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LD25 Series 5400.2 Product Manual, Rev. C
4.1 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.
4.1.1 Hot-Plug compatibility
LD25 Series SATA 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 http://www.serialata.com.
4.1.2 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 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