SCH3112 Datasheet, PDF (1/396 Pages) SMSC Corporation – LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports

SCH3112, SCH3114, SCH3116
LPC IO with 8042 KBC,
Reset Generation, HWM
and Multiple Serial
Ports
PRODUCT FEATURES
Datasheet
■ General Features
— 3.3 Volt Operation (SIO Block is 5 Volt Tolerant)
— Low Pin Count Bus (LPC) Interface
— Programmable Wake-up Event (PME) Interface
— PC99, PC2001 Compliant
— ACPI 2.0 Compliant
— Serial IRQ Interface Compatible with Serialized IRQ
Support for PCI Systems
— ISA Plug-and-Play Compatible Register Set
— Four Address Options for Power On Configuration Port
— System Management Interrupt (SMI)
— 40 General Purpose I/O pins
— 6 GPIO with VID compatible inputs
— Support for power button on PS/2 Keyboard
— Security Key Register (32 byte) for Device
Authentication
■ Watchdog Timer
■ Resume and Main Power Good Generator
■ Programmable Clock Output to 16 HZ.
■ 2.88MB Super I/O Floppy Disk Controller
— Licensed CMOS 765B Floppy DiskController
— Supports Two Floppy Drives
— Configurable Open Drain/Push-Pull
— 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 Eight IRQ and Four DMA Options
— Support FDD Interface on Parallel Port Pins
■ Enhanced Digital Data Separator
— 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbp 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
— Phoenix Keyboard BIOS ROM
■ Multiple Serial Ports
— SCH3112 - 2 Full Function Serial Ports
— SCH3114 - 4 Full Function Serial Ports
— SCH3116 - 4 Full Function and 2 Four-Pin Serial Ports
— High Speed NS16C550A Compatible UARTs with
— Send/Receive 16-Byte FIFOs
— Supports 230k, 460k, 921k and 1.5M Baud
— Programmable Baud Rate Generator
— Modem Control Circuitry
— 480 Address and 15 IRQ Options
— Support IRQ Sharing among serial ports
— RS485 Auto Direction Control Mode
■ 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)
— EEE 1284 Compliant Enhanced Capabilities Port (ECP)
— ChiProtect Circuitry for Protection
— 960 Address, Up to 15 IRQ and Four DMA Options
■ Hardware Monitor
— Monitor Power supplies (+2.5V, +5V, +12V, Vccp
(processor voltage), VCC, Vbat and Vtr.
— Remote Thermal Diode Sensing for Two External
Temperature Measurements accurate to 1.5^oC
— Internal Ambient Temperature Measurement
— Limit Comparison of all Monitored Values
— Programmable Automatic FAN control based on
temperature
— nHWM_INT Pin for out-of-limit Temperature or Voltage
Indication
— Configurable offset for internal or external temperature
channels
— Thermtrip signal for over temperature indication
■ IDE Reset Output and 3 PCI Reset Buffers with
Software Control Capability (SCH3112 and SCH3114
Only)
■ Power Button Control and AC Power Failure
Recovery (SCH3112 and SCH3114 Only)
■ Industrial (+85°C to -40°C) Temperature Range
■ 128 Pin VTQFP Package
SMSC SCH311X
DATASHEET
Rev 0.2 (09-28-04)