USB ports are not in use. Its robust design and compliance with USB 2.0 standards make it a popular choice for a wide range of USB hub applications.