Hi All,
I'm currently trying to use the Secure Non Volatile Storage (SNVS) on my Maaxboard. In the IMX8M technical specification (i.MX 8M Dual/8M QuadLite/8M Quad Applications Processors Reference Manual) it states that:
"
Throughout the SNVS documentation whenever mention is
made of "always-on" logic, this assumes a version of SNVS that implements an
independent power domain for the LP section, and that the power for this section is
supplied by an uninterrupted power supply. The purpose for the independent power
domain is so that data can be retained and certain logic can remain functional even when
the main chip logic is powered down. But this is possible only if the LP domain remains
powered via an uninterrupted power supply when the main chip power domain is
powered off. Usually this uninterrupted power supply would be a battery, with possibly
some power management logic to power the LP section from main power (and perhaps
recharge the battery) when main power is on, and switch to battery power when the main
power is off. In versions of SNVS with an independent LP power domain the LP section
can be electrically isolated from the rest of the chip logic to ensure that its logic does not
get corrupted when the main chip is powered down
"
It doesn't appear that the maaxboard has a a battery. Has anyone tried to supply a battery or an additional power source to use the SVNS? Is this possible?
Any help with this would be greatly appreciated.
Thanks,
Tom
