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CRC is a checksum used to detect bit errors in the receive message to be able to discard packets without valid data. Can disable everything and use as pass through receiver. If the receive signal qualifiers are integrated in the radio, false error check can be done without MCU intervention. Put MCU into low power mode and wait for an interrupt that a valid packet has been received to minimize current consumption. Transceivers from TI have digital output which generates an interrupt to the MCU if a packet has been received with OK CRC.
