LPC47S45x

Advanced I/O with X-Bus Interface

FEATURES

ƒ3.3 Volt Operation (5V tolerant)

ƒFloppy Disk Controller (Supports 2 FDCs)

ƒMulti-Mode Parallel Port

ƒTwo UARTs

ƒ8042 Keyboard Controller

ƒSMBus Controller

-SMBus access to LCD Interface

-SMBus Serial Port 2 Interface Disable

-SMBus access to Power On Elapsed Time Counters

-Programmable Slave Address

ƒX-Bus Interface

-Supports up to four external I/O components

-Offers two modes of operation

-Support for Driving LCD Panel Interface Controller

-Supports Port 80h “Snooping”

ƒProgrammable Wakeup Event Interface (IO_PME# Pin)

ƒSMI Support (IO_SMI# Pin)

ƒGPIOs (55)

ƒFan Controller

-One Fan Speed Control Output

-One Fan Tachometer Input

ƒISA IRQ to Serial IRQ Conversion

ƒXNOR Chain for Board Test Mode

ƒPC2001 and ACPI 2.0 Compliant

ƒ128-pin QFP Package

ƒISA Plug-and-Play Compatible Register Set

ƒIntelligent Auto Power Management

ƒPower On Elapsed Time Counters

-Counter for Main Power

-Counter for Standby Power

ƒReal Time Clock

-MC146818 and DS1287 Compatible

-256 Bytes of Battery Backed CMOS in Two 128- Byte Banks

-128 Bytes of CMOS RAM Lockable in 4x32 Byte Blocks

-12 and 24 Hour Time Format

-24-hour daily alarm

-30-day alarm

-Binary and BCD Format

-<1∝A Standby Current (typ)

ƒ2.88MB 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 Four DMA Options

ƒEnhanced Digital Data Separator

-2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data Rates

-Programmable Precompensation Modes

ƒKeyboard 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

ƒSerial 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

-IrDA 1.0, HP-SIR, ASK IR Support

SMSC LPC47S45x

1

Rev. 04-30-07

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