Yes. Nissan uses the first two letters for the engine family. So in your case it's the CA engines. Then next is numbers which refers to displacement in liters. Your's is 20 so that means 2.0. Finally there are a series of letters. You have just the letter E which means single overhead cam.
so it makes sense here is the breakdown on the versa. MR18DE means MR family, 1.8 liter, dual overhead cam.