LPC47S422 Datasheet, PDF (1/4 Pages) SMSC Corporation – Enhanced Super I/O with LPC Interface for Server Applications

LPC47S422
Enhanced Super I/O
with LPC Interface for
Server Applications
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 Wakeup 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
Data Brief
„ 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, ASK IR 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 3 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
SMSC LPC47S422
PRODUCT PREVIEW
Rev. 05-07-07