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