SNLS477B October 2014 – November 2018 DS90UB948-Q1
The FPD-Link III receiver inputs incorporate an adaptive equalizer (AEQ) to compensate for signal degradation from the communications channel and interconnect components. Each RX port signal path continuously monitors cable characteristics for long-term cable aging and temperature changes. The AEQ is primarily intended to adapt and compensate for channel losses over the lifetime of a cable installed in an automobile. The AEQ attempts to optimize the equalization setting of the RX receiver. This adaption includes compensating insertion loss from temperature effects and aging degradation due to bending and flexion. To determine the maximum cable reach, factors that affect signal integrity such as jitter, skew, inter-symbol interference (ISI), crosstalk, and so forth, must also be considered. The equalization configuration programmed in registers 0x35 (AEQ_CTL1) and 0x45 (AEQ_CTL2).