FDC37B782-NS

Product Summary

The FDC37B78x with advanced Consumer IRand IrDA v1.0 support incorporates a keyboardinterface, real-time clock, SMSC''s true CMOS765B floppy disk controller, advanced digital dataseparator, 16 byte data FIFO, two 16C550compatible UARTs, one Multi-Mode parallel portwhich includes ChiProtect circuitry plus EPP andECP support, on-chip 12 mA AT bus drivers, andtwo floppy direct drive support, soft powermanagement and SMI support and IntelligentPowerManagementincludingSCI/ACPI support. The true CMOS 765B coreprovides 100% compatibility with IBM PC/XT andPC/AT architectures in addition to providing dataoverflow and underflow protection.advanced digital data separator incorporatesSMSC''s patented data separator technology,allowing for ease of testing and use. Both on-chipUARTs are compatible with the NS16C550. Theparallel port, the IDE interface, and the game portselect logic are compatible with IBM PC/ATarchitecture, as well as EPP and ECP.FDC37B78x incorporates sophisticated powercontrol circuitry (PCC) which includes support forkeyboard, mouse, modem ring, power buttonsupport and consumer infrared wake-up events.The PCC supports multiple low power downmodes.GENERAL DESCRIPTIONThe FDC37B78x provides features for compliancewith the “Advanced Configuration and PowerInterface Specification” (ACPI).These features include support of both legacy andACPI power management models through theselection of SMI or SCI. It implements a powerbutton override event (4 second button hold to turnoff the system) and either edge triggeredinterrupts.PMEandThe FDC37B78x provides support for the ISAPlug-and-PlayStandardprovides for the recommended functionality tosupport Windows ''95, PC97 and PC98. ThroughThe SMSCinternal configuration registers, each of theFDC37B78x ''s logical device''s I/O address, DMAchannel and IRQ channel may be programmed. There are 480 I/O address location options, 12 IRQ options or Serial IRQ option, and four DMA channel options for each logical device. The The FDC37B78x Floppy Disk Controller and data separator do not require any external filter components and are therefore easy to use, offer lower system cost and reduced board area. The FDC is software and register compatible with SMSC''s proprietary 82077AA core.

Parametrics

Features

Super I/O Controller with ACPI Support,Real Time Clock and Consumer IR5 Volt OperationPC98/99 and ACPI 1.0 CompliantBattery Back-up for Wake-EventsISA Plug-and-Play Compatible Register Set12 IRQ Options-15 Serial IRQ Options--16 Bit Address Qualification-Four DMA Options-12mA AT Bus DriversBIOS Buffer20 GPI/O Pins32KHz Standby Clock OutputSoft Power ManagementACPI/PME SupportSCI/SMI SupportWatchdog timer-Power Button Override Event--Either Edge Triggered InterruptsIntelligent Auto Power Management-Shadowed Write-only Registers-Programmable Wake-up Event Interface8042 Keyboard Controller2K Program ROM-256 Bytes Data RAM-Asynchronous Access to Two Data-Registers and One Status RegisterSupports Interrupt and Polling Access--8 Bit Timer/Counter-Port 92 Support-Fast Gate A20 and Hardware KeyboardResetReal Time Clock Day of Month Alarm, Century Byte - MC146818 and DS1287 Compatible - 256 Bytes of Battery Backed CMOS in - Two Banks of 128 Bytes FDC37B78x FEATURES 128 Bytes of CMOS RAM Lockable in - 4x32 Byte Blocks 12 and 24 Hour Time Format - Binary and BCD Format - 5μA Standby Battery Current (max) - 2.88MB Super I/O Floppy Disk Controller Relocatable to 480 Different Addresses - Licensed CMOS 765B Floppy Disk - Controller - Advanced Digital Data Separator - SMSC''s Proprietary 82077AA Compatible Core Sophisticated Power Control Circuitry - (PCC) Including Multiple Powerdown Modes for Reduced Power Consumption Supports Two Floppy Drives Directly - Software Write Protect - - FDC on Parallel Port - Low Power CMOS Design - Supports Vertical Recording Format - 16 Byte Data FIFO - 100% IBM Compatibility Detects All Overrun and Underrun - Conditions 24mA Drivers and Schmitt Trigger - Inputs Enhanced FDC Digital Data Separator - Low Cost Implementation - No Filter Components Required - 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data Rates - Programmable Precompensation Modes

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