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Deskstar 7K400 Hard Disk Drive Specification
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6.4 Interface logic signal levels (PATA model)
The interface logic signals have the following electrical specifications:
6.4.1 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 connec-
tor pin and signal name.
Inputs
Input High Voltage
Input Low Voltage
2.0 V min
–0.8 V max.
Outputs:
Output High Voltage
Output Low Voltage
2.4 V min.
0.5 V max.
Table 19: Interface connector pins and I/O signals
No.
Plug Connector pin definition
Signal
I/O
S1
GND
2nd mate
Gnd
S2
A+
Differential signal A from Phy
RX+
Input
S3
A-
RX-
Input
Signal
S4
Gnd
2nd mate
Gnd
S5
B-
Differential signal B from Phy
TX-
Output
S6
B+
TX+
Output
S7
Gnd
2nd mate
Gnd
Key and spacing separate signal and power
segments
P1
V33
3.3V power
3.3V
P2
V33
3.3V power
3.3V
P3
V33
3.3V power, pre-charge, 2nd Mate
3.3V
P4
Gnd
1st mate
Gnd
P5
Gnd
2nd mate
Gnd
P6
Gnd
2nd mate
Gnd
P7
V5
5V power,pre-charge,2nd Mate
5V
P8
V5
5V power
5V
Power
P9
V5
5V power
5V
P10
Gnd
2nd mate
Gnd
P11
Reserved
1. This pin corresponding to P11 in
thebackplane receptacle connector is also
reserved
2. The corresponding pin to be mated with P11
in the power cable receptacle connector shall
always be grounded
Reserve
P12
Gnd
1st mate
Gnd
P13
V12
12V power,pre-chage,2nd mate
V12
P14
V12
12V power
V12
P15
V12
12V power
V12
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