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Monolithic SD Inquery

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jeremyb

Post subject: Monolithic SD Inquery

Posted: March 19th, 2015, 4:03

Joined: July 30th, 2012, 3:37
Posts: 308
Location: Fairfield, CT USA

I've seen two variations on this monolithic card, I can't make out any signals except data.. also logic is 1.2v

Has anyone seen these before? Am I missing something?

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Sasha Sheremetov

Post subject: Re: Monolithic SD Inquery

Posted: March 22nd, 2015, 18:15

Joined: July 2nd, 2014, 8:05
Posts: 201

Hello Jeremy,

I think we have a very similar card, pinout was reverse engineered (will be added to the next Visual Nand Reconstructor update).
Nothing really special - SM2702 controller inside, ECC/XOR is typical, 8-bit chip, 1 crystal (CE).

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jeremyb

Post subject: Re: Monolithic SD Inquery

Posted: March 28th, 2015, 0:22

Joined: July 30th, 2012, 3:37
Posts: 308
Location: Fairfield, CT USA

Sasha Sheremetov wrote:

Hello Jeremy,
I think we have a very similar card, pinout was reverse engineered (will be added to the next Visual Nand Reconstructor update).
Nothing really special - SM2702 controller inside, ECC/XOR is typical, 8-bit chip, 1 crystal (CE).

I suppose, maybe my logic analyzer (or me) was having a bad day, I couldn't make any sense of the log. Mine had two separate data buses but I suspect it is SM27xx as well..

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Sasha Sheremetov

Post subject: Re: Monolithic SD Inquery

Posted: March 28th, 2015, 10:21

Joined: July 2nd, 2014, 8:05
Posts: 201

Possibly, what the capacity of your card?

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jeremyb

Post subject: Re: Monolithic SD Inquery

Posted: March 28th, 2015, 19:29

Joined: July 30th, 2012, 3:37
Posts: 308
Location: Fairfield, CT USA

Sasha Sheremetov wrote:

Possibly, what the capacity of your card?

32GB

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Sasha Sheremetov

Post subject: Re: Monolithic SD Inquery

Posted: March 29th, 2015, 12:04

Joined: July 2nd, 2014, 8:05
Posts: 201

We had just 8Gb (2C64444BA9), so your one may have 2xCE and two data buses (though it's still not very common).

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