Advanced Fast Scsi-2 Implementation; Host Adapter Performance - Adaptec AVA-2822 User Manual

SCSI
Up to 10.0 MBytes/sec synchronous Fast SCSI data rate
Up to 5.0 MBytes/sec synchronous SCSI data rate
Up to 3.0 MBytes/sec asynchronous SCSI data rate
Standard IDE or EIDE (AVA-2825 only)
3.3 MBytes/sec standard IDE data transfer rate
5.0, 8.3, 11.1, or 16.0 MBytes/sec EIDE data transfer rate
depending on PIO Mode (must have an EIDE drive that sup-
ports the transfer rate, and FLEXI-Driver software must be
installed)

Advanced Fast SCSI-2 Implementation

Concurrent support for Fast SCSI, synchronous, and
asynchronous devices
Uses the superior SCSI-2 external high-density connector and
standard internal ribbon connector
Programmable single-ended active SCSI termination
Multiple LUN support
Parity handling in Data, Message, Command, Status, and
Selection/Reselection phases

Host Adapter Performance

Minimal SCSI overhead in single-tasking environments
Disconnect/reconnect feature allows host to perform other
I/O tasks while the disconnected device is busy
Programmable interrupts
32-bit host bus data transfer widths
Programmable command active and recovery times to opti-
mize data transfer rates for standard IDE or EIDE drives on the
AVA-2825
Supports 16-KByte and 32-KByte BIOS through bank switching
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AVA-2820/2822/2825 User's Guide
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Stock Number: 510609-00, Rev. B
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Current Date: 1/30/95
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Page: 1-7
ECN Date: 1/31/95
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Introduction
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