User manual

Hitachi hard disk drive specifications
25
6.1.2 Signal definition
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.
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
Support staggered spin-up and LED activity
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
Table 14 Interface connector pins and I/O signals
6.1.2.1 TX+ / TX-
These signal are the outbound high-speed differrential signals that are connected to the serial ATA cable
6.1.2.2 RX+ / RX-
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 2.6 15-Feb-2007