8.5 PLCA Collision Detection

When nodes in a mixing segment are properly configured for PLCA operation there will be no physical collisions. However, under certain conditions, including mixing segments with significant inherent noise due to reflections, and systems under high electromagnetic stress, false collisions may be detected. The false detection of late collisions will result in the transmitting node dropping the packet. As packets are typically received correctly in these conditions, it is recommended to disable collision detection at any time that PLCA is enabled and active. Collision detection is disabled by writing a zero to the Collision Detect Enable (CDEN) bit in the Collision Detector Control 0 (CDCTL0) register.