SMSC - LPC47S422 - Enhanced Super I/O Controller with LPC Interface for Server Applications

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LPC47S422

Enhanced Super I/O Controller with LPC Interface for Server Applications

Note: The LPC47S422 is not recommended for new designs. The SCH4304 is the suggested replacement device for this product.

Features

3.3 Volt Operation (5V Tolerant)
Floppy Disk Controller (Supports Two FDCs)
Multi-Mode™ Parallel Port
Two UARTs
8042 Keyboard Controller
SMBus Controller
X-Bus Interface
Programmable Wake-Up Event Interface (nIO_PME Pin)
SMI Support (nIO_SMI Pin)
GPIOs (39)
Fan Speed Control Output
Fan Tachometer Input
ISA IRQ to Serial IRQ Conversion
XNOR Chain
PC99 and ACPI 1.0 Compliant
ISA Plug-and-Play Compatible Register Set
Intelligent Auto Power Management
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
- 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 NS16C550 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
- IrDA 1.0, HP-SIR, ASKIR Support
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 Power-On
- 480 Address, Up to 15 IRQ and Three DMA Options
- Multiplexed Command, Address and Data Bus
- 8 Bit I/O Transfers
- 8 Bit DMA Transfers
- 16 Bit Address Qualification
- Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems
- Power Management Event (PME) Interface Pin
100 Pin QFP Lead-Free RoHS Compliant Package

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