Interface Logic Signal Levels (Pata Model); Signal Definition (Sata Model); Tx+ / Tx - Hitachi HTS542525K9SA00 Specifications

6.4 Interface logic signal levels (pata model)

The interface logic signals have the following electrical specification:
Inputs
Outputs:

6.5 Signal definition (SATA model)

SATA has receivers and drivers to be connected to Tx+/- and Rx +/- Serial data signal.
defines the signal names of I/O connector pin and signal name.
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 Reserved
P12 Gnd
P13 V12
P14 V12
P15 V12

6.5.1 TX+ / TX-

These signal are the outbound high-speed differrential signals that are connected to the serial ATA cable.
Input High Voltage
Input Low Voltage
Output High Voltage
Output Low Voltage
Plug Connector pin definition
Differential signal A from Phy
Differential signal B from Phy
Key and spacing separate signal and power segments
3.3V power
3.3V power
3.3V power, pre-charge, 2nd Mate
5V power,pre-charge,2nd Mate
This pin can be used for LED activity and staggered
Spin up. It is controlled by firmware.
12V power,pre-chage,2nd mate
12V power
12V power
Deskstar 7K160 Hard Disk Drive Specification
2.0 V min
0.8 V max.
2.4 V min.
0.5 V max.
2nd mate
2nd mate
2nd mate
1st mate
2nd mate
2nd mate
5V power
5V power
2nd mate
1st mate
27
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
Reserve
Gnd
V12
V12
V12