Scsi Implementation - Sun Microsystems Ultra 1 Series Reference Manual
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Also See for Ultra 1 Series:
- Service manual (218 pages) ,
- Installation manual (61 pages) ,
- Upgrade manual (50 pages)
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Note – All signals shown in Table 1-6 are active low.
TABLE 1-6
Pin
Level
1-25
GND
26
TTL
27
TTL
28
TTL
29
TTL
30
TTL
31
TTL
32
TTL
33
TTL
34
TTL
35-37
GND
38
TTL
39-40
GND
41
TTL
42
GND
43
TTL
44
TTL
45
TTL
46
TTL
47
TTL
48
TTL
49
TTL
50
TTL
1.7.1
SCSI Implementation
Single-ended
SCSI Connector Pinouts
Function
Ground
sd0
sd1
sd2
sd3
sd4
sd5
sd6
sd7
sdp
Ground
Termpower
atn
Ground
bsy
ack
rst
msg
sel
cd
req
io
I/O
Description
I&O
SCSI Data Bit 0
I&O
SCSI Data Bit 1
I&O
SCSI Data Bit 2
I&O
SCSI Data Bit 3
I&O
SCSI Data Bit 4
I&O
SCSI Data Bit 5
I&O
SCSI Data Bit 6
I&O
SCSI Data Bit 7
I&O
SCSI Data Parity
I&O
Termination
Voltage
O
Attention
O
Busy
O
Acknowledge
O
Reset
O
Message
O
Select
O
Control/Data
O
Request
O
Input/Output
Chapter 1
Back Panel Connectors
1-7
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