Fixed-Point Blockset

Fixed-Point Blocks

The Fixed-Point Blockset blocks are group into the following categories based on usage. For detailed block descriptions, refer to Chapter 9, Block Reference.

Math Blocks
FixPt Absolute Value	Output the absolute value of the input.
FixPt Constant	Generate a constant value.
FixPt Dot Product	Generate the dot product.
FixPt Gain	Multiply the input by a constant.
FixPt Matrix Gain	Multiply the input by a constant matrix.
FixPt MinMax	Output the minimum or maximum input value.
FixPt Product	Multiply or divide inputs.
FixPt Sign	Indicate the sign of the input.
FixPt Sum	Add or subtract inputs.
FixPt Unary Minus	Negate the input.

Conversion Blocks
FixPt Conversion	Convert from one Fixed-Point Blockset data type to another.
FixPt Conversion Inherited	Convert from one Fixed-Point Blockset data type to another, and inherit the data type and scaling.
FixPt Data Type Propagation	Configure the data type and scaling of the propagated signal based on information from the reference signals.
FixPt Gateway In	Convert a Simulink data type to a Fixed-Point Blockset data type.
FixPt Gateway In Inherited	Convert a Simulink data type to a Fixed-Point Blockset data type, and inherit the data type and scaling.
FixPt Gateway Out	Convert a Fixed-Point Blockset data type to a Simulink data type.

Look-Up Table Blocks
FixPt Dynamic Look-Up Table	Approximate a one-dimensional function using a selected look-up method and a dynamically specified table.
FixPt Look-Up Table	Approximate a one-dimensional function using a selected look-up method.
FixPt Look-Up Table (2D)	Approximate a two-dimensional function using a selected look-up method.

Logical and Comparison Blocks
FixPt Bitwise Operator	Perform the specified bitwise operation on the inputs.
FixPt Dead Zone	Provide a region of zero output.
FixPt Logical Operator	Perform the specified logical operation on the inputs.
FixPt Multiport Switch	Switch output between different inputs based on the value of the first input.
FixPt Relational Operator	Perform the specified relational operation on the inputs.
FixPt Relay	Switch output between two constants.
FixPt Saturation	Bound the range of the input.
FixPt Switch	Switch output between the first input and the third input based on the value of the second input.

Discrete-Time Blocks
FixPt FIR	Implement a fixed-point finite impulse response (FIR) filter.
FixPt Integer Delay	Delay a signal N sample periods.
FixPt Tapped Delay	Delay a scalar signal multiple sample periods and output all the delayed versions.
FixPt Unit Delay	Delay a signal one sample period.
FixPt Zero-Order Hold	Implement a zero-order hold of one sample period.

The Fixed-Point Blockset Library

Compatibility with Simulink Blocks