UVM Sequence Example classmy_sequenceextendsuvm_sequence;`uvm_object_utils(my_sequence)functionnew(stringname="my_sequence");super.new(name);endfunction// Called before the body() tasktaskpre_body();...endtasktaskbody();my_data pkt;`uvm_do(pkt);endtask// Called after the body() tasktas...
task run_phase(uvm_phase phase); req_c req; forever begin get_next_item(req);// Item from sequence via sequencer fork begin //drive request toDUT which can take more clocks //separate threadthat doesn’t block sequence //driver can acceptmore items without waiting end join_none item_don...
/// DO NOT USE THIS PATTERN - Supplied as an example of what NOT to do/// Inside sequence_As body method//taskbody();// Initialise etcfork// The body code including other sequences and sequence_items// ...join_none endtask body;/// The body task exits immediately, in the controll...
(参考上一节工厂模式) $cast中的seq是uvm_sequence_base类型,多态。 4. 调用seq.start(), 执行body()函数的代码。 5. 只有使用default_sequence的方式启动,case0_sequence中starting_phase才不等于 null. (只摘取了与策略模式有关的 code)+: default_sequence的方式启动,会调用seq.start()函数来运行body()函...
UVM TLM can_put Example Instead of directly trying to put a packet, the sender can first query to see if the receiver is ready or not withcan_putfunction and then send the packet. classcomponentAextendsuvm_component;`uvm_component_utils(componentA)// Rest of the code remains samevirtualtas...
classbus_itemextendsuvm_sequence_item;// Factory registration`uvm_object_utils(bus_item)// Properties - a selection of common types:rand int delay;rand logic[31:0]addr;rand op_code_enum op_code;string slave_name;rand logic[31:0]data[];bit response;functionnew(string name="bus_item");su...
() \`endif/*Remark 1:- this example shows two alternative approaches to handle local properties -When the define USE_FIELD_MACROS is set, the code is utilizing the uvm_field_xxx macrosto mark transaction fields as "uvm fields". Doing so automatically infers code which handlescompare,print,...
1) 正如这个图片所展示的,UVM是除了DUT(待验证模块)的其他所有部分。其中,sequencer产生sequence(图上没画),sequence产生transaction。 transaction,类似于软件中的一个package。在硬件中,以一个transaction为单位进行传输,一个完整的transaction传输结束,才拉高或拉低电平。
1) 正如这个图片所展示的,UVM是除了DUT(待验证模块)的其他所有部分。其中,sequencer产生sequence(图上没画),sequence产生transaction。 transaction,类似于软件中的一个package。在硬件中,以一个transaction为单位进行传输,一个完整的transaction传输结束,才拉高或拉低电平。
uvm_sequence_item是一个uvm_object,它包含实现协议和与DUT通信所需的数据字段。uvm_driver负责将sequence_item转换为信号级接口上的“pin wiggle”,以向DUT发送或从DUT接收数据。sequence_item由一个或多个uvm_sequence对象提供,这些对象在transaction级定义激励,并在agent的uvm_sequencer组件上执行。sequencer负责执行、...