embedded - Reset a MicroSd card whilst in Spi mode without a power cycle -

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i have existing embedded system existing developed c code. microsd card can lock down giving responses outside of scope of existing system. i'm unsure why suspect handler in existing system allows subsequent calls made quickly.

the card being used in spi mode have direct i/o.

the circuit diagram not show control on power , card cannot reset , re-connect fresh spi.

my option seems finding way reset through spi call, or @ creating function recover sd its' expected state whatever lock in.

with in mind, is there command or set of commands can use cause equivalent of reset, or cancel whatever microsd controller expecting? looking @ sd associations' specs, reset reference cmd0 , isn't applicable once spi mode.

any thoughts welcome, , thank in advance.

-chris


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