[UVM basics] set a monitor at the input port of the DUT to explain the necessity

ask ： Is it necessary to DUT The input port of the is set with a monitor？
answer ： It is necessary to , But not mandatory .

Detailed reasons ： because transaction By driver Generate and output to DUT On the port of , therefore driver You can give it directly to the following reference model, As shown in the following figure .

But it is still recommended monitor, as a result of ：

• First of all , In a large project , driver Send data according to a protocol , and monitor Collect data according to this protocol , If driver and monitor By different people , Then it can greatly reduce the misunderstanding of any party to the agreement ;
• second , As you will see later , When implementing code reuse , Use monitor It's very necessary .