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LPC47M112-MC Datasheet(PDF) 3 Page - SMSC Corporation

Part No. LPC47M112-MC
Description  ENHANCED SUPER I/O CONTROLLER WITH LPC INTERFACE
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Maker  SMSC [SMSC Corporation]
Homepage  http://www.smsc.com
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 3 page
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SMSC DS – LPC47M112
Page 3
Rev. 01/09/2001
GENERAL DESCRIPTION
The LPC47M112-MC* is a 3.3V (5V tolerant) PC98/PC99 compliant Super I/O controller. The LPC47M112-MC
implements the LPC interface, a pin reduced ISA bus interface which provides the same or better performance as the
ISA/X-bus with a substantial savings in pins used. The LPC47M112-MC provides fan control through two fan speed
control output pins and two fan tachometer input pins. It also provides 37 general purpose input/output (GPIO) pins, a
dual game port interface and MPU-401 MIDI support.
The LPC47M112-MC incorporates a keyboard interface, SMSC's true CMOS 765B floppy disk controller, advanced
digital data separator, two 16C550A compatible UARTs, one Multi-Mode parallel port which includes ChiProtect
circuitry plus EPP and ECP, on-chip 12 mA AT bus drivers, one floppy direct drive support, and Intelligent Power
Management including PME support. The true CMOS 765B core provides 100% compatibility with IBM PC/XT and
PC/AT architectures in addition to providing data overflow and underflow protection. The SMSC advanced digital data
separator incorporates SMSC's patented data separator technology, allowing for ease of testing and use. Both on-
chip UARTs are compatible with the NS16C550A. The parallel port is compatible with IBM PC/AT architecture, as
well as IEEE 1284 EPP and ECP. The LPC47M112-MC incorporates sophisticated power control circuitry (PCC)
which includes support for keyboard and mouse wake-up events. The PCC supports multiple low power-down
modes.
The LPC47M112 supports the ISA Plug-and-Play Standard (Version 1.0a) and provides the recommended
functionality to support Windows '95, Windows 98, Windows 2000 and Windows ME.
The I/O Address, DMA Channel and hardware IRQ of each logical device in the LPC47M112-MC may be
reprogrammed through the internal configuration registers. There are 480 I/O address location options, a Serialized
IRQ interface, and three DMA channels.
The LPC47M112-MC does not require any external filter components and is therefore easy to use and offers lower
system costs and reduced board area. The LPC47M112-MC is software and register compatible with SMSC's
proprietary 82077AA core.
ORDERING INFORMATION
Order Number:
LPC47M112-MC for 100 Pin QFP Package




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