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SMSC LPC47M997 Page 1 Rev. 01-12-07
PRODUCT PREVIEW
LPC47M997
LPC Super I/O with
Hardware Monitoring
Block
Data Brief
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
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