Viterbi IP Core User Guide

ID 683280
Date 11/06/2017
Public
Document Table of Contents
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3.5.6. Status Signals

Signal Description
bestadd[(L-1):1] The best address state. The address corresponding to the best metric as it is being found by the best state finder. The metric of this state if shown in bestmet. If you select Continuous or None optimization and turn off best state finder, the IP core leaves this signal open. For parallel decoders, the IP core removes this signal.
bestmet[bmgwide:1] The best metric. The bestmet signal shows the best state metric for every trellis step as the best state finder finds it. The state that contains this best metric is shown in bestadd. If you select Continuous or None for optimization and turn off best state finder, the IP core leave this signal open, For parallel decoders, the IP core removes this signal.
normalizations[8:1] The normalizations bus indicates in real time the number of normalizations that occur since you activated sink_sop.
numerr[] The numerr bus contains the number of errors detected during a block. The iP core updates it each time it detects an error, so you can see the location of individual errors. It is reset when source_sop asserted; it is valid two-clock cycles after source_sop. The wizard automatically sets the width of this bus. If you do not select a BER block, the IP cores leaves this signal open. Only available when you select the BER estimator option