Table of Contents
What is the difference between analysis port and TLM port?
Difference between a TLM port and Analysis port: Analysis port supports 1 to many connections while TLM ports support only one to one connections.
What is the difference between export and implementation port?
The difference is an export is an indirect connection to an implementation. A port of a scoreboard may connect to an export of an agent. However, you do not need to know of the agent is the actual imp of the TLM method, or if it is just exporting an imp from a lower level component.
What is an analysis port in UVM?
UVM TLM 2. Analysis. The analysis port is used to perform non-blocking broadcasts of transactions. It is by components like monitors/drivers to publish transactions to its subscribers, which are typically scoreboards and response/coverage collectors. For each port, more than one component can be connected.
What is Uvm_subscriber?
This class provides an analysis export for receiving transactions from a connected analysis export. Making such a connection “subscribes” this component to any transactions emitted by the connected analysis port. This export provides access to the write method, which derived subscribers must implement. …
How does UVM detect FIFO?
FIFO verification using UVM Testbench
- FIFO full.
- FIFO empty.
- FIFO overflow.
- FIFO underflow.
- Reset recovery (If FIFO can be given soft reset).
- Simultaneous read and write when FIFO is empty, FULL, half full, one entry in FIFO, one entry less than FULL.
- If FIFO has near FULL and NEAR empty then validate that also.
What are the analysis ports in UVM?
There are three Analysis Ports: port, export and imp classes used for transaction analysis. uvm_analysis_port : Broadcasts a value to all subscribers implementing a uvm_analysis_imp. uvm_analysis_imp : Receives all transactions broadcasted by a uvm_analysis_port.
What is the function write() in UVM_analysis_imp?
Note that analysis ports given by uvm_analysis_port are always connected to its implementation port declared using uvm_analysis_imp. Function write () is the place where you need to implement the operation required to be done on the incoming transaction. In this example, we are simply printing an acknowledgment statment.
What is the difference between TLM export and analysis export?
While analysis export provides the implementation of the write method defined by the analysis port.A port unlike TLM port can be connected to one or many export .An analysis export can be of two types one is imp export and the hierarchical export.When it’s a multilevel connection hierarchical export should be used.
What is the advantage of using an analysis port?
If nothing is connected to it, then it simply does not do anything. The advantage lies in the fact that an analysis port may be connected to zero, one or many analysis exports and allows a component to call write () method without depending on the number of connected exports.