Products > Test Equipment
New bench scope - Fnirsi 1014D, 7", 1GSa/s
joseph4511:
It was special i2c ic that i changed. I have Quick 816dw Hot air station and aixun t3a soldering station with genuie jbc c245 tips. Amscope trinocular microscope, uni t ut61e+ multimeter, vision 8 bga machine and vice versa. I can solder everything without a doubt :) I have pretty good soldering skills and tools.
Edit: the making on the IC is SE 98, when i checked for datasheet there s only one which is ddr temperature sensor.
pcprogrammer:
Well then I hope you still have one that is working, because this IC is unknown to what it is. Most likely some micro-controller with a forgiving I2C interface. (The I2C implementation in the FPGA is not very good timing wise)
In the original firmware it is used as some lookup device. It is also found in the 1013D but I found that it is not actually needed for reading the sample data from the FPGA.
It might well be possible to implement the needed functionality in a tiny85 or similar type of MCU. The defective board can be used without it, but needs firmware that is stripped from using this special IC. Not an easy task since it still needs the response values to have the rest of the system behaving properly.
joseph4511:
They both dont work now i dont know why :)
pcprogrammer:
--- Quote from: joseph4511 on May 01, 2022, 04:55:45 pm ---They both dont work now i dont know why :)
--- End quote ---
Ouch |O that is a bummer.
In the 1013D thread there is info about what the IC does and also some talk about measurements on the I2c data between the FPGA and the "special ic". For example a bit here https://www.eevblog.com/forum/testgear/fnirsi-1013d-100mhz-tablet-oscilloscope/msg3880016/#msg3880016
I guess there are three paths you can take:
* Do nothing and accept the device is bricked.
* Try to make code for a tiny85 MCU that mimics the "special ic". A lot of information can be found in the 1013D thread and repository.
* Try to hack the original firmware and kill of the code that interfaces with the "special ic". For this there is also a lot of information in the 1013D thread and repository.
A defective touch panel is what lured me in to reverse engineering the 1013D, so maybe the defective "special ic" is your lure for the 1014D 8)
joseph4511:
i do not have free time for this device :) Going to send it back to china, they will fix it in 10 minutes :)) Im curious about the 100mhz, can this device measure 100 mhz correctly ?
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