SCSI BUS

7.3 Physical Requirements

SCSI devices are daisy-chained together. Both ends of the interface cable are terminated with resistors.

7.3.1 Interface connector

The nonshielded SCSI connector installed on the ODD is a 50-conductor connector consisting of two rows of 25 male pins with adjacent pins 2.54 mm (0.1 in.) apart. See Figure 7.4.

The nonshielded cable connector shall be a 50-conductor connector consisting of two rows of 25 female contacts with adjacent contacts 2.54 mm (0.1 in.) apart. The use of keyed connectors is recommended to prevent accidental misinsertion. See Figure 7.5.

Figure 7.6 shows the nonshielded connector pin assignments for SCSI.

Symbol

mm

Remark

 

 

 

D1

2.54

————

 

 

 

D2

2.54

————

 

 

 

D3

5.08

————

 

 

 

D4

6.25

————

 

 

 

Note: The tolerance is ± 0.127 mm unless otherwise specified.

Figure 7.4 SCSI interface connector (ODD side)

7-6

C156-E228-02EN

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Fujitsu MCP3064SS, MCM3064SS, MCP3130SS, MCM3130SS manual Physical Requirements, Interface connector