www.seagate.com
4.0 Serial ATA Interface
These drives use the industry-standard Serial ATA (SATA) interface that supports FIS data transfers. It supports
ATA programmed input/output (PIO) modes 0 to 4; multiword DMA modes 0 to 2, and Ultra DMA modes 0 to 6.
For detailed information about the Serial ATA interface, refer to the "Serial ATA: High Speed Serialized AT
Attachment" specification.
4.1 Hot-Plug compatibility
Pipeline HD drives incorporate connectors which enable you to hot plug these drives in accordance with the
Serial ATA Revision 2.5 specification. This specification can be downloaded from www.serialata.org.
4.2 Serial ATA device plug connector pin definitions
summarizes the signals on the Serial ATA interface and power connectors.
Table 5
Table 5 Serial ATA connector pin definitions
Segment Pin
Function
S1
Ground
S2
A+
S3
A-
S4
Ground
Signal
S5
B-
S6
B+
S7
Ground
P1
V
33
P2
V
33
P3
V
33
P4
Ground
P5
Ground
P6
Ground
P7
V
5
P8
V
Power
5
P9
V
5
P10
Ground
P11
Ground or LED signal If grounded, drive does not use deferred spin
P12
Ground
P13
V
12
P14
V
12
P15
V
12
Pipeline HD Product Manual, Rev. A
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
1st mate.
12V power, pre-charge, 2nd mate
12V power
12V power
21
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