Add Payload Extension diagram, Transaction object with Memory Manager diagram and Architecture of ackend TLM diagram to README file

README.md

@@ -804,6 +804,24 @@ A description of the content each directory follows.
   - **traces**: trace files for simulations. They contain accesses to memory
     in certain known scenarios.
 
+#### DRAMsys Diagrams
+
+- **Payload Extension information**
+
+  GenerationExtension is added in TracePlayer and DramExtension is added in Arbiter.
+  
+  ![Payload Extension information](DRAMSys/docs/images/PayloadExtension.png)
+  
+- **Transaction object with Memory Manager**
+  
+  The acquire method is called before passing the transaction object and the release method is called after the component is done with the transaction object.
+
+  ![Payload Memory Manager](DRAMSys/docs/images/PayloadMemoryManager.png)
+
+- **Architecture of the backend TLM model**
+  
+  ![Architecture backend TLM](DRAMSys/docs/images/TransactionPhase.png)
+
 #### References
 
 [1] TLM Modelling of 3D Stacked Wide I/O DRAM Subsystems, A Virtual Platform for Memory Controller Design Space Exploration