Seagate ST3250823SCE Manuel D’Utilisation

22

DB35 Serial ATA Product Manual, Rev. E

Table 5 summarizes the signals on the Serial ATA interface and power connectors..

1.

All pins are in a single row, with a 1.27 mm (0.050”) pitch.

2.

The comments on the mating sequence apply to the case of backplane blindmate connector only. In this 
case, the mating sequences are:

• the ground pins P4 and P12.

• the pre-charge power pins and the other ground pins.

• the signal pins and the rest of the power pins.

3.

There are three power pins for each voltage. One pin from each voltage is used for pre-charge when 
installed in a blind-mate backplane configuration.

4.

All used voltage pins (V

x

) must be terminated.

S1

Ground

2nd mate

S2

A+

Differential signal pair A from Phy

S3

A-

S4

Ground

2nd mate

S5

B-

Differential signal pair B from Phy

S6

B+

S7

Ground

2nd mate

Key and spacing separate signal and power segments

P1

V

33

3.3V power

P2

V

33

3.3V power

P3

V

33

3.3V power, pre-charge, 2nd mate

P4

Ground

1st mate

P5

Ground

2nd mate

P6

Ground

2nd mate

P7

V

5

5V power, pre-charge, 2nd mate

P8

V

5

5V power

P9

V

5

5V power

P10

Ground

2nd mate

P11

Ground or LED signal

If grounded, drive does not use deferred spin

P12

Ground

1st mate.

P13

V

12

12V power, pre-charge, 2nd mate

P14

V

12

12V power

P15

V

12

12V power