Note: The SCH5617 is not recommended for new designs. The SCH5617C or the SCH5627 is the suggested replacement device for this product.

Features

• ACPI 2.0 Compliant
• High Performance 8051
  • 2.5X average instruction execution speed improvement over the entire instruction set; i.e., typical 4-clock instruction cycle in high-performance 8051 vs. 12-clock instruction cycle in standard 8051.
  • Faster clock speed: 32 MHz vs.16 MHz in standard 8051.
  • Dual Data Pointers
  • More Interrupts: Power-Fail, External Interrupt 2, External Interrupt 3, etc.
  • A set of External Memory/Mapped Control Registers provides the 80C51 core with the ability to directly control many functional blocks of the SCH5617.
  • 384 Bytes of RAM as part of the 8051 core
  • 4k Bytes Data RAM (869 bytes may be used to patch ROM code)
  • Twelve Interrupt Sources
  • Watch Dog Timer (WDT)
• PECI Interface
• Temperature Monitor
  • Monitoring of up to Two Remote Thermal Diodes
  • Supports temperature readings from -63 degrees to +192 degrees
    • Supports monitoring of discrete diodes (3904 type diodes)
    • Supports monitoring substrate diodes (45nm & 65nm processor diodes)
  • 1/8th degree temperature resolution
  • Internal Ambient Temperature Measurement
  • Limit Comparison of all Monitored Values
• PROCHOT_IN# Pin
  • Mapped into Temperature monitoring interrupt generation logic
  • May be used to adjust fan control limits
  • May be configured to force fans on full
• PROCHOT_OUT Pin
• Auto-Fan Control with ProcHot Features
  • PWM (Pulse width Modulation) Outputs (3)
    • Legacy PWM control dc fan outputs
  • High Frequency PWM Options (15kHz up to 30kHz)
  • 2 second delayed start-up for PWM outputs
  • Fan Tachometer or Lock Rotor Inputs (3)
  • Programmable linear automatic fan control based on temperature
  • Acoustic enhancement mode
  • ProcHot pins modulate Tmin
  • Fan PWM duty cycle is a function in linear mode of multiple temperatures and ProcHot signals
  • PWM Ramp Rate Closed Loop Control
• Internal Ring Oscillator for VTR Powered Logic
• Low Battery Warning
• LED Control
• SMBus Isolation Logic
• Programmable Wake-up Event Interface
• PC2001 Compliant
• General Purpose Input/Output Pins (30 Host controlled, 16 8051 controlled)
• 21 Dedicated Scratchpad registers
• ISA Plug-and-Play Compatible Register Set
• System Management Interrupt
• GLUE Logic
  • IDE Reset/Buffered PCI Reset Outputs
  • Power OK Signal Generation
  • Power Sequencing
  • Power Supply Turn On Circuitry
  • Resume Reset Signal Generation
  • Hard Drive Front Panel LED
• 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 Eight IRQ and Four 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 NS16C550A Compatible UARTs with Send/Receive 16-Byte FIFOs
  • Supports 230k and 460k Baud
  • Programmable Baud Rate Generator
    • Supports all standard baud rates up to 115k bps
    • Supports non-standard baud rates of 230k and 460k bps
  • Modem Control Circuitry
  • 480 Address and 15 IRQ Options
• Infrared Port
  • Multi protocol Infrared Interface
  • IrDA 1.0 Compliant
  • SHARP ASK IR
  • 480 Address, Up to 15 IRQ
• Multi-Mode™ Parallel Port with ChiProtect™
  • Standard Mode IBM PC/XT®, PC/AT®, and PS/2™ Compatible Bidirectional 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 Four DMA Options
• LPC Interface
  • Multiplexed Command, Address and Data Bus
  • Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems
  • PME Interface
• Power Good Output
• 3.3 Volt I/O
• 128 Pin QFP Lead-Free RoHS Compliant Package