Hello. I have questions about adjust the timing feature by CMD19 in i.MX6DQ.
uSDHC interface adjusts timing by CMD19 in case of SDR104 operation.
Does this adjustment execute for only all data lines?
(Does it adjust for CMD, too?)
When both (DATA, CMD) are adjusted,
Does "tOP" get the value which depends on each DATA/CMD line?
(When CMD and DATA signals have phase difference, does it have an influence to the tuning?)
Which signal does it based by this adjustment?