HDD GURU FORUMS

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?

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

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

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

Does this help (from Innostor's datasheet)?