When any windowed mode is active, COUTA is clocked by the bus clock wheneverWINDOW = 1. The last latched value is held when WINDOW = 0.29.8.1.6 Windowed/Resampled mode (# 6)The following figure uses the same input stimulus shown in Figure 29-20, and addsresampling of COUTA to generate COUT. Samples are taken at the time points indicatedby the arrows in the figure. Again, prop delays and latency are ignored for the sake ofclarity.This example was generated solely to demonstrate operation of the comparator inwindowed/resampled mode, and does not reflect any specific application. Dependingupon the sampling rate and window placement, COUT may not see zero-crossing eventsdetected by the analog comparator. Sampling period and/or window placement must becarefully considered for a given application.WI NDOWCOUTACOUTCMPOMinus inputPlus inputFigure 29-22. Windowed/resampled mode operationThis mode of operation results in an unfiltered string of comparator samples where theinterval between the samples is determined by FPR[FILT_PER] and the bus clock rate.Configuration for this mode is virtually identical to that for the Windowed/Filtered Modeshown in the next section. The only difference is that the value of CR0[FILTER_CNT]must be 1.Functional descriptionKL25 Sub-Family Reference Manual, Rev. 3, September 2012528 Freescale Semiconductor, Inc.
