SCH5027E

Super I/O with

Temperature Sensing,

Quiet Auto Fan and

Glue Logic with PECI

PRODUCT FEATURES

Data Brief

„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

„PECI Interface

—Supports PECI REQUEST# and PECI AVAILABLE signalling

„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

„Infrared Port

—Multiprotocol Infrared Interface

—IrDA 1.0 Compliant

—SHARP ASK IR

—480 Addresses, Up to 15 IRQ

„Multi-Mode™ Parallel Port with ChiProtect™

—Standard Mode IBM PC/XT®, PC/AT®, and PS/2™ Compatible Bi-directional 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)

„ Serial Ports

„ Fan Control

— Two Full Function Serial Ports

— 5 PWM (Pulse width Modulation) Outputs

— High Speed NS16C550A Compatible UARTs with

— Low frequency and high frequency PWM support

 

Send/Receive 16-Byte FIFOs

— 6 Fan Tachometer Inputs

— Supports 230k and 460k Baud

— Programmable automatic fan control based on

— Programmable Baud Rate Generator

temperature

—

Modem Control Circuitry

— Interrupt Pin for out-of-limit Fantach Events

—

480 Address and 15 IRQ Options

— Fantach events generate PME’s

SMSC SCH5027E

PRODUCT PREVIEW

Revision 0.2 (02-11-09)