regarding the VREG:
I crashesd 3 devices.
The first device it was a 83055Q the VREG powered my controller at an current of about 40 mA.
Accidently I crased the first device by overload the the VREG. That was my fault during measurings at my controller (maybe I shorted VCC accidently)
The result was nor Hardware function and VREG was 0V after crash. Using an external VREG had no success.
That had nothing to to with the posted AVDD error !
The second device crashed exactly at the situation how mentioned in the post.
It was also a 83055Q but I took care for the VREG current and powered my controller seperately. I only connected the GND.
The result was: The device run properly befor AVDD error happend but the Sense Outputs had an extremly distortion (like a T1 function).
Because of that I connected my 5V VCC Controller Voltage with the 83055Q VREG. After that the sense signal were fine and like expected.
The third device was an 8305 N-Type without VREG for external use.
At this device I did nothing with VREG.I only delivered VREG from my controller.
After som work the AVDD crash happened.
During the nFault toggles I did not recognice any fault information at the SPI registers. The low operiod of nFault was abaot 1 ms.
At first I have to repair my boards to exchange the 8305 agains new running ones. After that I try to slowly repeat the scenario an try to read out the flags during nFault activity. Maybe I can track the SPI-Datas with my scope, or LA so Im free from possible read delays of my controller.
I hope for next week that I have repaired boards.
I crashesd 3 devices.
The first device it was a 83055Q the VREG powered my controller at an current of about 40 mA.
Accidently I crased the first device by overload the the VREG. That was my fault during measurings at my controller (maybe I shorted VCC accidently)
The result was nor Hardware function and VREG was 0V after crash. Using an external VREG had no success.
That had nothing to to with the posted AVDD error !
The second device crashed exactly at the situation how mentioned in the post.
It was also a 83055Q but I took care for the VREG current and powered my controller seperately. I only connected the GND.
The result was: The device run properly befor AVDD error happend but the Sense Outputs had an extremly distortion (like a T1 function).
Because of that I connected my 5V VCC Controller Voltage with the 83055Q VREG. After that the sense signal were fine and like expected.
The third device was an 8305 N-Type without VREG for external use.
At this device I did nothing with VREG.I only delivered VREG from my controller.
After som work the AVDD crash happened.
During the nFault toggles I did not recognice any fault information at the SPI registers. The low operiod of nFault was abaot 1 ms.
At first I have to repair my boards to exchange the 8305 agains new running ones. After that I try to slowly repeat the scenario an try to read out the flags during nFault activity. Maybe I can track the SPI-Datas with my scope, or LA so Im free from possible read delays of my controller.
I hope for next week that I have repaired boards.