Desktop System Controller Hub
Description
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SCH5617 Desktop System Controller Hub with Advanced, 8051µC-Based Auto Fan Control
PRODUCT FEATURES
Data Brief
ACPI 2.
0 Compliant PC2001 Compliant 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 (65nm processor diodes) — 1/8th degree temperature resolution — Internal Ambient Temperature Measurement — Limit Comparison of all Monitored Values
GLUE Logic
— — — — — — — — — Resume Reset Signal Generation Power Supply Turn On Circuitry Power Sequencing Power Good Output Power OK Signal Generation IDE Reset/Buffered PCI Reset Outputs Hard Drive Front Panel LED Power LED Control SMBus Isolation Logic
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 — Configurational Open Drain/Push-Pull Output Drivers — 100% IBM® Compatibility — Detects All Overrun and Underrun Conditions — Sophisticated Power Control Circuitry (PCC) Including Multiple Powerdown Modes for Reduced Power Consumption — 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 Pre compensation Modes
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 (diode or PECI)...
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