General Description
The LPC47M10x* is a 3.3V (5V tolerant) PC98/PC99 compliant Super I/O controller. The LPC47M10x implements the LPC interface, a pin reduced ISA bus interface which provides the same or better performance as the ISA/X-bus with a substantial savings in pins used. The LPC47M10x provides fan control through two fan speed control output pins and two fan tachometer input pins. It also provides 37 general purpose input/output (GPIO) pins, a dual game port interface and MPU-401 MIDI support.

PRODUCT FEATURES
■ 3.3 Volt Operation (5 Volt Tolerant)
■ LPC Interface
■ ACPI 1.0 Compliant
■ Fan Control
   — Fan Speed Control Outputs
   — Fan Tachometer Inputs
■ Programmable Wake-up Event Interface
■ PC98, PC99 Compliant
■ Dual Game Port Interface
■ MPU-401 MIDI Support
■ General Purpose Input/Output Pins
■ 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 SMSCs Proprietary 82077AA Compatible Core
   — Supports Two Floppy Drives Directly
   — 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
■ 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 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
■ 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 Bidirectional 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
■ LPC Interface
   — Multiplexed Command, Address and Data Bus
   — Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems
   — PME Interface
■ 100 Pin QFP package, green, lead-free packages also available