S
EAGATE
L
APTOP
SSHD P
RODUCT
M
ANUAL
, R
EV
. B
15
4.0
S
ERIAL
ATA (SATA) I
NTERFACE
These drives use the industry-standard Serial ATA interface that supports FIS data transfers. It supports ATA programmed input/output
(PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–6. The drive also supports the use of the IORDY signal to provide
reliable high-speed data transfers.
For detailed information about the Serial ATA interface, refer to the
Serial ATA: High Speed Serialized AT Attachment
specification.
4.1
H
OT
-P
LUG
C
OMPATIBILITY
Seagate Laptop SSHD drives incorporate connectors which enable you to hot plug these drives in accordance with the Serial ATA: High
Speed Serialized AT Attachment specification revision 2.0. This specification can be downloaded from
www.serialata.org
. This device
requires a COMRESET from the host after a hotplug event.
4.2
S
ERIAL
ATA D
EVICE
P
LUG
C
ONNECTOR
P
IN
D
EFINITIONS
Table 8
summarizes the signals on the Serial ATA interface and power connectors. Refer to the
Notes
below.
N
OTES
1
All pins are in a single row, with a 1.27 mm (0.050 in) 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.
Table 8
Serial ATA Connector Pin Definitions
S
EGMENT
P
IN
F
UNCTION
D
EFINITION
S
IGNAL
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
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
