This simple datapath is of a single-cycle nature.
SW Instruction

The SW instruction stores data to a specified address on the data memory with a possible offset, from a
source register.

It's syntax is:
SW $source register's address, offset($destination register's address).

The sample SW instruction demonstrated in the datapath above is SW $2, ($5).

The instruction's equivalent in binary is:

Information on the content of the registers used:
Register's Address Register's Address (Binary) Register's Value Register's Value (Binary)
$2 00010
$5 00101