All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: WL SDR and AP
PostPosted: August 28th, 2023, 19:09 
Offline

Joined: September 17th, 2016, 16:06
Posts: 417
Location: India
why does WL SDR real block size follow a A.P (airthmatic progression while reading the pages?)

ie follows an​=a1​+(n−1)⋅d

where an is number of pages read. a1 = 2 and n is real block size and d is 3.

Where is it referred in ONFI standards? Can some one put some light here?

--


Top
 Profile  
 
 Post subject: Re: WL SDR and AP
PostPosted: August 29th, 2023, 4:58 
Offline
User avatar

Joined: July 8th, 2019, 12:27
Posts: 115
Location: 中国大陆浙江省湖州市
Do you understand the addressing mode of the traditional SDR model? If you understand this concept, please provide an example. I will tell you the difference between the SDR mode and the WL SDR mode addressing. However, if you are not familiar with these concepts, I won't be able to help you get started.

_________________
Auxiliary Tool Used For MonoLith Data Recovery, featuring the industry's most extensive Monolith pinouts
http://flash-matrix.com/


Top
 Profile  
 
 Post subject: Re: WL SDR and AP
PostPosted: August 29th, 2023, 12:25 
Offline

Joined: September 17th, 2016, 16:06
Posts: 417
Location: India
The beauty of not knowing is one can always know it at one point causally in the time domain. It would be still wonderful if you can share your knowledge base here for the ones who may know more than me (at the moment in time)?

And it is quite surprising that none of the other flash engineers not participating here. I still am very happy that you wrote atleast something here.

--
PS: We never knew how to land on the south pole of moon either a few years ago. Just a reminder :)


Top
 Profile  
 
 Post subject: Re: WL SDR and AP
PostPosted: August 29th, 2023, 21:33 
Offline
User avatar

Joined: July 8th, 2019, 12:27
Posts: 115
Location: 中国大陆浙江省湖州市
This is not a knowledge point required for data recovery work (at least not at the current stage), so it is not necessary to understand it. However, if debugging, designing readers, and writing protocol decoding are required, then the foundational knowledge is necessary. Hynix and Toshiba NAND flash use the WL mode for addressing (read and program). Reads can be non-sequential, but programming must follow the prescribed rules.


Attachments:
WL_PageProgram.png
WL_PageProgram.png [ 65.75 KiB | Viewed 2475 times ]
Pages&WL.png
Pages&WL.png [ 151.99 KiB | Viewed 2475 times ]

_________________
Auxiliary Tool Used For MonoLith Data Recovery, featuring the industry's most extensive Monolith pinouts
http://flash-matrix.com/
Top
 Profile  
 
 Post subject: Re: WL SDR and AP
PostPosted: August 31st, 2023, 15:48 
Offline

Joined: September 17th, 2016, 16:06
Posts: 417
Location: India
Thanks for letting out the information. It's intriguing enough for me to explore and learn more.
--


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 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