Black Box SW487A-R2 manual Signal Name

Page 42

CHAPTER 6: SCSI Technical Information

has the highest priority during the Arbitration phase. Bit number, significance, and priority decrease downward to DB0. A data bit is defined as a one when the signal value is true and as a zero when the signal value is false. Data parity DBP and DBP1 shall be odd.

Table 6-1. SCSI connector assignments for single-ended (SE)

16-bit SCSI (wide).

Signal Name

Pin Number

Signal Name

Pin Number

GROUND

1

-DB12

35

GROUND

2

-DB13

36

 

 

 

 

GROUND

3

-DB14

37

 

 

 

 

GROUND

4

-DB15

38

 

 

 

 

GROUND

5

-DBP1

39

 

 

 

 

GROUND

6

-DB0

40

 

 

 

 

GROUND

7

-DB1

41

 

 

 

 

GROUND

8

-DB2

42

 

 

 

 

GROUND

9

-DB3

43

 

 

 

 

GROUND

10

-DB4

44

 

 

 

 

GROUND

11

-DB5

45

 

 

 

 

GROUND

12

-DB6

46

 

 

 

 

GROUND

13

-DB7

47

 

 

 

 

GROUND

14

-DBP

48

 

 

 

 

GROUND

15

GROUND

49

 

 

 

 

GROUND

16

GROUND

50

 

 

 

 

TERMPWR

17

TERMPWR

51

 

 

 

 

TERMPWR

18

TERMPWR

52

 

 

 

 

RESERVED

19

RESERVED

53

 

 

 

 

GROUND

20

GROUND

54

 

 

 

 

GROUND

21

-ATN

55

 

 

 

 

GROUND

22

GROUND

56

 

 

 

 

GROUND

23

-BSY

57

 

 

 

 

GROUND

24

-ACK

58

 

 

 

 

GROUND

25

-RST

59

 

 

 

 

GROUND

26

-MSG

60

 

 

 

 

GROUND

27

-SEL

61

 

 

 

 

GROUND

28

-C/D

62

 

 

 

 

41

Image 42
Contents 4 Electronic Scsi Switch RADIO-FREQUENCY Interference Statements 4 Electronic Scsi Switch NOM Statement Trademarks Used in this Manual Contents 4 Electronic Scsi Switch Single-Ended SE Scsi SW487A-R2 Only SpecificationsScsi Interface Differential DE Scsi SW485A OnlyLAN Port Low-Voltage Differential LVD Scsi SW487A-R2 OnlySerial Interface Agency ApprovalsPhysical About the Scsi Switch FeaturesIntroduction Technical Description IntroductionGeneral Hardware Description Electronic Scsi Switch block diagram Typical switch installation Power Equipment Off InstallationSwitch Placement What’s IncludedScsi Interface Cabling RS-232 Serial Port CablingEthernet LAN Port Cabling Operator Controls and Indicators AC Power SwitchLCD Display, Keypad, and Indicators Indicators LCD Display Control Menus SET Serial Ports Display BUS Activity Scsi Switch Port Configuration Scsi Switch Default ConfigurationConfiguration and Operation Scsi Cable Interface RequirementsInternal Terminator Selection Selecting Internal Terminator Power Selecting External Terminator PowerSignal Description DB9 Pin DB25 Pin Serial-Port PinoutLAN/Serial-Port Commands Command Cmd Example Command String Response Expanded List of Commands 4 Electronic Scsi Switch Set Temperature Limit Ascii Character Reference for Scsi Switch Box Selection Graphical User Interface GUIConnecting Multiple Scsi Switches Rackmount InstallationTypical Applications Sample applicationsNetwork Control of Scsi Switch Apconcfg Utility Apconcmd Utility Scsi Technical Information Scsi BasicsScsi Installation Tips Scsi Technical InformationScsi Interface Signal Descriptions Signal Name Signal Signal Connector Name Name Pin Number HVD LVD Scsi Switch component placement Troubleshooting Calling Black BoxShipping and Packaging Disclaimers and Notices Copyright 2002. Black Box Corporation. All rights reserved