MOTDSP566 Minimum (MOTDSP566 Blockset)

MOTDSP566 DSP Blockset

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MOTDSP566 Minimum

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Purpose

Find the minimum value of one or two input vector(s).

Library

Motdsp566lib

Description

The MOTDSP566 Minimum block identifies the value and position of the smallest element in the input.

If the block has two input vectors, the block performs an element-by-element comparison of the input vectors. Each element of the block output vector is the result of the comparison of the elements of the input vectors.

If the block has only one input vector, the Mode parameter specifies the block's mode of operation and can be set to Value, Index, or Value and Index. These settings are described below.

Value

When Mode is set to Value, the block computes the minimum value of the input vector.

[y,i] = mot566_min(u(:))    % equivalent MATLAB code

The block output, y, is the minimum value of the input vector. For complex inputs the block uses the magnitude of the input, abs(u(:)), to identify the minimum. The output is the corresponding complex value from the input.

Index

When Mode is set to Index, the block performs the computation shown above, and outputs the index, i, corresponding to the position of the minimum value in the input vector. The index is an integer in the range [1 length(u(:))].

If there are duplicates of the minimum value in the input, the index corresponds to the first occurrence. For example, if the vector input is [.1 .2 .3 .2 .1], the index of the minimum value is 1, not 5.

Value and Index

When Mode is set to Value and Index, the block outputs both the value, y, and the index, i.

In all three of the above modes, a matrix input, u, is treated as a vector, u(:).

Dialog Box

Command File: Command File used by Motorola DSP566xx simulator core.
DSP Processor Type: Select the DSP Processor to be used.
Number of input ports: Number of input ports.
Mode: The block's mode of operation: Output the minimum value of each input, the index of the minimum value, both the value and the index.
Simulation Time to enter Interactive Mode (secs):: Simulation time to step into the assembly code by launching the assembly language debugger. This parameter must be a scalar greater than or equal to zero. This parameter will be ignored if not using Interactive Mode.