All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: Looking for in depth documentation on SSD PCB pins
PostPosted: November 5th, 2018, 15:32 
Offline

Joined: November 5th, 2018, 15:19
Posts: 5
Location: antarctica
Is there any documentation on the pin and solder pads like the ones e.g. at the bottom here: https://cdn.transcend-info.com/products ... MSA230.png
This is just an example with lots of pins, I would be grateful for documentation on other models.


Top
 Profile  
 
 Post subject: Re: Looking for in depth documentation on SSD PCB pins
PostPosted: November 5th, 2018, 21:48 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 3167
Location: Adelaide, Australia
you will have to do research. look at things like:
-development boards for SSDs
-Schematics for devices
-search for SSD images, look on the images for ports that are silkscreened labelled on the PCB, then match up the port pins configuration with the subject and see if you can tell by testing that is is the same kind of port.
-use something like a JTAGulator to test possible JTAG ports
-try seeing if you can get serial output on possible serial ports
etc etc
Attachment:
Pp_MSA230.png
Pp_MSA230.png [ 160.01 KiB | Viewed 566 times ]


Top
 Profile  
 
 Post subject: Re: Looking for in depth documentation on SSD PCB pins
PostPosted: November 6th, 2018, 6:50 
Offline

Joined: November 5th, 2018, 15:19
Posts: 5
Location: antarctica
Thanks. Do you have any ideas of the golden solder blobs. Like on the top leftor next to the firmware update port. There are also lots of solder blobs (test points?) on msata ssd I have.Is there maybe something common across the different models?


Top
 Profile  
 
 Post subject: Re: Looking for in depth documentation on SSD PCB pins
PostPosted: November 6th, 2018, 15:53 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10944
Location: Australia
For an SM2246XT development kit, see viewtopic.php?f=10&t=35425

@sourcerer has done a great deal of reverse engineering work on a Samsung 840 Evo, including JTAG-ing.

http://www2.futureware.at/~philipp/ssd/
http://www2.futureware.at/~philipp/ssd/TheMissingManual.pdf

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Looking for in depth documentation on SSD PCB pins
PostPosted: November 6th, 2018, 16:51 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 3167
Location: Adelaide, Australia
If you mean this, it is just some PCBs can be used for say 256GB or 512GB drives, or have different parts depending on different versions of chips used. Usually there are more locations for electronic parts than actual parts.
The blobs are nothing special, just places where no parts were soldered. "unpopulated"

Attachment:
blob.png
blob.png [ 81.26 KiB | Viewed 506 times ]


Top
 Profile  
 
 Post subject: Re: Looking for in depth documentation on SSD PCB pins
PostPosted: November 6th, 2018, 17:14 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10944
Location: Australia
HaQue wrote:
If you mean this, ...

I think the OP is referring to the diamond shaped "pads" such as the one below "SW3". I haven't been involved in PCB manufacturing, so I may be wrong, but I suspect that these are registration points used for aligning multiple PCB layers.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 6 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group