LPC47B27x
100 Pin Enhanced Super I/O Controller with LPC
Interface
FEATURES
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3.3 Volt Operation, 5 Volt Tolerant
LPC Interface
Fan Control
Fan Speed Control Outputs (2)
Fan Tachometer Inputs (2)
Programmable Wake-up Event Interface
PC98, PC99, and ACPI 1.0 Compliant
Dual Game Port Interface
MPU-401 MIDI Support
General Purpose Input/Output Pins (37)
ISA IRQ to Serial IRQ Conversion
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 SMSC's 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 15 IRQ and
Three DMA Options
Floppy Disk Available on Parallel Port Pins
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
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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
32-Byte Data FIFO
IrDA 1.0 Compliant
Consumer IR
SHARP ASK IR
480 Address, Up to 15 IRQ and Three
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
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
package also available
SMSC LPC47B27x
Rev. 08-10-04
DATASHEET
