Intel AN430TX Product Specification - Page 16

Universal Serial Bus (USB) Support, 1.7.4 IDE Support - motherboard drivers

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AN430TX Motherboard Technical Product Specification • Real-Time Clock  256 byte battery-backed CMOS SRAM  Includes date alarm • 16-bit counters/timers based on 82C54 1.7.3 Universal Serial Bus (USB) Support The motherboard features two USB ports. The ports permit the direct connection of two USB peripherals without an external hub. If more devices are required, an external hub can be connected to either of the built-in ports. The motherboard fully supports the standard universal host controller interface (UHCI) and uses standard software drivers that are UHCI-compatible. Features of the USB include: • Self-identifying, hot pluggable peripherals • Automatic mapping of function to driver and configuration • Support for isochronous and asynchronous transfer types over the same set of wires • Support for up to 127 physical devices • Guaranteed bandwidth and low latencies appropriate for telephony, audio, and other applications • Error handling and fault recovery mechanisms built into protocol  NOTE Computers that have an unshielded cable attached to the USB port might not meet FCC Class B requirements, even if no device or a low speed (sub-channel) USB device is attached to the cable. Use shielded cable that meets the requirements for high speed (fully rated) devices. 1.7.4 IDE Support The motherboard has two independent bus mastering PCI IDE interfaces that support PIO Mode 3, PIO Mode 4, ATA-33 (Ultra DMA/33), and ATAPI (e.g., CD-ROM) devices. The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS) translation modes. IDE device transfer rate and translation mode are automatically detected by the BIOS. Normally, programmed I/O operations require a substantial amount of processor bandwidth; however, in true multi-tasking operating systems like Windows† 95, the bandwidth freed by bus mastering IDE can be devoted to other tasks while disk transfers are occurring. 1.7.4.1 LS-120 Support LS-120 MB Diskette technology enables users to store 120 MB of data on a single, 3.5-inch removable diskette. LS-120 technology is backward (both read and write) compatible with 1.44 MB and 720 KB DOS-formatted diskettes and is supported by Windows 95 and Windows NT† operating systems. The AN430TX motherboard allows connection of an LS-120 compatible drive and a standard 3.5-inch diskette drive. The LS-120 drive can be configured as a boot device, if selected in the BIOS setup utility. 16

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AN430TX Motherboard Technical Product Specification
16
•
Real-Time Clock
256 byte battery-backed CMOS SRAM
Includes date alarm
•
16-bit counters/timers based on 82C54
1.7.3
Universal Serial Bus (USB) Support
The motherboard features two USB ports.
The ports permit the direct connection of two USB
peripherals without an external hub.
If more devices are required, an external hub can be
connected to either of the built-in ports.
The motherboard fully supports the standard universal
host controller interface (UHCI) and uses standard software drivers that are UHCI-compatible.
Features of the USB include:
•
Self-identifying, hot pluggable peripherals
•
Automatic mapping of function to driver and configuration
•
Support for isochronous and asynchronous transfer types over the same set of wires
•
Support for up to 127 physical devices
•
Guaranteed bandwidth and low latencies appropriate for telephony, audio, and other
applications
•
Error handling and fault recovery mechanisms built into protocol
NOTE
Computers that have an unshielded cable attached to the USB port might not meet FCC Class B
requirements, even if no device or a low speed (sub-channel) USB device is attached to the cable.
Use shielded cable that meets the requirements for high speed (fully rated) devices.
1.7.4
IDE Support
The motherboard has two independent bus mastering PCI IDE interfaces that support PIO Mode 3,
PIO Mode 4, ATA-33 (Ultra DMA/33), and ATAPI (e.g., CD-ROM) devices.
The BIOS supports
Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS) translation modes.
IDE device transfer rate and translation mode are automatically detected by the BIOS.
Normally, programmed I/O operations require a substantial amount of processor bandwidth;
however, in true multi-tasking operating systems like Windows
†
95, the bandwidth freed by bus
mastering IDE can be devoted to other tasks while disk transfers are occurring.
1.7.4.1
LS-120 Support
LS-120 MB Diskette technology enables users to store 120 MB of data on a single, 3.5-inch
removable diskette.
LS-120 technology is backward (both read and write) compatible with
1.44 MB and 720 KB DOS-formatted diskettes and is supported by Windows 95 and Windows
NT
†
operating systems.
The AN430TX motherboard allows connection of an LS-120 compatible drive and a standard
3.5-inch diskette drive.
The LS-120 drive can be configured as a boot device, if selected in the
BIOS setup utility.