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EXPRESSPCI-PSC

ATTO TECHNOLOGY, INC.

EXPRESSPCI-PSC

Card Type

Hard drive controller card

Processor

RISC

Hard Drives supported

Up to 15 Ultra/Wide SCSI devices

Floppy drives supported

None

Data Bus

32-bit PCI

Card Size

Half-length, full-height card

RAID levels supported

0

CONNECTIONS

Function

Location

Function

Location

50-pin SCSI connector - internal

J1

4-pin connector - drive active LED

J3

68-pin SCSI connector - external

J2

68-pin SCSI connector - internal

J4

TERMINATION LEDS

LED

Color

Status

Condition

LED1

Unidentified

On

Low order byte on SCSI channel terminated

LED1

Unidentified

Off

Low order byte not terminated

LED2

Unidentified

On

High-order byte on SCSI channel terminated

LED2

Unidentified

Off

High order byte not terminated

Note: The ExpressPCI-PSC automatically configures its own termination and provides feed back via two LEDs located on the top edge of the card. Exceptions to automatic configuration are listed in the Miscellaneous Technical Notes table.

MISCELLANEOUS TECHNICAL NOTES

Only two SCSI connectors (J1&J2, J2&J3 or J3&J1) can be used simultaneously. All three SCSI connectors cannot be used at one time.

Termination must be manually configured under two conditions. The ExpressPCI-PSC will not automatically configure termination when narrow (8-bit) devices are attached to the internal connector and wide (16-bit) devices are attached to the external connector, or vice-versa. In these cases, the on-board terminators must be set to terminate high-order byte (the ExpressPCI-PSC must lies at the end of the high-order bus). Refer to the ExpressPro-Tools Bus Configuration Utilities section in the ExpressPro-Tools Userís Manual for appropriate settings. Active termination is strongly recommended.