Features

• General Features
  • 3.3 Volt Operation (SIO Block is 5 Volt Tolerant)
  • LPC Interface
  • Programmable Wake-Up Event Interface
  • PC99, PC2001 Compliant
  • ACPI 2.0 Compliant
  • Multiplexed Command, Address and Data Bus
  • Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems
  • PME Interface
  • ISA Plug-and-Play Compatible Register Set
  • 25 General Purpose Input/Output Pins
  • System Management Interrupt
• AC Power Failure Recovery
• Watchdog Timer
• 2.88MB Super I/O Floppy Disk Controller
  • Licensed CMOS 765B Floppy Disk Controller
  • Software and Register Compatible with SMSC's Proprietary 82077AA Compatible Core
  • Supports One Floppy Drive
  • Configurable Open Drain/Push-Pull Output Drivers
  • Supports Vertical Recording Format
  • 16-Byte Data FIFO
  • 100% IBM Compatibility
  • Detects All Overrun and Underrun Conditions
  • Sophisticated Power Control Circuitry (PCC) Including Multiple Powerdown Modes for Reduced Power Consumption
  • DMA Enable Logic
  • Data Rate and Drive Control Registers
  • 480 Address, Up to Eight IRQ and Three DMA Options
  • Support 3 Mode FDD
• Enhanced Digital Data Separator
  • 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data Rates
  • Programmable Precompensation Modes
• Serial Ports
  • Two Full Function Serial Ports
  • High Speed NS16C550A Compatible UARTs with Send/Receive 16-Byte FIFOs
  • Supports 230k and 460k Baud
  • Programmable Baud Rate Generator
  • Modem Control Circuitry
  • 480 Address and 15 IRQ Options
• Infrared Port
  • Multiprotocol Infrared Interface
  • IrDA 1.0 Compliant
  • SHARP ASK IR
  • 480 Address, Up to 15 IRQ
• Multi-Mode™ Parallel Port with ChiProtect™
  • Standard Mode IBM PC/XT, PC/AT, and PS/2 Compatible Bidirectional Parallel Port
  • Enhanced Parallel Port (EPP) Compatible - EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant)
  • IEEE 1284 Compliant Enhanced Capabilities Port (ECP)
  • ChiProtect Circuitry for Protection
  • 960 Address, Up to 15 IRQ and Three DMA Options
• Keyboard Controller
  • 8042 Software Compatible
  • 8 Bit Microcomputer
  • 2k Bytes of Program ROM
  • 256 Bytes of Data RAM
  • Four Open Drain Outputs Dedicated for Keyboard/Mouse Interface
  • Asynchronous Access to Two Data Registers and One Status Register
  • Supports Interrupt and Polling Access
  • 8 Bit Counter Timer
  • Port 92 Support
  • Fast Gate A20 and KRESET Outputs
• Motherboard GLUE Logic
  • IDE Reset Output
  • (4) Buffered PCI Reset Outputs with software controlled reset capability - default transparent
  • Front Panel Reset Debouncing and Power Good Signal Generation
  • Power Supply Turn On Circuitry with Support for power button on PS/2 Keyboard
  • Resume Reset Signal Generation
  • SMBus Isolation Circuitry (2 sets external and 1 set internal for Hardware Monitoring Block)
  • SMBus 2.0 compliant interface for Hardware Monitoring
  • LED Control (2)
• Fan Control
  • 5 PWM (Pulse width Modulation) Outputs
  • Two and three piece linear fan function options
  • Low frequency and high frequency PWM support
  • 6 Fan Tachometer Inputs
  • Programmable automatic fan control based on temperature
  • Interrupt Pin for out-of-limit Fantach Events
  • Fantach events generate PMEs
• Temperature Monitor
  • Monitoring of Two Remote Thermal Diodes
  • Processor temperature monitoring by PECI
  • Internal Ambient Temperature Measurement
  • Limit Comparison of all Monitored Values
  • Interrupt Pin for out-of-limit Temperature Indication
  • Thermal events generate PMEs
  • Configurable offset for internal or external temperature channels
• Voltage Monitor
  • Monitor Power Supplies (2 at 1.125V, one at 5V, one each for Vccp, Vbat, VTR, and VCC)
  • Limit Comparison of all Monitored Values
  • Interrupt Pin for out-of-limit Voltage Indication
  • Voltage events generate PME's and/or Speaker warning
• Security Features
  • Security Key Register (32 byte) for Device Authentication
• 3 VID (Voltage Identification) Inputs
• Phoenix Keyboard BIOS ROM
• 128 Pin QFP Lead-Free RoHS Compliant Package