Seagate Barracuda XT Barracuda XT Series SATA Product Manual - Page 27

SATA Interface, 4.1 Hot-Plug compatibility, 4.2 Serial ATA device plug connector pin definitions

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4.0 SATA 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 Barracuda drives incorporate connectors which enable you to hot plug these drives in accordance with the Serial ATA Revision 2.6 specification. This specification can be downloaded from www.serialata.org. 4.2 Serial ATA device plug connector pin definitions Table 6 summarizes the signals on the Serial ATA interface and power connectors. Table 6 Serial ATA connector pin definitions Segment Pin S1 S2 S3 S4 S5 S6 Signal S7 Function Ground A+ AGround BB+ Ground Definition 2nd mate Differential signal pair A from Phy 2nd mate Differential signal pair B from Phy 2nd mate Power P1 V33 Key and spacing separate signal and power segments 3.3V power Barracuda XT SATA Product Manual, Rev. D 27

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Barracuda XT SATA Product Manual, Rev. D
27
4.0
SA
T
A 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
Barracuda
drives incorporate connectors which enable you to hot plug these drives in accordance with the Serial
ATA Revision 2.6 specification. This specification can be downloaded from www.serialata.org.
4.2
Serial ATA device plug connector pin definitions
Table 6
summarizes the signals on the Serial ATA interface and power connectors.
Table 6
Serial ATA connector pin definitions
Segment
Pin
Function
Definition
Signal
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
Power
P1
V
33
3.3V power