Tool/software:
Hi,
The CPU is AM3352 and the PMIC is TP65910AA1RSL(R). To reduce system costs, we are considering reducing the number of RTC-ICs on the custom board and trying out PMIC RTC. I would like to inquire about the PMIC BOOT pin settings. When using PMIC RTC, a 32K clock is required.
① Connect a 32kHz crystal oscillator between OSC32KIN-OUT
② Connect a 32kHz oscillator resistor to OSC32KIN
Whether ① or ② is required is determined by the BOOT settings according to the data sheet. Until now, BOOT1,0 = 1,0 (EEPROM sequence) has been set for custom boards. When using PMIC RTC with AM3352 and DDR2, how should the BOOT pins be set? Is it okay to keep it as before with BOOT1,0 = 1,0? If it is okay to leave BOOT1,0=1,0 (EEPROM sequence), which one will be selected, ① or ②?
Thanks,
Conor