Using CC112x/CC120x RX Sniff Mode With SmartPreamble

Using the RX Sniff Mode functionality of Texas Instruments Performance Line Sub-1GHz RF family may decrease the average power consumption of a receiver by using long preamble sequences. Long preamble allows the receiver to sleep for longer periods of time and still reliably receive the data payload. When the radio wakes up and goes into RX it uses CS or PQT termination to detect if there is a signal. If a signal is found, the radio waits in RX until the sync word is detected.

While using long preamble sequences allows the radio to sleep longer, it also means that if it wakes up early in the preamble it has to stay a long time in RX before sync is found. SmartPreamble allows the radio to sleep while waiting for sync, which greatly reduces the current consumption.

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Originally published by Texas Instruments at www.ti.com as "CC112x/CC120x RX Sniff Mode With SmartPreamble".