SCH5027D-NW
Super I/O with
Temperature Sensing,
Quiet Auto Fan and
Glue Logic with PECI
PRODUCT FEATURES
General Features
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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
Data Brief
Infrared Port
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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
AC Power Failure Recovery
Watchdog Timer
2.88 MB 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-PullOutput 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
Keyboard Controller
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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
— 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
Fan Control
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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
Revision 0.36 (06-08-07)
SMSC SCH5027D-NW
PRODUCT PREVIEW