Serial Ata (Sata) Interface; Hot-Plug Compatibility; Serial Ata Device Plug Connector Pin Definitions - Seagate Video 2.5 HDD Product Manual

4.0

Serial ATA (SATA) Interface

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

Hot-Plug Compatibility

Seagate Video 2.5 HDD 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
from the host after a hotplug event.
4.2

Serial ATA Device Plug Connector Pin Definitions

Table 10 summarizes the signals on the Serial ATA interface and power connectors. Refer to the
Table 10 Serial ATA Connector Pin Definitions
Segment Pin Function
S1 Ground
S2 A+
S3 A-
Signal S4 Ground
S5 B-
S6 B+
S7 Ground
Key and spacing separate signal and power segments
P1 V33
P2 V33
P3 V33
P4 Ground
P5 Ground
P6 Ground
P7 V5
Power P8 V5
P9 V5
P10 Ground
P11 Ground or LED signal
P12 Ground
P13 V12
P14 V12
P15 V12
Notes
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.
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 ) must be terminated.
x
Seagate Video 2.5 HDD Product Manual, Rev. J (Draft 1)
Definition
2nd mate
Differential signal pair A from Phy
2nd mate
Differential signal pair B from Phy
2nd mate
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
If grounded, drive does not use deferred spin
1st mate
12V power, pre-charge, 2nd mate
12V power
12V power
. This device requires a COMRESET
www.serialata.org
Notes below.
21