All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 11 posts ] 
Author Message
 Post subject: SM2246XT
PostPosted: June 1st, 2017, 15:35 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 885
Hello!

Please, Show me on the pcb what points for safe mode? look photo


Attachments:
IMG_8026.JPG.jpg
IMG_8026.JPG.jpg [ 404.88 KiB | Viewed 1525 times ]

_________________
Нет ничего невозможного
Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 1st, 2017, 17:04 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 9620
Location: Australia
Here is a DIY development kit (US$22). Perhaps you could ask the seller for firmware and hardware development tools or documentation?

SSD PCBA Kits, SSD DIY, Flash Memory Interface BGA152/132, SM2246XT H AA, SATA6Gb/s Interface, SM2246HX, 4CH 4CE 4-LAND NAND Flash

https://www.aliexpress.com/item-img/SSD-PCBA-KITS-SSD-DIY-PCBA-Flash-Interface-BGA152-132-SM2246XT-H-Controller-SATA6Gb-s-Interface/32543701998.html

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 13:48 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 885
sempre wrote:
Hello!

Please, Show me on the pcb what points for safe mode? look photo


Attachments:
IMG_8027.PNG.jpg
IMG_8027.PNG.jpg [ 231.6 KiB | Viewed 1451 times ]

_________________
Нет ничего невозможного
Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 13:48 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 885
sempre wrote:
Hello!

Please, Show me on the pcb what points for safe mode? look photo

_________________
Нет ничего невозможного


Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 14:30 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 9620
Location: Australia
You have shown us the JTAG port and a serial communications port. :?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 16:01 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 885
fzabkar wrote:
You have shown us the JTAG port and a serial communications port. :?


Attachments:
img pcb ssd.tiff
img pcb ssd.tiff [ 427.94 KiB | Viewed 1430 times ]

_________________
Нет ничего невозможного
Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 16:13 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 9620
Location: Australia
The development kit has similar test points (ROM, ISP, HWP). These kits are useless without docs or software tools. That's why I suggested that the seller may have documentation that could help you.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 17:55 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 9620
Location: Australia
FWIW, SanDisk's Z400S SSD has a JTAG edge connector (J1) plus a single pair of ROM pads. Perhaps the ROM pads are the answer?

http://pc.zoznam.sk/plextor-m6v-vs-sandisk-z400s-aky-vplyv-na-vykon-ssd-ma-dram-cache?page=2

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 6th, 2017, 9:21 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 885
fzabkar wrote:
FWIW, SanDisk's Z400S SSD has a JTAG edge connector (J1) plus a single pair of ROM pads. Perhaps the ROM pads are the answer?

http://pc.zoznam.sk/plextor-m6v-vs-sandisk-z400s-aky-vplyv-na-vykon-ssd-ma-dram-cache?page=2


Thanks all helps!!

Sorry, Did not enter safe mode.

Is busy 100%.


Attachments:
error ssd.tiff
error ssd.tiff [ 197.02 KiB | Viewed 1195 times ]

_________________
Нет ничего невозможного
Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 6th, 2017, 10:14 
Offline
User avatar

Joined: October 14th, 2005, 9:26
Posts: 885
fzabkar wrote:
FWIW, SanDisk's Z400S SSD has a JTAG edge connector (J1) plus a single pair of ROM pads. Perhaps the ROM pads are the answer?

http://pc.zoznam.sk/plextor-m6v-vs-sandisk-z400s-aky-vplyv-na-vykon-ssd-ma-dram-cache?page=2



YES!!

CORRECT!!

THANKS!

_________________
Нет ничего невозможного


Top
 Profile  
 
 Post subject: Re: SM2246XT
PostPosted: June 6th, 2017, 16:32 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 9620
Location: Australia
I'm wondering whether a general method that could apply to all flash based devices would be to short the NAND or controller R/B* pins (open drain) to ground during power-on. I have recently seen one SSD that does it this way.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 11 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 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