PC98/99 Compliant Enhanced Super I/O Controller

FDC37M81x PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up FEATURES • • • • 5 Volt Operation PC98, PC99 Compliant ISA Plug-and-Play Compatible Register Set Intelligent Auto Power Management Shadowed Write-Only Registers Programmable Wake-up Event Interface System Management Interrupt, Watchdog Timer 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 One Floppy Drive 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 15 IRQ and Three DMA Options • • Floppy Disk Available on Parallel Port Pins 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 8042 P12, P16 and P17 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 Modem Control Circuitry 480 Address and 15 IRQ Options IrDA 1.0, HP-SIR, ASK IR Support • • • • • 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 Against Damage Due to Printer PowerOn • • 480 Address, Up to 15 IRQ and Three DMA Options ISA Host Interface 16 Bit Address Qualification 8 Bit Data Bus IOCHRDY for ECP and IrCC Three 8 Bit DMA Channels Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems PME Interface 100 Pin QFP Lead-free RoHS Compliant Package Order Number: FDC37M817-MS for 100 pin, QFP Lead-free RoHS Compliant Package GENERAL DESCRIPTION The FDC37M81x* with IrDA v1.0 support incorporates a keyboard interface, SMSC's true CMOS 765B floppy disk controller, advanced digital data separator, two 16C550A compatible UARTs, one Multi-Mode parallel port which includes ChiProtect circuitry plus EPP and ECP, on-chip 12 mA AT bus drivers, one floppy direct drive support, and Intelligent Power Management including PME support. The true CMOS 765B core provides 100% compatibility with IBM PC/XT and PC/AT architectures in addition to providing data overflow and underflow protection. The SMSC advanced digital data separator incorporates SMSC's patented data separator technology, allowing for ease of testing and use. Both on-chip UARTs are compatible with the NS16C550A. The parallel port is compatible with IBM PC/AT architecture, as well as IEEE 1284 EPP and ECP. The FDC37M81x incorporates sophisticated power control circuitry (PCC) which includes support for keyboard, mouse, and modem ring wake-up events. The PCC supports multiple low power-down modes. The FDC37M81x supports the ISA Plug-and-Play Standard (Version 1.0a) and provides the recommended functionality to support Windows '95/’98. The I/O Address, DMA Channel and hardware IRQ of each logical device in the FDC37M81x may be reprogrammed through the internal configuration registers. There are 480 I/O address location options, a Serialized IRQ interface, and three DMA channels. The FDC37M81x does not require any external filter components and is therefore easy to use and offers lower system costs and reduced board area. The FDC37M81x is software and register compatible with SMSC's proprietary 82077AA core. *The “x” in the part number is a designator that changes depending upon the particular BIOS used inside the specific chip. “2” denotes AMI Keyboard BIOS and “7” denotes Phoenix 42i Keyboard BIOS. 2 TABLE OF CONTENTS FEATURES.............................................................................................................................................. 1 GENERAL DESCRIPTION ...................................................................................................................... 2 PIN CONFIGURATION............................................................................................................................ 5 DESCRIPTION OF PIN FUNCTIONS ..................................................................................................... 6 Buffer Type Descriptions ..................................................................................................................... 9 Description of Multifunction Pins ........................................................................................................10 REFERENCE DOCUMENTS..................................................................................................................10 POWER FUNCTIONALITY ....................................................................................................................12 VCC Power ........................................................................................................................................12 VTR Support ......................................................................................................................................12 Internal PWRGOOD...........................................................................................................................12 Trickle Power Functionality ................................................................................................................13 Maximum Current Values...................................................................................................................13 Power Management Events (PME/SCI) .............................................................................................13 FUNCTIONAL DESCRIPTION ...............................................................................................................14 Super I/O Registers............................................................................................................................14 Host Processor Interface....................................................................................................................14 FLOPPY DISK CONTROLLER ..............................................................................................................15 FDC Internal Registers.......................................................................................................................15 Command Set/Descriptions................................................................................................................38 Instruction Set ....................................................................................................................................41 SERIAL PORT (UART)...........................................................................................................................68 INFRARED INTERFACE ........................................................................................................................82 PARALLEL PORT ..................................................................................................................................83 IBM XT/AT Compatible, Bi-Directional And Epp Modes .......................................................................85 Extended Capabilities Parallel Port......................................................................................................91 PARALLEL PORT FLOPPY DISK CONTROLLER .............................................................................104 POWER MANAGEMENT .....................................................................................................................106 SERIAL IRQ .........................................................................................................................................112 GP INDEX REGISTERS .......................................................................................................................116 WATCH DOG TIMER ...........................................................................................................................118 8042 KEYBOARD CONTROLLER DESCRIPTION .............................................................................119 Latches On Keyboard And Mouse IRQs ..........................................................................................128 Keyboard and Mouse PME Generation............................................................................................129 3 SYSTEM MANAGEMENT INTERRUPT (SMI) .....................................................................................131 PME SUPPORT....................................................................................................................................132 CONFIGURATION................................................................................................................................133 OPERATIONAL DESCRIPTION ..........................................................................................................164 Maximum Guaranteed Ratings.........................................................................................................164 DC Electrical Characteristics............................................................................................................164 TIMING DIAGRAMS ....................................................