Recently when working with TI's TPS65070 which is single chip solution to power up OMAP, I found that the register of TPS65070 is volatile. i.e when IC is powered down all register set back to default.
If this is the case then what's the point of sequencing all converters and LDO's. I just didn't get it what is the use of different sequencing option when it cannot be stored and TPS is gonna boot with just default sequence.
Anyone guys. I may not be thinking in right direction.
Yes, when the IC reaches UVLO, or when power is removed from the IC, or when PB_IN is pulled LOW for 15 seconds, the registers will change to default state. However, the TPS65070 is within the TPS6507x family where they have similar funcationalities but with different default sequencing options so you can choose which will best fit your powering requirements. Looking at the parametric section of the tools folder will show which TPS6507x part is compatible with a given OMAP processor. In addition, Table 9 of the datasheet will specifically show what default sequencing is implemented for each of the TPS6507x parts.
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