Signal Definitions; Table 23. Interface Connector Pins And I/O Signals - Hitachi HTS542516K9SA00 Specifications

7.3

Signal definitions

The pin assignments of interface signals are listed as follows:
No.
S1 GND
S2 A+
S3 A-
Signal S4 Gnd
S5 B-
S6 B+
S7 Gnd
P1 V33
P2 V33
P3 V33
P4 Gnd
P5 Gnd
P6 Gnd
P7 V5
P8 V5
Power P9 V5
P10 Gnd
P11 DAS/DSS
P12 Gnd
P13 V12
P14 V12
P15 V12

Table 23. Interface connector pins and I/O signals

Note 1;
Pin P11 is used by the drive to provide the host with an activity indication and by the host to
indicate whether staggered spinup should be used.
The signal the drive provides for activity indication is a low-voltage low-current driver.
If pin P11 is asserted low the drive shall disable staggered spin-up and immediately initiate
spin-up. If pin P11 is not connected in the host (floating), the drive shall enable staggered spin-up.
TX+ / TX-
7.3.1
These signal are the outbound high-speed differential signals that are connected to the serial ATA
cable
RX+ / RX-
7.3.2
These signals are the inbound high-speed differential signals that are connected to the serial ATA
cable.
The following standard shall be referenced about signal specifications.
Serial ATA: High Speed Serialized AT Attachment Revision 1.0a 7-January -2003
Plug Connector pin definition
2nd mate
Differential signal A from Phy
2nd mate
Differential signal 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
Device Activity Signal / Disable Staggered
Spinup
1
1st mate
12V power,pre-chage,2nd mate
12V power
12V power
Page 39 of 171
5K250 SATA OEM Specification
Signal I/O
Gnd
RX+ Input
RX- Input
Gnd
TX- Output
TX+ Output
Gnd
3.3V
3.3V
3.3V
Gnd
Gnd
Gnd
5V
5V
5V
Gnd
Note 1
Gnd
V12
V12
V12