Datasheet

Datasheet 06/04/2012
PSFEM2XXXGXXXX Viking Technology
Revision A2 Page 21 of 46
www.vikingtechnology.com
Pin # Type Description
P31 -A Host Transmitter Differential Signal Pair
P32 Two Wire Interface Two Wire Interface Data
3
P33 +A Host Transmitter Differential Signal Pair
P34 GND Return Current Path
P35 GND Return Current Path
P36 Reserved No Connect
P37 GND Return Current Path
P38 Reserved No Connect
P39 +3.3V 3.3V Source
P40 GND Return Current Path
P41 +3.3V 3.3V Source
P42 Reserved No Connect
P43 GND Return Current Path
P44 Reserved No Connect
P45 Vendor Vendor Specific / Manufacturing Pin
2
P46 Reserved No Connect
P47 Vendor Vendor Specific / Manufacturing Pin
2
Reserved No Connect Reserved
P49 DA/DSS
Device Activity Signal / Disable Staggered Spin-
up
P50 GND Return Current Path
P51 Presence Detection Shall be pulled to GND by device
1
P52 +3.3V 3.3V Source
Notes:
1. Presence detection pin provided for tamper proof functionality
2. No connect on the host side.
3. Pins 30 and 32 are intended for use as a two wire interface to read a memory device to determine device
information (an example of this would be for use as SMB bus pins). These pins are not designed to be
active in conjunction with the SATA signal differential pairs.
4.2 Hot Plug Support
Hot Plug insertion and removal are supported in the presence of a proper
connector and appropriate operating system (OS) support as described in the
SATA 3.0 specification. This product supports Asynchronous Signal Recovery
and will issue an unsolicited COMINIT when first mated with a powered
connector to guarantee reliable detection by a host system without hardware
device detection.