The Nuvoton W83627DHG-B is a Super I/O controller primarily utilized in desktop motherboards. It provides a comprehensive interface for legacy peripherals and essential system monitoring functions. This chip integrates multiple functionalities, simplifying motherboard design and reducing the overall system cost. The DHG-B variant is a specific revision or configuration within the W83627DHG series.

Applications

• Desktop PCs
• Industrial PCs
• Embedded Systems
• Motherboard Integration

Features

• Floppy Disk Controller (FDC): Supports standard floppy disk drives.
• Parallel Port (LPT): Offers a bidirectional parallel port supporting EPP/ECP modes.
• Serial Ports (UARTs): Provides multiple UARTs with enhanced features like FIFO buffers and selectable IRQ.
• Infrared (IrDA) Support: Enables wireless communication via infrared with various protocols.
• Keyboard Controller: Manages keyboard input and supports various keyboard features.
• Mouse Interface: Supports PS/2 mouse devices with advanced functionalities.
• Hardware Monitoring: Monitors system voltages, temperatures (CPU, system), and fan speeds with alert capabilities.
• GPIO (General Purpose Input/Output) Pins: Offers programmable I/O pins for custom applications and peripheral control.
• ACPI Support: Compliant with Advanced Configuration and Power Interface (ACPI) standards for power management.

Benefits

• Simplified Motherboard Design: Integrates multiple functions, reducing component count and board complexity.
• Reduced System Cost: Combines several controllers into one chip, lowering the bill of materials.
• Improved System Reliability: Integrated design reduces potential failure points compared to discrete components.
• Enhanced System Monitoring: Provides comprehensive hardware monitoring, enabling proactive system management and preventing overheating.
• Legacy Device Support: Ensures compatibility with older peripherals like floppy drives and serial devices.
• Power Management: ACPI support allows for efficient power consumption and system wake-up capabilities.

Additional Details

The W83627DHG-B communicates with the system chipset via the LPC (Low Pin Count) bus. It includes advanced hardware monitoring capabilities with programmable alert thresholds. The parallel port supports various modes, including EPP (Enhanced Parallel Port) and ECP (Extended Capabilities Port), for faster data transfer. The UARTs include FIFO buffers to improve data throughput and reduce CPU overhead. Its integrated keyboard and mouse controller handles standard PS/2 input devices. This IC typically comes in a PQFP (Plastic Quad Flat Package) or LQFP (Low Profile Quad Flat Package).