Fundamentals of TLM

• In SV we used the mailbox to communicate between the classes, but in uvm, we used the TLM which is easier than the mailbox.
• To connect the sequencer and driver we have a special TLM port as seq_item_port
• To connect the monitor and scoreboard we use the TLM port i.e, the uvm_analysis port

---

PORT: The Port is the component that initiates the transactions, referred to as the initiator.

     The port is referred to using the square symbol.

Export: The export is the component that receives the transactions referred to as the responder.

       The export is referred to using the circle symbol.

---

• consider there are 2 components A and B.
• where A acts as initiator and B acts as responder.
• now we will have 2 scenarios: - Control Flow: CF will show which component is initiating the txs and the direction request. - Data Flow: DF will show how data flows between the components.