Intel 281809-003 manual IDE Support, National Semiconductor PC87306B Super I/O Controller

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IDE SUPPORT

The Advanced/RH motherboard provides two independent high performance bus-mastering PCI IDE interfaces capable of supporting PIO Mode 3 and Mode 4 devices. The system BIOS supports Cylinder Sector Head (CHS), Logical Block Addressing (LBA) and Extended Cylinder Sector Head (ECHS) translation modes as well as ATAPI (e.g. CD-ROM) devices on both IDE interfaces. IDE device transfer rate and translation mode capability can be automatically determined by the system BIOS.

Normally, programmed I/O operations require a substantial amount of CPU bandwidth. In multi-tasking operating systems like Microsoft Windows 95, the CPU bandwidth freed up by using bus mastering IDE can be used to complete other tasks while disk transfers are occurring. A driver is required for the IDE interface to operate as a PCI bus master capable of supporting PIO Mode 4 devices with transfer rates up to 22 MB/sec while minimizing the system demands upon the processor.

Detailed information on the PCIset is available in the Intel 82430HX PCIset data sheet.

NATIONAL SEMICONDUCTOR PC87306B SUPER I/O CONTROLLER

Control for the integrated serial ports, parallel port, floppy drive, RTC and keyboard controller is incorporated into a single component, the National Semiconductor PC87306B. This component provides:

∙Two NS16C550-compatible UARTs with send/receive 16 byte FIFO

— Support for an IrDA compliant Infra Red interface

∙Multi-mode bi-directional parallel port

— Standard mode; IBM † and Centronics† compatible

—Enhanced Parallel Port (EPP) with BIOS/Driver support

—High Speed mode; Extended Capabilities Port (ECP) compatible

∙Industry standard floppy controller with 16 byte data FIFO (2.88 MB floppy support)

∙Integrated Real Time Clock accurate within +/- 13 minutes/yr at 25º C and 5 volts when the system is continuously powered on

∙Integrated 8042 compatible keyboard controller

The PC87306B is normally configured by the BIOS automatically. However configuration of these interfaces is possible via the CMOS Setup program that can be invoked during boot-up. The serial ports can be enabled as COM1, COM2, IrDA, or disabled. The parallel port can be configured as normal, extended, EPP/ECP, or disabled. The floppy interface can be configured for 360 KB or 1.2 MB 5¼” media or for 720 KB, 1.2 MB, 1.44 MB, or 2.88 MB 3½” media. Header pins located near the back of the board allow cabling to use these interfaces

FLOPPY CONTROLLER

The PC87306B is software compatible with the DP8473 and 82077 floppy disk controllers. The floppy interface can be configured for 360 KB or 1.2 MB 5¼” media or for 720 KB, 1.2 MB, 1.44 MB, or 2.88 MB 3½” media in the BIOS setup. By default, the Floppy A interface is configured for 1.44 MB and Floppy B is disabled. Another setup option prevents the user from being able to write to floppy. Configuring the floppy interface for 1.2 MB 3 ½” (3-mode floppy) requires the use of a driver to operate correctly.

KEYBOARD INTERFACE

PS/2 keyboard/mouse connectors are located on the back panel side of the motherboard. The 5V lines to these connectors are protected with a PolySwitch† circuit which acts much like a self-healing fuse, re-establishing the connection after an over-current condition is removed. While this device eliminates the possibility of having to replace a fuse, care should be taken to turn off the system power before installing or removing a keyboard or mouse. The system BIOS can detect and correct keyboards and mice plugged into the wrong PS/2† style connector.

