APB READ_TRANSFER

UVM
20

In reply to PJ:

I was now looking in more detail.
You are reading from your uninitialized memory. This is really not useful, because it returns only x on your interface.
And I modified your monitor to:

task run_phase(uvm_phase phase);
    sequence_item transaction;
    transaction = sequence_item::type_id::create("transaction");
forever begin
  @ (posedge vif.clk);
  transaction.data_in = vif.din;
  transaction.wr_en = vif.wr_en;
  transaction.rd_en  = vif.rd_en;
  //transaction.data_ram = vif.mem;
  @ (posedge vif.clk);
  transaction.data_out = vif.dout;
  
  //$display("ram=%h",vif.mem);
  item_collected_port.write(transaction);
 `uvm_info("FIFO_MONITOR", $psprintf("Wrote transaction %s",transaction.convert2string()), UVM_LOW);
  end
   
  endtask:run_phase

See the additional clockedge befor vif.dout will be stored.