Time-constrained data copying between storage media is disclosed. When an electronic device is engaged in real-time operations, multiple data blocks may need to be copied from one storage medium to another storage medium within certain time constraints. In this regard, a data port is operatively controlled by a plurality of registers of a first register bank. The plurality of registers is copied from the first register bank to a second register bank within a temporal limit and while the data port remains under control of the plurality of registers being copied. By copying the plurality of registers within the temporal limit, it is possible to prevent operational interruption in the data port and reduce bandwidth overhead associated with the register copying operation.