Adaptec AHA-2740-T User Manual download pdf (Page 85)

Extended Industry-Standard Architecture

Interface

Table A-1. Standard EISA Bus Electronic and Physical Interface

Driver Output Signals

0 volts minimum 0.4 volts maximum

24 mA

2.4 volts minimum 5.25 volts maximum

8 mA

Receiver Input Signals

0.8 volts maximum

2.0 volts minimum

SCSI Interface

Electrical Interface

These are the specifications listed in ANSI X3.131-1986 for

single-ended operation.

Output Signals

All signals use open collector or three-state drivers. Each signal

driven by a SCSI device has the following output characteristics

when measured at the SCSI device’s connector:

Table A-2. Output Signals

Signal Definition Characteristics

Low-level output voltage 0.0 to 0.5 volts DC at 48 mA

sinking (signal assertion)

High-level output voltage 2.5 to 5.25 volts DC (signal

negation)

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page A-4)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

AHA-2740 Series User’s Manual

A-4

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 132 133

No comments

Adaptec AHA-2740-T User Manual Page 85