The GL887 is a USB 3.0 Hub Controller IC manufactured by Genesys Logic. It is designed to expand a single USB 3.0 port into multiple ports, providing a convenient way to connect multiple USB devices to a computer or other host system. This chip supports SuperSpeed USB data transfer rates, significantly improving data transfer speeds compared to USB 2.0.

Applications

• USB 3.0 Hubs: Used in standalone USB 3.0 hubs for expanding USB connectivity.
• Docking Stations: Implemented in docking stations to provide multiple USB 3.0 ports for peripherals.
• Embedded Systems: Integrated into embedded systems requiring multiple USB 3.0 connections.
• Laptop and Desktop Expansion: Adds USB 3.0 ports to laptops and desktops.
• Industrial Applications: Used in industrial environments requiring high-speed USB connections.

Features

• USB 3.0 Compliant: Supports SuperSpeed USB data transfer rates up to 5Gbps.
• Multiple Downstream Ports: Typically supports 4 downstream USB 3.0 ports.
• Integrated USB Transceivers: Includes integrated USB transceivers for reduced component count.
• Individual Port Power Control: Allows individual power management of each downstream port.
• Over-Current Protection: Provides over-current detection and protection for each port.

Benefits

• High-Speed Data Transfer: Enables significantly faster data transfer speeds compared to USB 2.0.
• Increased Connectivity: Provides multiple USB 3.0 ports for connecting various peripherals.
• Simplified Design: Integrated transceivers and power management simplify the design process.
• Enhanced Reliability: Over-current protection and other safety features ensure reliable operation.
• Improved User Experience: Faster data transfer speeds improve the overall user experience.

Additional Details

The GL887 requires external components such as crystal oscillators and passive components for proper operation. It typically supports both bus-powered and self-powered modes. The power consumption and thermal management are critical considerations when designing with the GL887, especially in high-density applications. The chip's datasheet provides detailed information on electrical characteristics, pin configurations, and application examples. Signal integrity analysis is crucial for ensuring optimal performance at SuperSpeed USB data rates. Proper grounding and PCB layout techniques are necessary to minimize EMI and ensure signal quality. The GL887 is designed to be compatible with various operating systems, including Windows, macOS, and Linux.