Basic HDL Algorithms

Create simple HDL designs using basic Simulink^® blocks

The HDL Coder block library contains many basic blocks that you can add to your Simulink modeling environment and develop your HDL algorithm. These blocks include input sources, output sinks, and blocks that perform basic to complex math and trigonometric operations.

To filter the Simulink Library Browser to show only HDL-supported blocks, enter hdllib. The blocks listed in this section include those blocks that are only available in the HDL Coder library. Blocks such as Add and Product are available in the Simulink library in the Library Browser.

For a filtered list of Simulink blocks supported for HDL code generation, see Simulink Block List (HDL Code Generation).

Functions

hdllib Display blocks that are compatible with HDL code generation

Model Checks

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Block-Level Checks

Check for infinite and continuous sample time sources

Check for large matrix operations

Simulink Configuration Parameters

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Test Points and Diagnostics

Enable HDL DUT port generation for test points

Diagnostics for Reals and Black Box Interfaces

RTL Annotations

Data Types

Input and Output Port Data Types

Complex Signals Postfix

Vector and Component Instances Labels

Blocks

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Logic and Bit Operations

Bit Concat	Concatenates up to 128 input words into single output
Bit Reduce	AND, OR, or XOR bit reduction on all input signal bits to single bit
Bit Rotate	Rotate input signal by bit positions
Bit Shift	Logical or arithmetic shift of input signal
Bit Slice	Return field of consecutive bits from input signal

Lookup Tables

Cosine HDL Optimized	Implement fixed-point cosine wave optimized for HDL code generation
Sine HDL Optimized	Implement fixed-point sine wave by using lookup table approach optimized for HDL code generation