Example of uvm:10.2.2 layer sequence

1. The sequence to generate Ip_transaction are as follows:

2. The corresponding sequencer are as follows:

3. This sequencer is to be instantiated in My_agent, at this time, there are two sequencer in my_agent:

4. To use layer sequence, the most important thing is how to give ip_transaction to the sequence that produces my_transaction. Add a port to the My_sequencer and instantiate:

5. Connect in My_agent:

6. In the sequence that produce my_transaction:

1) because you want to use the variable ip_tr_port in sequencer, you use the DECLARE_P_SEQUENCER macro to declare sequencer.

2) wireless cycle, because the time to get new ip_transaction from Ip_tr_port. An infinite loop like driver. So you can't objection in it.

3) Objection to be controlled in ip_sequence.

7. Start these two sequence:

8. Default_sequence can be used, provided that the member variable in VSQR points to the corresponding sequencer:

1) When establishing CRC error, only need to establish crc_sequence and start on My_sequencer.

2) When building checksum, just build cks_err_seq and start on Ip_sequencer.

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Example of uvm:10.2.2 layer sequence