Advanced/RH Technical Product Specification ∙ Page 11

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Contents Advanced/RH Advanced/RH Technical Product Specification ∙ Table of Contents Motherboard Specifications Introduction Cache Subsystem Motherboard Manufacturing OptionsAudio Subsystem Video SubsystemDD − 256K L2 Pbsram Board Level FeaturesCPU LPX Form FactorEDO Dram Processor UpgradeSecond Level Cache System Memory82371SB PCI ISA IDE Xcelerator PIIX3 Expansion RiserPeripheral Component Interconnect PCI Pciset Keyboard Interface IDE SupportNational Semiconductor PC87306B Super I/O Controller Floppy ControllerGraphics Subsystem Real Time CLOCK, Cmos RAM and BatteryIrda INFRA-RED Support Parallel PortAudio Subsystem ATI-264VT Resolutions Supported by the MotherboardResolution Graphics Drivers and UtilitiesUniversal Serial BUS USB ConnectorsMotherboard Connectors Audio DriversPCI IDE CdromMidi Spkr SLP/PS-ON Hdled Pwrled RST FAN Power Supply Control J9H1,J9K2Front Panel Connections J3A1, J2A1 Sleep / Resume INFRA-RED Irda ConnectorReset SpeakerCD-ROM Audio Input Audio ConnectorsMIDI/AUDIO I/O Connector Advanced/RH Wave Table Upgrade module Wave Table UpgradeCOM Back Panel ConnectorsDC Voltage Acceptable tolerance Power ConsumptionSystem Configuration Graphics Memory Upgrade Appendix a − User-Installable UpgradesReal Time Clock Battery Replacement CPU UpgradeHardware Mpeg Module J6C2 Appendix B − Configuration Jumper SettingsRiser SetupFreq Mult CmosSetup J4L1 B Pins CPU Configuration Jumper Block J4L1C&DCmos -J4L1 a Pins Pswd -J4L1 a PinsDrive or Overdrive J6C2 Recovery Jumper J6C2Description Appendix C − Memory MapAddress Range SizeBit # Description Appendix D − I/O MapAddress hex Piix DMABus Number Dev Number hex Func. Number Description Appendix E − PCI Configuration Space MapData Width System Resource Appendix F − Interrupts & DMA ChannelsNMI System ResourcePCI 3.3V Power J9J1 not Populated Appendix G − ConnectorsPower Supply Primary Power J9H1Front PANEL−J3A1 Back Panel I/O Peripherals IDE Connectors J5C1 & J6C1Floppy Connector J9K1 Multimedia PCI / ISA Riser J6J2 Celp 2.1 Connector J1D1 System Address Appendix-H Motherboard BiosBios Upgrades Flash Memory ImplementationISA Plug ‘N’ Play Setup UtilityPCI AUTO-CONFIGURATION Advanced Power ManagementPCI IDE Boot OptionsSecurity Features Language SupportSetup Enable Jumper Appendix I − PCI Configuration Error Messages Beep Codes Appendix J− Amibios Error messages and Beep CodesError Messages Beeps Error MessageISA NMI Message OFF Board Parity Error Addr HEX =ISA NMI Messages Cmos Time and Date Not SetAppendix K − Soft-off Control Appendix L − Environmental Standards Motherboard SpecificationsParameter Condition Specification Appendix M − Reliability Data

281809-003 specifications

The Intel 281809-003 is a notable memory module developed by Intel, showcasing advanced features and technologies that cater to a variety of computing applications. As part of Intel's extensive range of semiconductor products, the 281809-003 exemplifies the company’s commitment to enhancing data storage and retrieval processes.

One of the key features of the Intel 281809-003 is its capacity, designed to support a significant amount of data for efficient computing tasks. The module delivers robust performance, with increased speed and reliability that meet the demands of modern computing environments. This memory module provides enhanced data transfer rates that facilitate quick access to frequently utilized data, reducing latency and improving overall system responsiveness.

The Intel 281809-003 utilizes dynamic random access memory (DRAM) technology, which is fundamental to its operation. DRAM is known for its ability to hold data temporarily while the device is powered on, making it ideal for applications that require rapid data processing, such as gaming, content creation, and complex simulations. The efficiency of the DRAM technology also plays a pivotal role in optimizing energy consumption, thus contributing to better performance-to-power ratios.

In terms of architecture, the Intel 281809-003 is built to integrate seamlessly with Intel platforms, ensuring compatibility and optimized performance with Intel's processors. The module employs advanced error-correcting code (ECC) technology, which helps detect and correct common types of data corruption, enhancing data integrity and system stability. This feature is particularly important for mission-critical applications where data consistency is crucial.

The Intel 281809-003 also offers scalability options, making it a suitable choice for a range of systems from entry-level desktops to high-performance servers. This versatility allows for easy upgrades, accommodating evolving user needs and technological advancements without requiring complete system overhauls.

Another significant characteristic of the Intel 281809-003 is its adherence to industry standards, including JEDEC specifications, which ensures that the module is reliable and widely supported across various hardware configurations. Additionally, its design includes considerations for heat dissipation, enhancing longevity and performance during extended use.

In summary, the Intel 281809-003 memory module stands out due to its impressive capacity, speed, ECC technology, and compatibility with Intel's ecosystems. By integrating advanced DRAM technologies and adhering to rigorous industry standards, the Intel 281809-003 represents a key component for users seeking reliable and efficient memory solutions in their computing endeavors.
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