内置SCSI卡接口(差分信号方式)


SCSI 是 Small Computer System Interface 的缩写,在控制器和设备侧的接口外观为 50 针公插座:

50 PIN IDC MALE

连接电缆为 50 针母插头:

50 PIN IDC FEMALE

引脚定义


Pin

Name

Dir

Description

01

GND

---

Ground

02

GND

---

Ground

03

+DB0

<->

+Data Bus 0

04

-DB0

<->

-Data Bus 0

05

+DB1

<->

+Data Bus 1

06

-DB1

<->

-Data Bus 1

07

+DB2

<->

+Data Bus 2

08

-DB2

<->

-Data Bus 2

09

+DB3

<->

+Data Bus 3

10

-DB3

<->

-Data Bus 3

11

+DB4

<->

+Data Bus 4

12

-DB4

<->

-Data Bus 4

13

+DB5

<->

+Data Bus 5

14

-DB5

<->

-Data Bus 5

15

+DB6

<->

+Data Bus 6

16

-DB6

<->

-Data Bus 6

17

+DB7

<->

+Data Bus 7

18

-DB7

<->

-Data Bus Parity7

19

+DBP

<->

+Data Bus Parity (odd Parity)

20

-DBP

<->

-Data Bus Parity (odd Parity)

21

DIFFSENS

?

???

22

GND

---

Ground

23

res

-

Reserved

24

res

-

Reserved

25

TERMPWR

<->

Termination Power

26

TERMPWR

<->

Termination Power

27

res

-

Reserved

28

res

-

Reserved

29

+ATN

<--

+Attention

30

-ATN

<--

-Attention

31

GND

---

Ground

32

GND

---

Ground

33

+BSY

<->

+Bus is busy

34

-BSY

<->

-Bus is busy

35

+ACK

<--

+Acknowledge

36

-ACK

<--

-Acknowledge

37

+RST

<->

+Reset

38

-RST

<->

-Reset

39

+MSG

-->

+Message

40

-MSG

-->

-Message

41

+SEL

<->

+Select

42

-SEL

<->

-Select

43

+C/D

-->

+Control or Data

44

-C/D

-->

-Control or Data

45

+REQ

-->

+Request

46

-REQ

-->

-Request

47

+I/O

-->

+In/Out

48

-I/O

-->

-In/Out

49

GND

---

Ground

50

GND

---

Ground


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