【System Verilog and UVM基础入门18】driver and sequencer handshake

本文介绍了Sequencer如何与Driver通信,包括通过uvm_seq_item_pull_export连接以及两种通信模式:get_next_item/item_done和get/put。Driver作为主动实体,从Sequencer获取Transaction Level Objects并驱动信号到设计接口。Sequencer则生成交易类对象发送给Driver执行。建议使用get_next_item/item_done模型,因为Driver仅在Sequencer有对象时才操作。

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How does a sequencer communicate with the driver ?  
 

The driver class contains a TLM port calleduvm_seg_item_pull_portwhich is connected to auvm_seq_item_pull_exportin the sequencer in the connect phase of a UVM agent. The driver can use TLM functions toget the next item from the sequencer when required. 

How is a driver connected to a sequencer ?  

The port in uvm_driveris connected to the export in(uvm_sequencer in the connectphase of the UVM componentin which both the driver and sequencer are instantiated. Typically, a driver and sequencer are instantiated in a u

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