1.1.1.2 Loss of Signal Detect (LOS)

Loss of signal (LOS) detection is included within the receiver path. The LOS circuitry detects the initial incoming signal determining a valid input (electrical RX_IDLE=0) for clock-data recovery operations. The LOS peak detection captures the most positive and negative points of the input signal and compares the amplitude to a limit set by the user. See Loss-of-Signal Detector. The performance of the physical peak detector is limited by the bandwidth of the input signal. The LOS detection works for rates 5 Gbps and less and may not be suitable for all protocols or data patterns. For conditions outside the range of the LOS operation, see Enhanced Receiver Management.