Hardware Design and Verification
1 How To Start Virtual Sequencer ? Answer : click 2 What Is M_sequencer And P_sequencer ? Answer : click 3 Write Uvm Sequence Item For Asynchronous Fifo ?? Answer : click 4 What Is Virtual Sequencer ? When And How To Use It ? Answer : click 5 What Is Difference Between UVM Resource DB Vs UVM Config Db
UVM test benches .. I tried covering few example , go through each Memory UVM testbench UVM testbench click here Synchronous FIFO UVM TESTBENCH UVM Testbench click here NORMAL ADDER UVM Tesbench UVM Testbench click here
A virtual sequencer is a sequencer that can run sequences, but it doesn’t connect to any drivers,hence the virtual name. It is designed to run virtual sequences that spawn sub-sequences on other sequencers. 1 You can start virtual sequences on a virtual sequencer. 2 Handles part of the virtual sequence can be started on null
m_sequencer is default sequencer and p_sequncer is typecast to m_sequencer in other words m_sequencer is a handle of type uvm_sequencer_base which is available by default in a sequence. p_sequencer :The real sequencer on which a sequence is running would normally be derived from the uvm_sequencer_base class.Hence to access the real sequencer on which sequence is
When the size of the collection is unknown or the data space is sparse, an associative array is used, which does not have any storage allocated until it is used. That means, it is dynamically allocated, but has non-contiguous elements. Associative array’s index expression is not restricted to integral expressions, but can be of any
BLOCK DIAGRAM class seqItem extends uvm_sequence_item; `uvm_object_utils(seqItem) logic [8-1:0] rdata; logic wfull; logic rempty; rand logic [8-1:0] wdata; logic winc, wrst_n; logic rinc, rrst_n; function new (string name=”seqItem”); super.new(name); endfunction endclass
UVM is built on system verilog , so what ever UVM is doing underlying coding is SV So in general , lets take broader view with respect to ther language if you have heard of JAVA , and Hibernate Hibernate : is a framework built on java helps in managing data base beautifully , if
What is memory Memory is electronic component which can store information. it stores at certain address while reading from memory it retrieve the data from certain memory Block Diagram of Memory DUT module memory #( parameter ADDR_WIDTH = 32, parameter DATA_WIDTH = 64 ) ( input clk, input reset, //control signals input [ADDR_WIDTH-1:0] addr, input wr_en,
Definition : Fifo (synchronous ) The Synchronous FIFO has a single clock port for both data-read and data-write operations, it means it is used for synchronising across two process when two process are running on same clock. One source writes to the FIFO and the other sources reads out the FIFO where it sees the order
Virtual sequencer : it contains handles of the sequencer which are located in different agent Q. Question is when do we use it ?? Why do use it if something has to be synchronized , in general stimulus generation across different interface has to be synchronized, which is done by Virtual sequencer , virtual sequences
