The IT8772E/FXS is a Super I/O controller manufactured by ITE Tech. It is an LPC (Low Pin Count) interface chip commonly used on desktop motherboards. Its main functions include hardware monitoring, fan control, and providing legacy I/O support. It monitors voltages, temperatures, and fan speeds to ensure the system operates within safe parameters. The "/FXS" suffix denotes a specific revision or feature set within the IT8772E family.

Applications

• Desktop Motherboards: Main Super I/O for hardware monitoring, fan control, and legacy I/O support.
• Embedded Systems: Used in embedded systems requiring hardware monitoring and control capabilities.
• Industrial PCs: Integrated into industrial PCs for system management and control.

Features

• Hardware Monitoring: Monitors voltages, temperatures (CPU, system), and fan speeds.
• Smart Fan Control: Dynamic fan speed control through PWM outputs based on temperature readings.
• LPC Interface: Low Pin Count interface for communication with the system chipset.
• Serial Ports: Supports multiple UART serial ports for connecting legacy devices.
• Parallel Port: Provides a parallel port for older printers and devices.
• GPIO: General Purpose Input/Output pins for custom system functions.

Benefits

• Improved System Reliability: Proactive monitoring of critical system parameters to prevent overheating and component failure.
• Optimized Cooling Performance: Intelligent fan control balances cooling efficiency with noise reduction.
• Energy Savings: Reduced power consumption through optimized fan speed control.
• Simplified System Management: Integrated solution for multiple I/O and monitoring requirements.
• Legacy Device Compatibility: Support for older serial and parallel peripherals.

Additional Details

The IT8772E/FXS communicates with the chipset over the LPC bus. It necessitates appropriate driver support under the operating system. Actual sensors and voltage rails being monitored will vary based on the motherboard design. The datasheet for the IT8772E/FXS and the motherboard manual contain detailed information on specific implementations, pin assignments, and configuration options. The meaning of the "/FXS" designation can only be precisely determined by consulting the datasheet.