128 Pin Enhanced Super I/O Controller

FDC37B72x 128 Pin Enhanced Super I/O Controller with ACPI Support FEATURES • • • • • 5 Volt Operation PC98/99 and ACPI 1.0 Compliant Battery Back-up for Wake-Events ISA Host Interface ISA Plug-and-Play Compatible Register Set 12 IRQ Options 15 Serial IRQ Options 16 Bit Address Qualification Four DMA Options 12mA AT Bus Drivers BIOS Buffer 20 GPI/O Pins 32 kHz Standby Clock Output Soft Power Management ACPI/PME Support SCI/SMI Support Watchdog timer Power Button Override Event Either Edge Triggered Interrupts Intelligent Auto Power Management Shadowed Write-only Registers Programmable Wake-up Event Interface 8042 Keyboard Controller 2K Program ROM 256 Bytes Data RAM Asynchronous Access to Two Data Registers and One Status Register Supports Interrupt and Polling Access 8 Bit Timer/Counter Port 92 Support Fast Gate A20 and Hardware Keyboard Reset 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 Serial Ports Relocatable to 480 Different Addresses - • • • • • • • • • • • - - Two High Speed NS16C550A Compatible UARTs with Send/Receive 16 Byte FIFOs Programmable Baud Rate Generator Modem Control Circuitry Including 230K and 460K Baud IrDA 1.0, HP-SIR, ASK-IR Support Ring Wake Filter • • Multi-Mode™ Parallel Port with ChiProtect™ Relocatable to 480 Different Addresses Standard Mode IBM PC/XT®, PC/AT®, and PS/2™ Compatible Bidirectional ParallelPort Enhanced Mode Enhanced Parallel Port (EPP) Compatible EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant) High Speed Mode Microsoft and Hewlett Packard Extended Capabilities Port (ECP) Compatible (IEEE 1284 Compliant) Incorporates ChiProtect™ Circuitry for Protection Against Damage Due to Printer Power-On 14 mA Output Drivers 128 Pin QFP Package 2 TABLE OF CONTENTS FEATURES ........................................................................................................................................... 1 GENERAL DESCRIPTION ................................................................................................................. 5 DESCRIPTION OF PIN FUNCTIONS............................................................................................... 7 BUFFER TYPE DESCRIPTIONS............................................................................... 10 GENERAL PURPOSE I/O PINS .......................................................................................................11 REFERENCE DOCUMENTS ............................................................................................................12 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 DATA TRANSFER COMMANDS ............................................................................... 53 CONTROL COMMANDS ........................................................................................... 62 SERIAL PORT (UART).......................................................................................................................69 INFRARED INTERFACE ........................................................................................... 85 PARALLEL PORT ...............................................................................................................................86 IBM XT/AT COMPATIBLE, BI-DIRECTIONAL AND EPP MODES ............................ 88 EXTENDED CAPABILITIES PARALLEL PORT.............................................................................94 OPERATION ............................................................................................................ 102 PARALLEL PORT FLOPPY DISK CONTROLLER ......................................................................107 POWER MANAGEMENT .................................................................................................................109 UART POWER MANAGEMENT .............................................................................. 113 PARALLEL PORT .................................................................................................... 113 INTERNAL PWRGOOD ........................................................................................... 113 32.768 KHZ STANDBY CLOCK OUTPUT ................................................................ 114 SERIAL IRQ .......................................................................................................................................115 BIOS BUFFER ...................................................................................................................................120 GENERAL PURPOSE I/O................................................................................................................121 DESCRIPTION......................................................................................................... 121 RUN STATE GPIO DATA REGISTER ACCESS...................................................... 122 GPIO CONFIGURATION ......................................................................................... 122 WATCH DOG TIMER .......................................................................................................................126 3 8042 KEYBOARD CONTROLLER DESCRIPTION .....................................................................128 SOFT POWER MANAGEMENT .....................................................................................................136 BUTTON OVERRIDE FEATURE ............................................................................. 139 ACPI/PME/SMI FEATURES ............................................................................................................141 ACPI FEATURES..................................................................................................... 141 PME SUPPORT ....................................................................................................... 143 ACPI, PME AND SMI REGISTERS ............................................................................... 143 EITHER EDGE TRIGGERED INTERRUPTS.............................................................................. 155 CONFIGURATION ............................................................................................................................157 SYSTEM ELEMENTS.................................................................................................... 10 CONFIGURATION SEQUENCE................................................................................ 10 CONFIGURATION REGISTERS .................................................................................. 162 OPERATIONAL DESCRIPTION .....................................................................................................199 MAXIMUM GUARANTEED RATINGS*.......................................................................... 199 DC ELECTRICAL CHARACTERISTICS ........................................................................ 199 AC TIMING............................................................................................................... 204 CAPACITIVE LOADING........................................................................................... 204 ECP PARALLEL PORT TIMING .............................................................................. 229 4 GENERAL DESCRIPTION The FDC37B72x incorporates a keyboard interface, SMSC's true CMOS 765B floppy disk controller, advanced digital data separator, 16 byte data FIFO, two 16C550 compatible UARTs, one Multi-Mode parallel port which includes ChiProtect circuitry plus EPP and ECP support, on-chip 12 mA AT bus drivers, and two floppy direct drive support, soft power management and SMI support and Intelligent Power Management including PME and SCI/ACPI 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 EPP and ECP. The FDC37B72x incorporates sophisticated power control circuitry (PCC) which includes support for keyboard, mouse, modem ring, power button support and other wake-up events. The PCC supports multiple low power down modes. The FDC37B72x provides features for compliance with the “Advanced Configuration and Power Interface S