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 Post subject: SM2246XT
PostPosted: June 1st, 2017, 15:35 
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Hello!

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


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 Post subject: Re: SM2246XT
PostPosted: June 1st, 2017, 17:04 
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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

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 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 13:48 
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sempre wrote:
Hello!

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


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 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 13:48 
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sempre wrote:
Hello!

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

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 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 14:30 
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You have shown us the JTAG port and a serial communications port. :?

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 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 16:01 
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fzabkar wrote:
You have shown us the JTAG port and a serial communications port. :?


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 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 16:13 
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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.

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 Post subject: Re: SM2246XT
PostPosted: June 2nd, 2017, 17:55 
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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

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 Post subject: Re: SM2246XT
PostPosted: June 6th, 2017, 9:21 
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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%.


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 Post subject: Re: SM2246XT
PostPosted: June 6th, 2017, 10:14 
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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!

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 Post subject: Re: SM2246XT
PostPosted: June 6th, 2017, 16:32 
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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.

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 Post subject: Re: SM2246XT
PostPosted: July 2nd, 2018, 17:45 
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SM2246EN_Datasheet_v03_20140117.rar
http://bbs.liangchanba.com/forum.php?mod=attachment&aid=MTI1OTZ8OGUzYjZlYzd8MTUzMDUxNTI4N3wwfDMxMTcx


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 Post subject: Re: SM2246XT
PostPosted: July 2nd, 2018, 18:14 
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Just FYI, Transcend's TS6510 controller is a rebranded SM2246XT (DRAM-less version of SM2246EN).

http://www.siliconmotion.com/A6.1.Detail_News.php?sn=184

Quote:
The SM2246EN is an ultra high-performance and low power SATA 6Gb/s SSD controller supporting 1y/1z nm MLC NAND from all major NAND suppliers. ... The SM2246XT is a DRAM-less SATA 6Gb/s SSD controller ...


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SM2246EN_marking.gif
SM2246EN_marking.gif [ 20.96 KiB | Viewed 1512 times ]

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 Post subject: Re: SM2246XT
PostPosted: November 16th, 2018, 23:11 
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thanks for sharing.
hddguru is still a good place for me to keep learning stuff.


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