SMSC LPC47M997 User Manual

LPC47M997

Product Features

 3.3 Volt Operation (SIO Block is 5 Volt Tolerant)
 LPC Interface
 ACPI 1.0/2.0 Compliant
 Fan Control

− Fan Speed Control Outputs (2)

− Fan Tachometer Inputs (2)

 Programmable Wake-up Event Interface
 PC98, PC99, PC01 Compliant
 Dual Game Port Interface
 MPU-401 MIDI Support
 General Purpose Input/Output Pins (37)
 ISA Plug-and-Play Compatible Register Set
 Intelligent Auto Power Management
 System Management Interrupt
 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 Two Floppy Drives

− 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 15 IRQ and Three DMA Options

 Enhanced Digital Data Separator

− 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps
Data Rates

− Programmable Precompensation Modes

LPC Super I/O with
Hardware Monitoring
Block

Data Brief

 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

 Serial Ports

− Two Full Function Serial Ports

− High Speed 16C550A 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 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

SMSC LPC47M997 Page 1 Rev. 01-12-07

PRODUCT PREVIEW

 LPC Interface

− Multiplexed Command, Address and Data Bus

− Serial IRQ Interface Compatible with Serialized IRQ

Support for PCI Systems

− PME Interface

 Hardware Monitor

− Monitor Power supplies (+2.5V, +3.3V, +5V, +12V,
+1.8V, +1.5V, Vccp (processor voltage), and VCC or
HVSB)

− Remote Thermal Diode Sensing for Two External
Temperature Measurements

− Internal Ambient Temperature Measurement

− Limit Comparison of all Monitored Values

− System Management Bus (SMBus) Interface

− THERM# Pin for out-of-limit Temperature or Voltage

Indication

− RESET# Pin for generating 20msec Low Reset
Pulse

− Configurable offset for internal or external
temperature channels

 Phoenix Keyboard BIOS ROM
 128 Pin QFP, lead-free RoHS compliant

package, 3.2mm footprint

ORDERING INFORMATION

Order Number:

LPC47M997-NW for 128 pin, QFP lead-free RoHS compliant package

Rev. 01-12-07 Page 2 SMSC LPC47M997

PRODUCT PREVIEW