Microchip LPC47M192-NC

GENERAL DESCRIPTION

The LPC47M192 is a 3.3V (Super I/O Block is 5V tolerant) PC99/PC2001 compliant Super I/O controller with an LPC interface and Hardware Monitoring capabilities.
The LPC47M192’s hardware monitoring capability includes voltage and temperature monitoring with the ability to alert the system of out-of-limit conditions. There are 7 analog inputs for monitoring external voltages of +1.5V, +1.8V, +2.5V, +3.3V, +5V, +12V and Vccp (core processor voltage), as well as internal monitoring of the devices own HVCC or HVSB. The LPC47M192 includes support for monitoring two external temperatures via thermal diode inputs and an internal sensor for measuring ambient temperature. The nTHERM pin is implemented to indicate out-of-limit temperature and voltage conditions. The block has an ability to output 20ms low pulse via nRESET pin. The hardware monitoring block of the LPC47M192 is accessible via the System Management Bus (SMBus).

FEATURES

■ 3.3 Volt Operation (SIO Block is 5 Volt Tolerant)
■ LPC Interface
■ ACPI 1.0/2.0 Compliant
■ Fan Control
- Fan Speed Control Outputs (2)
- Fan Tachometer Inputs (2)
■ Programmable Wake-up Event Interface
■ PC98, PC99, PC01 Compliant
■ Dual Game Port Interface
■ MPU-401 MIDI Support
■ General Purpose Input/Output Pins (37)
■ 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
- 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
■ 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
- 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 16C550A 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
- IrDA 1.0 Compliant
- SHARP ASK IR
- 480 Addresses, Up to 15 IRQ
■ Multi-Mode Parallel Port with ChiProtect
- Standard Mode IBM PC/XT, PC/AT, and PS/2 Compatible Bi-directional 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
■ Hardware Monitor
- Monitor Power supplies (+2.5V, +3.3V, +5V, +12V, +1.8V, +1.5V, Vccp (processor voltage), and VCC or HVSB)
- Remote Thermal Diode Sensing for Two External Temperature Measurements
- Internal Ambient Temperature Measurement
- Limit Comparison of all Monitored Values
- System Management Bus (SMBus) Interface
- THERM# Pin for out-of-limit Temperature or Voltage Indication
- RESET# Pin for generating 20msec Low Reset Pulse
- Configurable offset for internal or external temperature channels.
■ AMI Keyboard BIOS ROM
■ 128 Pin QFP, 3.2mm footprint Package; green, lead-free package also available