I have been trying to manually add a chip definition for the Sandisk SDTNPNAHEM-016G, but have had no success. I am using the settings gotten from the datasheet for the 008G model and increasing Page Size to get the larger chip.
XGecu crashes at various points during the read/verify phase on reading the chip. I have created both profiles for both the 008G and the 016G cersions but XGecu crashes on both.
I was able to get it to read with the 008G profile before updating the software, but I am not sure if that is the issue.
Any assistance would be greatly appreciated.作者: admin 时间: 2021-12-29 16:53
Upgrade to the latest version V11.71
There is no difference between EMMC 08G and 16G, when the chip reading is abnormal.
The working voltage can be switched for testing:
1. VCC=3.3V/VIO=3.3V <-> VCC3.3V/VIO1.8V
2. Try to read by 4bits mode 作者: SirA 时间: 2021-12-30 03:34
Thank you reaching out. I am not sure if it matters, but the chip in question is a 48-pin TSOP NAND.
I am at SW Version 11.71 and Firmware 00.1.51
I do not see a place to change the VIO in the Config tab, just the VCC, I have tried at VCC@2.5v (Below the operating voltage of 2.7v-3.3v) and VCC@3.0v to no luck.
I am not sure what 4bits mode is, unless it is Bit Flip Permission, which I tried as well at both voltages.
Attached is the Technical Specifications of the 008G version.
I got it wrong. I thought it was an EMMC, but it was actually a NAND chip. Please give a screenshot of the error when reading.作者: SirA 时间: 2021-12-30 08:45
As far as the error, it is just Verify Errors. Sometimes it goes through all of the sectors, and sometimes it is just on a couple hundred. When I dump without verify, I get no data in the dump. just pages of of 00, FF, 33, etc.
The crashing gives no error. the app just closes. Sometimes I have to powercycle the T56, and sometimes I do not. Crashing might be due to trying out different settings that the reader cannot handle. I can send you logs, if there are any.作者: SirA 时间: 2022-1-3 10:54
Current Settings (Adjusted for the 016):
PageSize : 16384
SpareSize : 1024
Pages Per Block : 512
Blocks Size : 8192KB + 512KB
Total Blocks : 2084
Device Size : 16GB + 1042MB
Bus Width : 8
nCE# Pin : 1
nRB# PIN : 1
Is there anything that can be seen that I set up incorrectly in my settings, vs the datasheet?作者: admin 时间: 2022-1-4 10:17
回复 6#SirA
this is 64Gb (8GB) memory:
Test:
PageSize : 16384
SpareSize : 2048
Pages Per Block : 256
Total Block : 2048
or
PageSize : 8192
SpareSize : 1024
Pages Per Block : 512
Total Block : 2048作者: SirA 时间: 2022-1-5 13:03
Those settings did not dump the NAND correctly either.
I fear that either the T56 will not correctly dump the contents of this device, or it is going to require I have a usb controller in front of it to get a good read.
Thank you for your help and I appreciate all of your assistance.
图片附件: Sandisk Snip.png (2021-12-30 03:33, 168.83 KB) / 下载次数 7445