SCSI接口单端信号方式
SCSI 是 Small Computer System Interface 的缩写，外置式 50 针接口的外观为母插座：
|
SCSI接口单端信号方式引脚定义 |
|
Pin |
Name |
Dir |
Description |
|---|---|---|---|
|
1-25 |
GND |
|
Ground |
|
26 |
DB0 |
|
Data Bus 0 |
|
27 |
DB1 |
|
Data Bus 1 |
|
28 |
DB2 |
|
Data Bus 2 |
|
29 |
DB3 |
|
Data Bus 3 |
|
30 |
DB4 |
|
Data Bus 4 |
|
31 |
DB5 |
|
Data Bus 5 |
|
32 |
DB6 |
|
Data Bus 6 |
|
33 |
DB7 |
|
Data Bus 7 |
|
34 |
PARITY |
|
Data Parity (odd Parity) |
|
35 |
GND |
Ground |
|
|
36 |
GND |
|
Ground |
|
37 |
GND |
|
Ground |
|
38 |
TMPWR |
|
Termination Power |
|
39 |
GND |
|
Ground |
|
40 |
GND |
|
Ground |
|
41 |
/ATN |
|
Attention |
|
42 |
n/c |
- |
Not connected |
|
43 |
/BSY |
|
Busy |
|
44 |
/ACK |
|
Acknowledge |
|
45 |
/RST |
|
Reset |
|
46 |
/MSG |
|
Message |
|
47 |
/SEL |
|
Select |
|
48 |
/C/D |
|
Control/Data |
|
49 |
/REQ |
|
Request |
|
50 |
/I/O |
|
Input/Output |