uvm driver 示例
时间: 2023-08-27 09:05:54 浏览: 42
以下是一个简单的UVM驱动程序的示例,用于向DUT发送数据:
```verilog
class my_driver extends uvm_driver #(my_transaction);
`uvm_component_utils(my_driver)
// Override the run_phase to send transactions to the DUT
virtual task run_phase(uvm_phase phase);
my_transaction tx;
forever begin
// Get the next transaction from the sequencer
seq_item_port.get_next_item(tx);
// Drive the transaction to the DUT
send_data(tx);
// Notify the sequencer that the transaction has been sent
seq_item_port.item_done();
end
endtask
// Method to send the transaction to the DUT
virtual task send_data(my_transaction tx);
// Convert the transaction to a packet
my_packet pkt = convert_to_packet(tx);
// Drive the packet to the DUT
dut_if.drive(pkt);
// Wait for the DUT to acknowledge the packet
dut_if.wait_for_ack();
endtask
endclass
```
在上面的示例中,`my_driver`是一个UVM驱动程序,它发送`my_transaction`类型的事务到DUT。在`run_phase`中,驱动程序从`seq_item_port`获取下一个事务,并通过`send_data`方法将其发送到DUT。在`send_data`中,驱动程序将事务转换为数据包,并使用`dut_if`接口将其传递给DUT。然后,驱动程序等待DUT确认数据包的到达。在完成发送后,驱动程序通过`seq_item_port.item_done()`方法通知顺序生成器该事务已经发送完毕。