Travelstar 5K160 (SATA) Hard Disk Drive Specification

7.3Signal definitions

The pin assignments of interface signals are listed as follows:

 

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

DAS/DSS

Device Activity Signal / Disable Staggered

Note 1

 

 

 

 

Spinup1

 

 

 

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 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.

7.3.1TX+ / TX-

These signal are the outbound high-speed differential signals that are connected to the serial ATA cable

7.3.2RX+ / 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 1.0a 7-January -2003

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Hitachi HTS541640J9SA00, HTS541680J9SA00 Signal definitions, 1 TX+ / TX, 2 RX+ / RX, Plug Connector pin definition Signal

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