Features

• 3.3 Volt Operation
• X-Bus Interface
  • LPC Memory Cycle and Firmware Hub Cycle Access
  • Supports a Single ROM Device up to 16MBytes
• Auto Fan Support
  • LPC Interface and SMBus Backdoor Access to all Registers (Hardware Arbitration)
  • SMSC SensorBus Interface to Sensors
  • Supports up to three T03 sensor devices, up to nine sensors. Each individual sensor may be assigned to any one (or more) of the three autofan control zones.
  • 3 PWM Output Pins
  • 8 Tachometer Inputs
• Real Time Clock
  • Can be disabled (VBAT Bit)
  • LPC Interface and SMBus Backdoor Access to all Registers (Hardware Arbitration)
• Power Button Control Logic
• LED Support
  • Software Control, 1Hz and 4Hz Blink Options (VBAT Bit)
• Input Pin to Tristate UART Pins
• LPC Interface
  • Serial IRQ Pin
• SMBus Slave Interface Backdoor to HWM Registers
  • Default I2C address 5Ch with programmable I2C address
• SMBus Slave Interface Backdoor to RTC Registers
  • Default I2C address 6Ch with programmable I2C address
• Floppy Disk Controller
• Multi-Mode Parallel Port
• Two Full UARTs
• 8042 Keyboard Controller
• Programmable Wakeup Event Interface (nIO_PME Pin)
• nIO_SMI Pin
• GPIO Pins (51)
• Watchdog Timer
• Security Register
• ACPI Support Register for Monitoring System Sleep State and SMI Generation
• Low Battery Warning
• XNOR Chain
• PC2001 Compliant
• ACPI 2.0 Compliant
• 128-pin QFP Package; Lead-Free RoHS Compliant Package also available.