Data received in the incoming SEND messages is copied to RQ buffers by ERNIC IP. The software can retrieve this data by doing the following steps:
1. Read the RQWPTRDBADDi value. If there is a change from previous value, then process the received data by reading the data from RQBAi+offset. This offset is calculated based on RQ buffer size and the value in RQWPTRDBADDi.
2. After processing the received messages, increment RQCIi register value to indicate to the hardware that buffer is consumed so it can be used for further incoming messages.