Our customer have a question about i.MX6DQ and MMPF0100.
Please see D10 (NSR0320) in i.MX6Q SABRE SDP schematics.
When supply VSNVS_3V0 and not supply VGEN5_2V8, about 0.25V appears on anode of D10.
So 0.25V is supplied to VDDHIGH_IN of i.MX6Q and VGEN5 of MMPF0100.
Is this no problem?
I think supply to VDDHIGH_IN is no problem since power for VDDHIGH_IN can be supplied at the same time supply for VDD_SNVS_IN, right?
But I don't know whether it is OK or not about 0.25V to VGEN5.
Would you let me know it?
If the answer to Q1 is no problem, please tell us the reason why it is no problem.
Please see the attached image, it shows the waveform of VGEN5 start-up.
You can see hump in the image, is it no problem?
If the answer to Q4 is no problem, please tell us the reason why it is no problem.