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HP A6829A PCI Dual Channel Ultra160 SCSI Host Bus Adapter: Service and User Guide > Chapter 1 HP A6829A Adapter Overview

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The A6829A adapter and its driver conform to the ANSI T10 SCSI Parallel Interace-3 (SPI-3) standard.

The A6829A adapter has the following features:

  • PCI interface

    • Full 64-bit (66 MHz) Direct Memory Access (DMA) bus master.

    • Zero wait-state bus master data bursts.

    • PCI Universal 3.3 V/5 V bus support.

    • Compliance with PCI Local Bus Specification, Revision 2.2.

  • SCSI interface

    • Two separate SCSI channels.

    • 16-bit (Wide) Single Ended (SE)/Low Voltage Differential (LVD).

    • Enabling/disabling of on-board termination, with hardware override (using jumpers).

    • 68-pin Very High Density Cable Interconnect (VHDCI) connector for each of the two external channels.

    • 68-pin High Density connector for each of the two internal channels (not supported on HP-UX systems).

    • Maximum data transfer rate of 160 MBytes/s per channel, with a maximum cable length of 12 meters (with multiple SCSI devices) and a maximum 15 SCSI devices per channel (not including the A6829A adapter).

    • Fast, Ultra, Ultra2, and Ultra160 data transfer capability.

    • SCSI termination power (TERMPWR) source with auto-resetting circuit breaker.

    • Flash EEPROM configured with HP part number (allows easy identification through the ioscan command).

  • HBA characteristics

    • PCI4X adapter (66MHz, 64-bit data transfers).

    • PCI board dimensions: approximately 8.95 inches x 4.25 inches.

    • Universal 64-bit PCI card edge connector.

    • Four SCSI connectors:

      • Two external 68-pin Very High Density Cable Interconnect (VHDCI)—J2 and J3, one for each channel.

      • Two internal 68-pin High Density (HD)—J4 and J6, one for each channel. Note that the internal HD connectors are not supported on HP-UX systems.

    • ISA/EISA bracket.

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