Configuring CC112x/CC120x RX Sniff Mode

The RX Sniff Mode is a novel feature enabled by the Texas Instruments Performance Line WaveMatch technology. The receiver only needs 4 bits of preamble for settling, as opposed to legacy receivers that often need 3—4B. In a typical RF protocol where several preamble bytes are transmitted, TI Performance Line can autonomously duty cycle the receiver while waiting for a packet. Therefore, the RX Sniff Mode can be used fully transparent to you, while offering greatly reduced average current without sacrificing RF performance. The RX Sniff Mode is enabled by using the eWOR timer together with the RX termination based on carrier sense (CS) or preamble quality threshold (PQT).

This application report shows how the RX Sniff Mode can be configured for different TX configurations and discusses how average power consumption can be estimated for a receiver implementing this mode. You are expected to have basic knowledge on how the enhanced Wake on Radio (eWOR) and the RX Sniff Mode are implemented in TI's Performance Line Sub-1GHz RF family of devices.

View the PDF document for more information.

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