MRF24XA_15 Datasheet, PDF (146/258 Pages) Microchip Technology – Low-Power, 2.4 GHz ISM-Band IEEE 802.15.4™ RF

MRF24XA
FIGURE 5-5:
CCM*/CBC-MAC AUTHENTICATION OPERATION (TX)
TX Buffer
Length
MHR
MAC Payload
Updating
Length
Authentication
MHR
MAC Payload
Tag
Updating
CRC Generation
Transmitted
into the air
Length
MHR
MAC Payload
Tag
CRC
Exception Handling:
TXSZIF: Transmit Packet Size Error Interrupt Flag
TXST is set when the packet size (including MIC tags and CRC) is found to be zero or to be greater than the
maximum size that the buffers can support.
FRMIF: Frame Format Error Interrupt Flag
Set if the transmitter/receiver fails to parse the frame in the buffer (it is not as it must be or it is corrupted in demod-
ulation). For example, reserved values are found in the MAC header fields.
DS70005023C-page 146
Preliminary
 2015 Microchip Technology Inc.