GENERAL DESCRIPTION
The SMSC LPC47N227 is a 3.3V PC 99 and ACPI 1.0b compliant Super I/O Controller. The LPC47N227 implements the LPC interface, a pin reduced ISA interface which provides the same or better performance as the ISA/X-bus with a substantial savings in pins used. The part also includes 29 GPIO pins.

FEATURES
◾ 3.3 Volt Operation (5V Tolerant)
◾ PC99 and ACPI 1.0b Compliant
◾ Programmable Wakeup Event Interface (nIO_PME Pin)
◾ SMI Support (nIO_SMI Pin)
◾ GPIOs (29)
◾ Two IRQ Input Pins
◾ XNOR Chain
◾ Intelligent Auto Power Management
◾ 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 One Floppy Drive 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
   - Swap Drives A and B
   - Non-Burst Mode DMA Option
   - 48 Base I/O Address, 15 IRQ and 3 DMA Options
   - Forceable Write Protect and Disk Change Controls
◾ Floppy Disk Available on Parallel Port Pins (ACPI Compliant)
◾ Enhanced Digital Data Separator
   - 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data Rates
   - Programmable Precompensation Modes
◾ Serial Ports
   - Two Full Function Serial Ports
   - High Speed NS16C550 Compatible UARTs with Send/Receive 16-Byte FIFOs
   - Supports 230k and 460k Baud
   - Programmable Baud Rate Generator
   - Modem Control Circuitry
◾ Infrared Communications Controller
   - IrDA v1.2 (4Mbps), HPSIR, ASKIR, Consumer IR Support
   - 2 IR Ports
   - 96 Base I/O Address, 15 IRQ Options and 3 DMA Options
◾ 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 Against Damage Due to Printer PowerOn
   - 192 Base I/O Address, 15 IRQ and 3 DMA Options