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Hi Team,
I have a requirement of SD2 Voltage at 3.3V. I dont want 1.8V in my design.
So Can I place PD in SD_VSEL (PMIC Pin) so that Voltage is fixed at 3.3V?
Also I can save one GPIO pin from SoC
Is it okay to proceed with HW Control and no SW Control will be provided?
HI @ramkrish,
Thank you for contacting NXP Support!
On the EVK, the SD card voltage switching signal is connected to a GPIO of the processor.
The SD driver automatically switches between 3.3V and 1.8V during the card initialization and negotiation process. If a high speed microSD card is detected and both the card and host support lower voltage operation, the driver will transition to 1.8V signaling to enable higher performance modes.
You can also control the SD interface voltage manually if required. However, the system is already designed to handle the voltage transition automatically whenever the operating conditions require it.
Best regards,
Chavira