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 Post subject: What is this component (L343)? and NAND ID = 89A825CBA9
PostPosted: September 16th, 2018, 11:41 
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Joined: July 30th, 2012, 3:37
Posts: 236
Location: Fairfield, CT USA
I got an unusual PNY 128GB flash drive today, it has a component I've never seen before, a chip labeled.

Code:
AGDE
L343

The package dimensions are 6x2

None of the components have failed, I recognize the LDO right away, I'm not looking to do down that path, just identify this component.

The controller is IS903.
Also the NAND chip is interesting
NAND Reader ID: 8 x 89 88 24 4b (8GB) = 64GB
Controller ID: 4 x 89 A8 25 CB (16GB) = 64GB

I've seen SanDisk/Toshiba switch manufacture IDs (45/98) when IDing but NEVER an entire model/bank count.
By see, I mean with a logic analyzer, first ID = 45, second ID = 98.

Code:
Flash ID code:      89A825CB - Intel JS29F64B08HAMF1 - 4CE/Dual Channel [MLC-8K] -> Total Capacity = 128GB

Flash ID mapping table
----------------------------
[Channel 0]   [Channel 1]
89A825CBA900   89A825CBA900
89A825CBA900   89A825CBA900
89A825CBA900   89A825CBA900
89A825CBA900   89A825CBA900


Before thinking the controller ID code is erroneous, why would it return a valid NAND chip ID, much less one of the proper capacity?


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_DSC9189.jpg
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 Post subject: Re: What is this component (L343)? and NAND ID = 89A825CBA9
PostPosted: September 16th, 2018, 16:29 
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Joined: September 8th, 2009, 18:21
Posts: 10776
Location: Australia
The IS903 requires 1.2V (Vcore) and 3.3V (Vio) supplies. The "QVN" LDO regulator provides the 1.2V, so where is the 3.3V?

BTW, "343" could be a YWW date code, ie week 43 of 2013.


TLV70212DBVR, Texas Instruments, 1.2V, 300mA, Low IQ, LDO Regulator, marking QVN, SOT-23-5:
http://www.ti.com/lit/ds/symlink/tlv702.pdf

IS903, Innostor, USB 3.0 flash controller, Vcore = 1.2V, Vio = 3.3V, 30MHz:
http://www.innostor.com/file/Innostor_IS903_Specification.pdf

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 Post subject: Re: What is this component (L343)? and NAND ID = 89A825CBA9
PostPosted: September 16th, 2018, 18:11 
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Joined: September 8th, 2009, 18:21
Posts: 10776
Location: Australia
AFAICT, the "AGDE" component must be a 3.3V regulator, although I would have expected to see an inductor nearby (or on the underside of the PCB?). FWIW, other designs use an EML3020 switchmode IC (TDFN-6 package).

http://flashboot.ru/flash_recovery/2016/10/03/fix-innostor-hardware-problem.html
https://img.alicdn.com/imgextra/i4/2226666264/TB2_U._wm8mpuFjSZFMXXaxpVXa_!!2226666264.jpg
https://imagescdn.tweaktown.com/content/5/4/5481_07_adata_dashdrive_elite_ue700_usb_3_0_flash_drive_full.jpg
https://imagescdn.tweaktown.com/content/5/4/5481_08_adata_dashdrive_elite_ue700_usb_3_0_flash_drive_full.jpg

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 Post subject: Re: What is this component (L343)? and NAND ID = 89A825CBA9
PostPosted: September 16th, 2018, 22:43 
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Joined: December 4th, 2012, 1:35
Posts: 3152
Location: Adelaide, Australia
maybe they doing some funky stuff and "striping" channel 0 and channel 1 onto the same phy bank, and this is what NR is seeing (with some controller overlay or translation to lie about the ID. whereas the LA is seeing reality.

I am not 100% following whats going on either, definately a new way for PNY to be weirdo's


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 Post subject: Re: What is this component (L343)? and NAND ID = 89A825CBA9
PostPosted: September 17th, 2018, 2:15 
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Joined: September 8th, 2009, 18:21
Posts: 10776
Location: Australia
Does this help (from Innostor's datasheet)?


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IS903_CEs_4.gif
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