The GL852G-OHY50 is a USB 2.0 Hub Controller manufactured by Genesys Logic. It's a highly integrated chip designed to provide a cost-effective and efficient solution for expanding the number of USB ports available in a system. This hub controller is typically used in PCs, laptops, docking stations, and other devices that require multiple USB connections.

Applications

• PC and Laptop Expansion: Adding more USB ports to desktops and laptops.
• Docking Stations: Providing USB connectivity in docking stations for laptops and mobile devices.
• USB Hubs: Creating standalone USB hubs for various applications.
• Embedded Systems: Integrating USB connectivity into embedded systems and industrial devices.
• Consumer Electronics: Used in TVs, set-top boxes, and other consumer electronics devices requiring multiple USB ports.

Features

• USB 2.0 Compliant: Supports data transfer rates up to 480Mbps (High-Speed), 12Mbps (Full-Speed), and 1.5Mbps (Low-Speed).
• Four Downstream Ports: Provides four downstream USB ports for connecting peripherals.
• Integrated USB Transceivers: Includes built-in USB transceivers, reducing external component count.
• Individual Port Power Management: Allows for individual power control of each downstream port.
• Over-Current Protection: Includes over-current detection and protection for each port to prevent damage to the hub and connected devices.

Benefits

• Cost-Effective Solution: Provides a low-cost way to add multiple USB ports to a system.
• Simplified Design: The integrated design reduces the need for external components, simplifying the design process.
• Improved Performance: Compliant with USB 2.0 specifications, ensuring high-speed data transfer.
• Enhanced Reliability: Over-current protection and other safety features enhance the reliability of the hub.
• Easy Integration: The compact package and standard interface simplify integration into various systems.

Additional Details

The GL852G-OHY50 typically requires minimal external components for operation, further reducing BOM costs. It supports both bus-powered and self-powered modes of operation. In bus-powered mode, the hub draws power directly from the USB port of the host device. In self-powered mode, the hub uses an external power supply. It is also compatible with various operating systems, including Windows, macOS, and Linux. The chip incorporates a built-in microcontroller to handle USB protocol and power management functions. Proper PCB layout and grounding are crucial for optimal performance and to minimize EMI. The datasheet provides detailed information on pin assignments, electrical characteristics, and application examples.