SCSI接口定义图(25针外置)

SCSI接口定义图(25针外置)

SCSI 是 Small Computer System Interface 的缩写，外置式 25 针接口为扫描仪等低速设备使用，接口外观为母插座：

连接电缆插头为 25 针公插头：

 

引脚定义

Pin	Name	Dir	Description
1	GND		Ground
2	DB1		Data Bus 1
3	DB3		Data Bus 3
4	DB5		Data Bus 5
5	DB7		Data Bus 7
6	GND		Ground
7	/SEL		Select
8	GND		Ground
9	TMPWR		Termination Power
10	/RST		Reset
11	C/D		Control/Data
12	I/O		Input/Output
13	GND		Ground
14	DB0		Data Bus 0
15	DB2		Data Bus 2
16	DB4		Data Bus 4
17	DB6		Data Bus 6
18	PARITY		Data Parity
19	GND		Ground
20	/ATN		Attention
21	/MSG		Message
22	/ACK		Acknowledge
23	BSY		Busy
24	/REQ		Request
25	GND		Ground