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EMMC Samsung ISP detect bug

Hello. XGecu T56 dont detect KMQE60013M-B318 via isp connection. Other EMMC work fine. Did you check this?

I solder directly to the emmc chip. But it not detect. I tried on three single chips. I will try to pull up RST_n to high level.

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Yes I applied 1.8 with external power. Pull Up RST_n dont change anything. Chip dont detect. When i add pull up resistors 22k to cmd and dat0. Chip detect, but with wrong csd and sid, and dont read and erase. I cant test it with adapter BGA221 because i cant find it to buy.

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I tested many samsung and hynix chip bga221 EMMC v5.1 and all have detect problem. Only EMMC v5.1 have this problem. All lower version detect and read normal. Maybe this bug of programmer software.

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Can you show your isp connection board. Maybe i do something wrong. And can you add link for buying bga221 adapter on ebay or alixpress.

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Over ISP I applied vccq and vcc external power accuracy stabilized. But samsung emmc detecting unstable. Please show your isp connection. Take a photo if possible.  maybe something is wrong with my connection. But hynix, kingston, sandisk bga221 detect normal.  even bga254 reads and writes well.  Problems only with bga221.  I can test a lot at your request.

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BGA221 isp pinout I using
https://ibb.co/b6V9NkJ

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OK.  I will test this method and write down the results.

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Yes with such a connection it works, but it does not work if you connect a device with emmc samsung to isp directly. This is the problem I'm trying to solve. I add pull up resistor 22k to cmd and dat0. It solve problem whith detecting hynix but not sovled problem with samsung.

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When VCC and VCCQ 3.3V i see in log

Failed -- CMD1 Respond error Status: 40FF8080

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I adding this resistors to my isp adapter.

https://ibb.co/sPqvHmP

Hynix emmc work excellent in 50MHz speed.

https://ibb.co/BGGK5xC

But this samsung take this in log

https://ibb.co/jz8HsWh

If you can see in log PNM, Product Date wrong. And it saying DAT0 is BUSY

Z3X work with this emmc fine over this isp adapter. And dont have any detecting problem. I have not idea about this trouble. Some Samsung BGA221 detecting and work fine, and some of it dont detect.

Maybe some of this ic needed lower detection speed in MHz.

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I solved my problem with this IC. It's only detect when VCCQ 3.3V. Some other emmc also working only when VCCQ 3.3V. I dont now why. Z3X work fine with this IC when VCCQ 1.8V.

I would also like to ask you to add a choice which userdata size read. For example, FULL, 256MB, 512MB, 1GB. It is not always necessary to read a full dump and such a choice would be convenient. At the moment, to make a value through "multiple partition" for reading long and not convenient.

I also want to ask if you are planning to add work with the EMMC file system sections as in the example in the screenshot. It is necessary when you need to erase \ write some of the file system partitions and you have to read the dump and work with file system in other programms to do. It is not comfortable. I could become a tester for these functions.

https://ibb.co/Hx03bqS

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Admin please dont post stupid answer. When vccq 1.8 i always use external power. And I writed about it.  How about other my question?

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Sorry:
it is easy. This function will be added in the next version.


Ok. It's nice.

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About filesystem, maybe in future you can adding this. Because it wery needed function for emmc working.

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Thanks for adding userdata reading size. It's great and very usefull. Admin you best! And i have question about jtag adding. I wait this many time from previous year.

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It's good news. Maybe a working method like rt809h will do.

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