Seagate ST9250610NS Constellation SAS Product Manual - Page 66
Activity LED
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12.4.2 Physical characteristics This section defines physical interface connector. 12.4.3 Connector requirements Contact your preferred connector manufacturer for mating part information. Part numbers for SAS connectors will be provided in a future revision of this publication when production parts are available from major connector manufacturers. The SAS device connector is illustrated in Figures 11 and 12. 12.4.4 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. 12.4.5 Pin descriptions This section provides a pin-out of the SAS device and a description of the functions provided by the pins. Table 11: SAS pin descriptions Pin Signal name Signal type S1 Port A Ground S2* +Port A_in Diff. input pair S3* -Port A_in S4 Port A Ground S5* -Port A_out Diff output pair S6* +Port A_out S7 Port A Ground S8 Port B Ground S9* +Port B_in Diff. input pair S10* -Port B_in S11 Port A Ground S12* -Port B_out Diff output pair S13* +Port B_out S14 Port B Ground * - Short pin to support hot plugging NC - No connection in the drive. Pin Signal name Signal type P1* NC (reserved 3.3Volts) P2* NC (reserved 3.3Volts) P3 NC (reserved 3.3Volts) P4 Ground P5 Ground P6 Ground P7 5 Volts charge P8* 5 Volts P9* 5 Volts P10 Ground P11* Ready LED Open collector out P12 Ground P13 12 Volts charge P14* 12 Volts P15* 12 Volts 58 Constellation SAS Product Manual, Rev. F