The Extended Operating Mode of the radio transceiver AT86RF212 provides a hardware acceleration mechanism for time critical IEEE 802.15.4 MAC transactions, such as automatic acknowledgement frame generation, automatic CSMA-CA, and frame retransmission.
- TX_ARET
- A TX_ARET transaction combines the steps CSMA-CA, frame (re-)transmission and (if needed) acknowledgement frame processing, according to the IEEE 802.15.4 standard .
- RX_AACK
- A frame reception in RX_AACK mode is a combination of receiving a frame, matching it against the address filter, checking the FCS and transmitting the ACK frame if necessary.
The transaction flow diagrams for both modes are given in
section 5.2.3 (RX_AACK_ON Receive with Automatic ACK) and
section 5.2.4 (TX_ARET_ON Transmit with Automatic Retry and CSMA-CA Retry) of the AT86RF212 datasheet.
This section describes how the TX_ARET and RX_AACK modes are configured and how they operate during transmission and reception. Moreover, the configuration of typical (network) devices is shown.
Use Cases:
