LPC47M287 LPC Super I/O with Temperature Sensing, Auto Fan and Glue Logic - Programmable Baud Rate Generator Product Features - Modem Control Circuitry General Features - 480 Address and 15 IRQ Options - 3.3 Volt Operation (SIO Block is 5 Volt Toler- Infrared Port ant) - Multiprotocol Infrared Interface - LPC Interface - IrDA 1.0 Compliant - Programmable Wake-up Event Interface - SHARP ASK IR - PC99, PC2001 Compliant - 480 Addresses, Up to 15 IRQ - ACPI 2.0 Compliant Multi-Mode Parallel Port with ChiProtect - Multiplexed Command, Address and Data - Standard Mode IBM PC/XT, PC/AT, and Bus PS/2 Compatible Bi-directional Parallel - Serial IRQ Interface Compatible with Serial- Port ized IRQ Support for PCI Systems - Enhanced Parallel Port (EPP) Compatible - - PME Interface EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant) - ISA Plug-and-Play Compatible Register Set - IEEE 1284 Compliant Enhanced Capabilities - 25 General Purpose Input/Output Pins Port (ECP) - System Management Interrupt - ChiProtect Circuitry for Protection AC Power Failure Recovery - 960 Address, Up to 15 IRQ and Three DMA Watchdog Timer Options 2.88MB Super I/O Floppy Disk Controller Keyboard Controller - Licensed CMOS 765B Floppy Disk Controller - 8042 Software Compatible - Software and Register Compatible with - 8 Bit Microcomputer Microchip s Proprietary 82077AA Compatible - 2k Bytes of Program ROM Core - 256 Bytes of Data RAM - Supports One Floppy Drive - Four Open Drain Outputs Dedicated for Key- - Configurable Open Drain/Push-PullOutput board/Mouse Interface Drivers - Asynchronous Access to Two Data Registers - Supports Vertical Recording Format and One Status Register - 16-Byte Data FIFO - Supports Interrupt and Polling Access - 100% IBM Compatibility - 8 Bit Counter Timer - Detects All Overrun and Underrun Conditions - Port 92 Support - Sophisticated Power Control Circuitry (PCC) - Fast Gate A20 and KRESET Outputs Including Multiple Powerdown Modes for Motherboard GLUE Logic Reduced Power Consumption - IDE Reset Output - DMA Enable Logic - (4) Buffered PCI Reset Outputs with software - Data Rate and Drive Control Registers controlled reset capability - default transpar- - 480 Address, Up to Eight IRQ and Three ent DMA Options - 3VSB Gate and 3V Gate signal generation - Support 3 Mode FDD - Front Panel Reset Debouncing and Power Enhanced Digital Data Separator Good Signal Generation - 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 - Power Supply Turn On Circuitry with Support Kbps Data Rates for power button on PS/2 Keyboard - Programmable Precompensation Modes - Resume Reset Signal Generation Serial Ports - SMBus Isolation Circuitry (2 sets external - Two Full Function Serial Ports and 1 set internal for Hardware Monitoring - High Speed NS16C550A Compatible UARTs Block) with Send/Receive 16-Byte FIFOs - SMBus 2.0 compliant interface for Hardware - Supports 230k and 460k Baud Monitoring - LED Control (2) 2007 - 2014 Microchip Technology Inc. DS00001821A-page 1LPC47M287 Fan Control Description - 3 PWM (Pulse width Modulation) Outputs The LPC47M287 is a 3.3V (Super I/O Block is 5V toler- - 3 Fan Tachometer Inputs ant) PC99/PC2001 compliant Super I/O controller with - Programmable automatic fan control based an LPC interface. LPC47M287 also includes Hardware on temperature Monitoring capabilities, enhanced Security features, Temperature Monitor Power Control logic and Motherboard Glue logic. - Monitoring of Two Remote Thermal Diodes The LPC47M287 s hardware monitoring capability (+/- 2 degree C accuracy) includes temperature, voltage and fan speed monitor- - Internal Ambient Temperature Measurement ing. It has the ability to alert the system of out-of-limit - Limit Comparison of all Monitored Values conditions and automatically control the speeds of mul- - Interrupt Pin for out-of-limit Temperature Indi- tiple fans. There are 6 analog inputs for monitoring cation external voltages of +1.5V, +2.5V, +3.3V, +5V, +12V - Thermal events generate PMEs and/or and Vccp (core processor voltage), as well as internal Speaker warning monitoring of the device s own HVCC or HVSB. The - Configurable offset for internal or external LPC47M287 includes support for monitoring two exter- temperature channels. nal temperatures via thermal diode inputs and an inter- Voltage Monitor nal sensor for measuring ambient temperature. The - Monitor Power supplies (+1.5V, +2.5V, +5V, nHWM INT pin is implemented to indicate out-of-limit +12V, Vccp, Vbat, VTR, and VCC) temperature, voltage, and FANTACH conditions. The - Limit Comparison of all Monitored Values hardware monitoring block of the LPC47M287 is - Interrupt Pin for out-of-limit Voltage Indication accessible via the System Management Bus (SMBus). - Voltage events generate PMEs and/or The same interrupt event reported on the nHWM INT Speaker warning pin also creates PME wakeup events and speaker Security Features alarm annunciation. - Security Key Register (32 byte) for Device The Motherboard Glue logic includes various power Authentication management and system logic including generation of 5 VID (Voltage Identification) Inputs nRSMRST, SMBus buffers, and buffered PCI reset out- puts. Phoenix Keyboard BIOS ROM 128 QFP RoHS Compliant Package The LPC47M287 incorporates complete legacy Super I/O functionality including an 8042 based keyboard and mouse controller, an IEEE 1284, EPP, and ECP com- patible parallel port, one serial port that is 16C550A UART compatible, one IrDA 1.0 infrared ports, and a floppy disk controller with Microchip s true CMOS 765B core and enhanced digital data separator, The true CMOS 765B core provides 100% compatibility with IBM PC/XT and PC/AT architectures and is software and register compatible with Microchip s proprietary 82077AA core. System related functionality, which offers flexibility to the system designer, General Pur- pose I/O control functions, control of two LED s, and fan control using fan tachometer inputs and pulse width modulator, (PWM), outputs The LPC47M287 is ACPI 1.0/2.0 compatible and there- fore supports multiple low power-down modes. It incor- porates sophisticated power control circuitry (PCC), which includes support for keyboard. The LPC47M287 supports the ISA Plug-and-Play Stan- dard register set (Version 1.0a). The I/O Address, DMA Channel and hardware IRQ of each logical device in the LPC47M287 may be reprogrammed through the internal configuration registers. There are up to 480 (960 - Parallel Port) I/O address location options, a Serialized IRQ interface, and Three DMA channels. DS00001821A-page 2 2007 - 2014 Microchip Technology Inc.