Merlin-PT
500+ Head-Fier
- Joined
- Jan 21, 2005
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@Draknodd
AFIK the USB interface is inside the stm32f745.
Probably they run code in the cpu to implement USB audio driver when we select the DAC mode in the interface, but I'm just guessing.
Did you already changed the LDOs and OSCs?
If not, try the LDOs first, to see what impact each mod has.
@Ivan TT
I'll try that, it was planned.
I was just looking at the opamps power supply and I measure these:
any opamp pin 4 to gnd = -8.86V
any opamp pin 8 to gnd = 9.26V
Do you know if it's ok to have this difference?
AFIK the USB interface is inside the stm32f745.
Probably they run code in the cpu to implement USB audio driver when we select the DAC mode in the interface, but I'm just guessing.
Did you already changed the LDOs and OSCs?
If not, try the LDOs first, to see what impact each mod has.
@Ivan TT
I'll try that, it was planned.
I was just looking at the opamps power supply and I measure these:
any opamp pin 4 to gnd = -8.86V
any opamp pin 8 to gnd = 9.26V
Do you know if it's ok to have this difference?