LPC47M182 Advanced I/O Controller with Motherboard GLUE Logic Enhanced Digital Data Separator Product Features - 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 3.3V Operation (5V tolerant) Kbps Data Rates LPC Interface - Programmable Precompensation Modes - Multiplexed Command, Address and Data Keyboard Controller Bus - 8042 Software Compatible - Serial IRQ Interface Compatible with Serial- - 8 Bit Microcomputer ized IRQ Support for PCI Systems - 2k Bytes of Program ROM ACPI 1.0b/2.0 Compliant - 256 Bytes of Data RAM Programmable Wake-up Event Interface - Four Open Drain Outputs Dedicated for Key- board/Mouse Interface PC99a/PC2001 Compliant - Asynchronous Access to Two Data Registers General Purpose Input/Output Pins (13) and One Status Register Fan Tachometer Inputs (2) - Supports Interrupt and Polling Access Green and Yellow Power LEDs - 8 Bit Counter Timer ISA Plug-and-Play Compatible Register Set - Port 92 Support Motherboard GLUE Logic - Fast Gate A20 and KRESET Outputs - 5V Reference Generation Serial Ports - 5V Standby Reference Generation - Two Full Function Serial Ports - IDE Reset/Buffered PCI Reset Outputs - High Speed 16C550A Compatible UART with - Power OK Signal Generation Send/Receive 16-Byte FIFOs - Power Sequencing - Supports 230k and 460k Baud - Power Supply Turn On Circuitry - Programmable Baud Rate Generator - Resume Reset Signal Generation - Modem Control Circuitry - Hard Drive Front Panel LED - 480 Address and 15 IRQ Options - Voltage Translation for DDC to VGA Monitor Infrared Port - SMBus Isolation Circuitry - Multiprotocol Infrared Interface - CNR Dynamic Down Control - 32-Byte Data FIFO 2.88MB Super I/O Floppy Disk Controller - IrDA 1.0 Compliant - Licensed CMOS 765B Floppy Disk Controller - SHARP ASK IR - Software and Register Compatible with -HP-SIR Microchip s Proprietary 82077AA Compatible - 480 Address, Up to 15 IRQ and Three DMA Core Options - Supports One Floppy Drive Multi-Mode Parallel Port with ChiProtect - Configurable Open Drain/Push-Pull Output , - Standard Mode IBM PC/XT PC/AT, and PS/2 Drivers Compatible Bi-directional Parallel Port - Supports Vertical Recording Format - Enhanced Parallel Port (EPP) Compatible - 16-Byte Data FIFO EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant) - 100% IBM Compatibility - IEEE 1284 Compliant Enhanced Capabilities - Detects All Overrun and Underrun Conditions Port (ECP) Sophisticated Power Control Circuitry (PCC) - ChiProtect Circuitry for Protection Including Multiple Powerdown Modes for - 960 Address, Up to 15 IRQ and Three DMA Reduced Power Consumption Options - DMA Enable Logic Interrupt Generating Registers - Data Rate and Drive Control Registers - Registers Generate IRQ1 IRQ15 on Serial 480 Address, Up to Eight IRQ and Three DMA IRQ Interface. Options XOR-Chain Board Test 128-Pin QFP RoHS Compliant Package, 3.2 mm Footprint 2007 - 2014 Microchip Technology Inc. DS00001809A-page 1LPC47M182 Description The LPC47M182 is a 3.3V (5V tolerant) PC99a/PC2001 compliant Advanced I/O controller for Desktop PCs. The device, which implements the Low Pin Count (LPC) interface, includes I/O functionality as well as Motherboard GLUE logic into a 128-pin package. This is a space saving solution on the motherboard resulting in lower cost. The LPC47M182 also provides 13 general purpose pins, which offer flexibility to the system designer, and two Fan Tachometer Inputs. The LPC47M182s LPC interface supports LPC I/O and DMA cycles. The LPC47M182 includes complete legacy I/O: a keyboard interface Microchip s true CMOS 765B floppy disk controller with advanced digital data separator two 16C550A compatible UARTs one Multi-Mode parallel port including ChiProtect circuitry plus EPP and ECP. The true CMOS 765B core provides 100% compatibility with IBM PC/ XT and PC/AT architectures, in addition, it provides data overflow and underflow protection. The Microchips patented advanced digital data separator allows for ease of testing and use. The parallel port is compatible with IBM PC/AT architecture, as well as IEEE 1284 EPP and ECP. The LPC47M182 incorporates sophisticated power control circuitry (PCC) which includes support for keyboard and mouse wake up events as well as PME support. The PCC supports multiple low power-down modes. The LPC47M182 is ACPI 1.0b/2.0 compatible. The Motherboard GLUE logic includes various power management logic including generation of nRSMRST, Power OK signal generation, 5V main and standby reference generation. There are also three LEDs to indicate power status and hard drive activity. The translation circuit converts 3.3V signals to 5V signals. Also included is SMBus main power well to resume power well isolation circuitry. The LPC47M182 supports the ISA Plug-and-Play Standard register set (Version 1.0a). The I/O Address, DMA Channel and hardware IRQ of each logical device in the LPC47M182 may be reprogrammed through the internal configuration registers. There are up to 480 (960 for Parallel Port) I/O address location options, a Serialized IRQ interface, and three DMA channels. On chip, Interrupt Generating Registers enable external software to generate IRQ1 through IRQ15 on the Serial IRQ Interface. The LPC47M182s Enhanced Digital Data Separator does not require any external filter components and is therefore easy to use and offers lower system costs and reduced board area. The LPC47M182 is register compatible with Micro- chips proprietary 82077AA core. DS00001809A-page 2 2007 - 2014 Microchip Technology Inc.