Datasheet

Z5K500 OEM Specifications
37
7.3 Signal 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
Spinup
1
Note 1
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 hard disk drive to provide the host with an activity indication and by the host to
indicate whether staggered spin-up should be used.
The signal the hard disk 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 system (floating), the hard disk drive shall enable
staggered spin-up.
7.3.1 TX+ / TX-
These signal are the outbound high-speed differential signals that are connected to the serial ATA cable
7.3.2 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 1.0a 7-January -2003