ADLINK ASD25-SLC Series - Manual (Page 15)

User's Manual 15
Power Connector:
Name Type Description
P1 V33 3.3V Power
P2 V33 3.3V Power
P3 V33 3.3V Power, Pre‐change
P4 GND
P5 GND
P6 GND
P7 V5 5V Power, Pre‐change
P8 V5 5V Power
P9 V5 5V Power
P10 GND
P11 DAS/DSS
Device Activity Signal / Disable Staggered
Spinup
P12 GND
P13 V12 12V Power, Pre‐change
P14 V12 12V Power
P15 V12 12V Power
Table 14: Serial ATA Power Connector Pin Definitions
Note:
1. All pins are in a signal row, with a 1.27mm (0.05”) pitch
2. Pins P1, P2 and P3 are connected together, although they are not connected internally to
the device. The host may put 3.3v on these pins.
3. The mating sequence is
- The ground pins P4‐P6, P10, P12 and the 5V power pin P7
- The signal pins and the rest of the 5V power pins P8‐P9
4. Ground connectors P4 and P12 may contact before the other 1st mate pins in both the
power and signal connectors to discharge ESD in a suitably configured backplane connector.
5. Power pins P7, P8 and P9 are internally connected to one another within the device.
6. The host may ground P11 if it is not used for Device Activity Signal (DAS)
7. Pins P13, P14, P15 are connected together, although they are not connected internally to
the device.