I have done the multiplexing in x-loader for gpio 129
IDIS | PTD | EN | M4
I just need to know that if gpio 122 is getting 3.0 volt supply , then 129 also have to get same 3 volt supply?
Is this supply is termed as sim_vdds and sdmmc_vdds?
In my hardware gpio 122, 123 are connected to 3.0 volts pull up resistors, so the gpio 129 have to be connected to 3.0 volts supply.
If this is so, then sim_vdds = 3.0(I read control_pbias_lite register and pbiaslitesupplyhigh1 = 1,so it says that 129 is supplied by 3.0 volts supply) volts and I should not try to make vmode1 = 0 to get 1.8 volts from this gpio as it would be a change from 3.0 volt to 1.8 volts and its a damaging configuration as said by data sheet.
Is my understanding correct ?
I also am using two boot methods, one is sd boot and other is nand boot. In sd boot I am getting pbias_lite_register as 0x8387 , so my supply is 3.0 volts and stable, but flashing same code in nand gives me 0x101, that says 1.8 volts and not stable.
I have saw the table 13-67 that says we can only give 1.8 volts to 1.8 volts and 3.0 volts to 3.0 volts. So in programming method 13-24 in the flowchart a condition of 3.0 to 1.8 volts or 1.8 to 3.0 volts if these are damaging or degrading configurations?
