Hey Guys,
Hopefully you can offer some insight here. It's my understanding that the part does not work below 3.6V due the voltage drop across the LDOs. On the 65910A3 part, the default voltages are:
VCC1 = 3.3VDC generates 1.2V (VDD_MPU)
VCC2= 3.3VDC generates 1.1V (VDD_CORE)
VCC3= XXXX generates 3.3V (VAUX33 and VMMC) <<<<<<<<<<<< PROBLEM
VCC4= 3.3VDC generates 1.8V(VAUX1) and 3.3VDC (VAUX2) <<<<<<<<<< PROBLEM
VCC5 = 3.3VDC generates 1.8V (VDAC, VPLL)
VCC6= 3.3VDC generates 1.8V (VDIG1, VDIG2)
VCC7= 3.3VDC generate VTRC <<<<<<<<<<<<<< PROBLEM
VCCIO= 3.3VDC generates 1.5V (VDD_DDR3)
I only have a single regulated 3.3V for VIN/VBAT for my board. So my question is:
Can I boost the 3.3V to 5V for VCC3, VCC4, VCC7 and leave all the other pins (VCC1, VCC2, VCC5, VCC6, VCCIO) connected to 3.3V or are there internal diodes which will cross connect the different VCCs within the chip?
Thanks,