The Genesys Logic GL852-QFP48 is a USB 2.0 Hub Controller IC, designed to provide multiple USB ports from a single USB connection. It is a highly integrated chip that complies with the USB 2.0 specification, offering high-speed data transfer rates and backward compatibility with USB 1.1 devices. The GL852-QFP48 is typically used in applications requiring expansion of USB connectivity, such as desktop computers, laptops, docking stations, and various embedded systems.

Applications

• USB Hubs: Forms the core of external USB hubs, providing multiple downstream USB ports.
• Docking Stations: Used in docking stations to expand the number of available USB ports for peripherals.
• Embedded Systems: Integrated into embedded systems requiring multiple USB connections, such as industrial control systems and point-of-sale (POS) terminals.
• Computer Peripherals: Found in devices like monitors and keyboards that incorporate integrated USB hubs.
• Automotive Applications: Used in car infotainment systems to provide USB connectivity for various devices.

Features

• USB 2.0 Compliant: Fully compliant with the USB 2.0 specification, supporting high-speed (480Mbps), full-speed (12Mbps), and low-speed (1.5Mbps) data transfer rates.
• Four Downstream Ports: Provides four downstream USB ports, allowing connection of multiple USB devices.
• Integrated USB Transceivers: Includes integrated USB transceivers for each port, simplifying circuit design and reducing component count.
• Over-Current Protection: Features over-current protection on each downstream port to prevent damage from excessive current draw.
• Individual Port Power Management: Supports individual port power management, allowing power to be selectively enabled or disabled for each port.

Benefits

• Expanded USB Connectivity: Enables connection of multiple USB devices from a single USB port.
• High-Speed Data Transfer: Supports high-speed data transfer rates for efficient data communication.
• Simplified Design: Reduces component count and simplifies circuit design due to its highly integrated nature.
• Enhanced Reliability: Provides over-current protection to prevent damage from faulty devices or excessive current draw.
• Power Efficiency: Supports individual port power management to reduce power consumption.

Additional Details

The GL852-QFP48 comes in a 48-pin QFP (Quad Flat Package). It typically requires a 5V power supply and operates over a commercial temperature range (e.g., 0°C to +70°C). It often includes internal pull-up and pull-down resistors to simplify external circuitry. The device can be configured via external pins to control various operating parameters. Detailed specifications, including the exact operating voltage range, power consumption, and pinout, are available in the manufacturer's datasheet. The inclusion of transaction translator (TT) is also a vital element to check if dealing with high and low speed devices connected together.