SCH5017-NW

Product Summary

The SCH5017-NW is a 3.3V (Super I/O Block is 5V tolerant) PC99/PC2001 compliant Super I/O controller with an LPC interface. SCH5017 also includes Hardware Monitoring capabilities, enhanced Security features, Power Control logic and Motherboard Glue logic. The SCH5017-NW hardware monitoring capability includes temperature, voltage and fan speed monitoring. It has the ability to alert the system to out-of-limit conditions and automatically control the speeds of multiple fans. There are four analog inputs for monitoring external voltages of +5V, +5VTR, +12V and Vccp (core processor voltage), as well as internal monitoring of the SIOs VCC, VTR, and Vbat power supplies. The SCH5017 includes support for monitoring two external temperatures via thermal diode inputs and an internal sensor for measuring ambient temperature. The nHWM_INT pin is implemented to indicate out-of-limit temperature, voltage, and FANTACH conditions. The hardware monitoring block of the SCH5017-NW is accessible via the System Management Bus (SMBus). The same interrupt event reported on the nHWM_INT pin also creates PME wakeup events and speaker alarm annunciation. The SCH5017-NW also allows for a two or three piece linear fan function. The Motherboard Glue logic includes various power management and system logic including generation of nRSMRST, SMBus buffers, and buffered PCI reset outputs.

Parametrics

SCH5017-NW absolute maximum ratings: (1)Supply Voltage, VCC: 15V; (2)Supply Voltage, PVCC: VCC + 0.3V; (3)BOOT Voltage, VBOOT-VPHASE: 15V; (4)Input Voltage, VPWM: GND - 0.3V to 7V; (5)PHASE to GND DC: ?5V to 15V, < 200ns: ?10V to 30V; (6)BOOT to GND DC: ?0.3V to VCC + 15V, < 200ns: ?0.3V to 42V; (7)UGATE: VPHASE - 0.3V to VBOOT + 0.3V; (8)LGATE: GND - 0.3V to VPVCC + 0.3V, < 200ns: ?2V to VCC + 0.3V; (9)Power Dissipation, PD @ TA = 25℃ VQFN?16L 3x3: 1.471W, SOP-14: 0.909W; (10)Storage Temperature Range: ?40℃ to 150℃; (11)Lead Temperature (Soldering, 10 sec.): 260℃; (12)ESD Susceptibility: 2kV, MM (Machine Mode): 200V

Features

SCH5017-NW features: (1)3.3 Volt Operation (SIO Block is 5 Volt Tolerant); (2)LPC Interface; (3)Programmable Wake-up Event Interface; (4)PC99, PC2001 Compliant; (5)ACPI 2.0 Compliant; (6)Multiplexed Command, Address and Data Bus; (7)Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems; (8)PME Interface; (9)ISA Plug-and-Play Compatible Register Set; (10)25 General Purpose Input/Output Pins; (11)System Management Interrupt; (12)Licensed CMOS 765B Floppy Disk Controller; (13)Software and Register Compatible with SMSCs Proprietary 82077AA Compatible Core; (14)Supports One Floppy Drive; (15)Configurable Open Drain/Push-Pull Output Drivers; (16)Supports Vertical Recording Format; (17)16-Byte Data FIFO; (18)100% IBM? Compatibility; (19)Detects All Overrun and Underrun Conditions; (20)Sophisticated Power Control Circuitry (PCC)Including Multiple Powerdown Modes for Reduced Power Consumption; (21)DMA Enable Logic; (22)Data Rate and Drive Control Registers; (23)480 Address, Up to Eight IRQ and Three DMA Options; (24)Support 3 Mode FDD.

Diagrams

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