ORDERING INFORMATION
LPC47M102S-MC for AMI BIOS in 100 pin QFP package (leaded)
LPC47M102S-MS for AMI BIOS in 100 pin QFP lead-free RoHS compliant package
LPC47M107S-MC for Phoenix BIOS in 100 pin QFP package (leaded)
LPC47M107S-MS for Phoenix BIOS in 100 pin QFP lead-free RoHS compliant package
GENERAL DESCRIPTION
The LPC47M10x* is a 3.3V (5V tolerant) PC98/PC99 compliant Super I/O controller. The LPC47M10x 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 LPC47M10x 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 LPC47M10x 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 LPC47M10x 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 LPC47M10x supports the ISA Plug-and-Play Standard (Version 1.0a) and provides the recommended
functionality to support Windows '95. The I/O Address, DMA Channel and hardware IRQ of each logical device in the
LPC47M10x 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 LPC47M10x does not require any external filter components and is therefore easy to use and offers lower system
costs and reduced board area. The LPC47M10x is software and register compatible with SMSC's proprietary
82077AA core.
*The “x” in the part number is a designator that changes depending upon the particular BIOS used inside the specific chip. “2”
denotes AMI Keyboard BIOS and “7” denotes Phoenix 42i Keyboard BIOS.
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