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A special setting of 63 for the cccccc field, selects long responses and/or 48-bit R3 OCR responses. Therefore, since 136 bit long responses are not differentiated from 48-bit R3 OCR …
By setting the OCR to zero in the argument of ACMD41, the host can query each card and determine the common voltage range before sending out-of-range cards into the Inactive State …