Serial Ata Device Plug Connector Pin Definitions - Seagate Momentus XT Product Manual

4.2

Serial ATA device plug connector pin definitions

Table 7 summarizes the signals on the Serial ATA interface and power connectors..
Table 7: Serial ATA connector pin definitions
Segment Pin Function
S1 Ground
S2 A+
S3 A-
S4 Ground
S5 B-
S6 B+
Signal
S7 Ground
P1 V
33
P2 V
33
P3 V
33
P4 Ground
P5 Ground
P6 Ground
P7 V
5
P8 V
5
Power
P9 V
5
P10 Ground
P11 Reserved
P12 Ground
P13 V
12
P14 V
12
P15 V
12
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
Momentus XT Product Manual, Rev. B
Definition
2nd mate
Differential signal pair A from Phy
2nd mate
Differential signal pair B from Phy
2nd mate
Key and spacing separate signal and power segments
3.3V power
3.3V power
3.3V power, pre-charge, 2nd mate
1st mate
2nd mate
2nd mate
5V power, pre-charge, 2nd mate
5V power
5V power
2nd mate
The pin corresponding to P11 in the backplane receptacle connector is also reserved
The corresponding pin to be mated with P11 in the power cable receptacle connector
shall always be grounded
1st mate.
12V power, pre-charge, 2nd mate
12V power
12V power
) must be terminated.
x
23