Expansion Slots; Table C-9 Narrow Scsi Pinouts (Continued - Digital Equipment AlphaStation 500 Series User Information

Technical Specifications

Table C-9 Narrow SCSI Pinouts (Continued)

Signal Name
GROUND
GROUND
GROUND
GROUND
OPEN
OPEN
RESERVED
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND

Expansion Slots

The system board contains one 64-bit PCI (full length), three 32-bit PCI (one full length,
two half length). The maximum available +5V DC allowable to any expansion slot
depends on the following parameters:
•
Power supply capacity
•
The +5V DC requirements of the system board
•
The +5V DC requirements of the peripherals
•
The power demands of all other slots in use and of the system board
C-8 AlphaStation 500 Series User Information
Connect Cable
or Conductor
Contact Number
Number
15 15 16
17 17 18
19 19 20
21 21 22
23 23 24
25 25 26
27 27 28
29 29 30
31 31 32
33 33 34
35 35 36
37 37 38
39 39 40
41 41 42
43 43 44
45 45 46
47 47 48
49 49 50
Connector Signal Name
Contact
Number
16 -DB(7)
18 -DB(P)
20 GROUND
22 GROUND
24 OPEN
26 TERMPWR
28 RESERVED
30 GROUND
32 -ATN
34 GROUND
36 -BSY
38 -ACK
40 -RST
42 -MSG
44 -SEL
46 -C/D
48 -REQ
50 -I/O