11.4.2 Physical characteristics

This section defines physical interface connector.

11.4.3 Connector requirements

The SAS connector on the drive complies with SFF-8482. Contact your preferred connector manufacturer for mating part information.

The SAS device connector is illustrated in Figures 13 and 14.

11.4.4 Electrical description

SAS drives use the device connector for:

DC power

SAS interface

Activity LED

This connector is designed to either plug directly into a backpanel or accept cables.

11.4.5 Pin descriptions

This section provides a pin-out of the SAS device and a description of the functions provided by the pins.

Table 13 SAS pin descriptions

PIN

SIGNAL NAME

SIGNAL TYPE

 

PIN

SIGNAL NAME

SIGNAL TYPE

 

 

 

 

 

 

 

S1

Port A Ground

 

 

P1*

NC (reserved 3.3Volts)

 

 

 

 

 

 

 

 

S2*

+Port A_in

Diff. input pair

 

P2*

NC (reserved 3.3Volts)

 

 

 

 

 

 

 

 

S3*

-Port A_in

 

 

P3

NC (reserved 3.3Volts)

 

 

 

 

 

 

 

 

S4

Port A Ground

 

 

P4

Ground

 

 

 

 

 

 

 

 

S5*

-Port A_out

Diff output pair

 

P5

Ground

 

 

 

 

 

 

 

 

S6*

+Port A_out

 

 

P6

Ground

 

 

 

 

 

 

 

 

S7

Port A Ground

 

 

P7

5 Volts charge

 

 

 

 

 

 

 

 

S8

Port B Ground

 

 

P8*

5 Volts

 

 

 

 

 

 

 

 

S9*

+Port B_in

Diff. input pair

 

P9*

5 Volts

 

 

 

 

 

 

 

 

S10*

-Port B_in

 

 

P10

Ground

 

 

 

 

 

 

 

 

S11

Port A Ground

 

 

P11*

Ready LED

Open collector out

 

 

 

 

 

 

 

S12*

-Port B_out

Diff output pair

 

P12

Ground

 

 

 

 

 

 

 

 

S13*

+Port B_out

 

 

P13

12 Volts charge

 

 

 

 

 

 

 

 

S14

Port B Ground

 

 

P14*

12 Volts

 

 

 

 

 

 

 

 

 

 

 

 

P15*

12 Volts

 

 

 

 

 

 

 

 

*- Short pin to support hot plugging NC - No connection in the drive.

CHEETAH 15K.7 SAS PRODUCT MANUAL, REV. F

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Seagate ST3450757SS, 100516226 Physical characteristics, Connector requirements, Electrical description, Pin descriptions