Does anyone know if ITE IT8628E super i/o is programable?
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Re: Is ITE IT8628E programable
Update - found out this chip is non programmable :-(
Being still quite the newbie at board repair i have questions. where does this chip get its firmware is it located in a region of the bios that it reads or does it come pre-programmed from the manufacture.
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Re: Is ITE IT8628E programable
Hi, my guess is the SIO chips generally are not programmable chips, but rather parametrizable chips with build-in fixed logic. I have exchanged plenty of them on different bords, both ITE's and Nuvoton's w/o any programming, and they worked fine. As far as I know, they have plenty of registers which can be used for parametrising their functions, I guess this is done via the Management Engine software (ME) of the chipsets, which is some kind of firmware/independent OS of the chipsets and is part of the BIOS, and sometimes is also transferred by the BIOS during/after update to the internal chipset non-volatile memory (observed on ASUS boards). This ME is usually disigned by vendors like AMI, but it is customized by each of the board vendors according to their products lines (eg. commercial or consumer) and requirements. The ME is a quite complex part of operating software, and works independent of the operating system used with the mothertboard, eg. Windows/ Linux. It works inside the chipset even when the board is in standby, if the 5VSB standby voltage is present, and can also even communicate via the LAN interface with the world (used mostly on commercial boards for remote maintenance). This communication capability is also a potential security threat, as it allows to access the MB hardware remotely, so people who cover their cameras on laptops are not completely crazy, they only don't know why they should do it. However I have seen also some boards where the SIO had an EEPROM attached, but no idea for what reason.Last edited by DynaxSC; 11-15-2022, 07:59 AM.Comment
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Re: Is ITE IT8628E programable
ME is completely unrelated to EC/SIO. AMD does not even have ME.
https://www.badcaps.net/forum/showpo...29&postcount=2
"Programmable" can mean various things. OP is asking about programming an embedded Flash with the firmware, which a bunch of laptop EC have (and some high-end desktop motherboards can have too). Others load the firmware from a dedicated SPI ROM or from the main BIOS SPI ROM. Some desktop SIO do not load an executable firmware image but rather are configured through registers by the BIOS.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: Is ITE IT8628E programable
Thanks piernov, this clarifies a lot, learned again something !Comment
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Hi,
I asking for help on some new WSON8 256MB chips. Please share your experience. I faced error on some new chips on read, erase, write with different programmers. These new chips are not exist in any programmers database. (GD25B256D, XM25RH256, W25Q256JV so on.)
I'm using RT809F V.5.0, EZP2023 Pro, CH341A Green
For the exact experience with GD25B256DYIG is RT809F erase the chip under 33sec. This kind of 256MB chip normal erase time is 70-120sec so I think not all the partitions are erased. If I do blank check or reread the buffer says FFFFFF but when I write the correct... -
Just archiving everything related to bumpgate since most stuff has disappeared from Google. Maybe people will finally take the time to read some of it and stop shouting "reflow gpu" at every occasion but rather try to understand what the real issue is…
Interesting parts about the failure analysis are "Why Nvidia's chips are defective" and "Why Nvidia's duff chips are due to shoddy engineering"
May complete this post at a later date with more details.
Basically issue is a combination of thermal dissipation of the chip with hotspot,... -
I'm looking to upgrade several 8GB 820-00850 boards to 16GB or 32GB for personal use. I am curious what the best practice and process is for sourcing new replacement chips, and what vendor(s) you guys prefer? Another question is, how do I find compatible chips and their corresponding part/model numbers? For example, in the 820-00850 schematic, the DDR chip U2600 model listed (EDFB232A1MA) corresponds to 1x32GB chip. Of course, I would need 4x8GB chips to replace the 4x2GB chips currently on the board. How do I find compatible 8GB chips? Is it as simple as searching "BGA178 8GB 2133"... -
Hello dear badcappers!
The title pretty much says it all - do you, please, know if there's any way to troubleshoot which of the integrated RAM chips (LPDDR5X in this case) is faulty?
Backstory:
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If there is a way to narrow down which memory module is faulty it would make my life much... -
Hello guys,
my question might seem trivial to experienced technicians, but since I didn't have any previous experiences with flashing the BIOS chips (except through Windows update utility), I need your explanation.
I have found a schematics for my problematic MB and there I can see two 8 legs chips. Extracts from the schematics is atatched as .png picture.
Now when I download .bin file here on the forum, how can be sure to which chip this file needs to be written to?
Can you please explain me what is the purpose for two chips (they are not redundant...
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