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
PC98, PC99, PC01 Compliant
Dual Game Port Interface
General Purpose Input/Output Pins (37)
ISA
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
−Supports Vertical Recording Format
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−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
−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
Standard Mode IBM PC/XT, PC/AT, and PS/2 Compatible
−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. |