MATLAB: Does product block with divide inputs not support fixed point data type input in Simulink HDL Coder 1.6 (R2009b)

HDL Coder

I have a model which has a product block that performs division on inputs. The inputs are configured to have fixed point data types. When I run the HDL compatibility checker, I receive the following error message:

 Product block with divide input (/) only supports integer division.

Best Answer

The ability to support fixed point data type inputs is not available with product blocks with divide inputs in Simulink HDL Coder 1.6 (R2009b).

To work around this issue, you could use a EML block instead. See the example model ('EMLDivide.mdl') below.

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MATLAB: HDL Coder: how to divide (eg, 1/3) using simulink when the divisor is not 2^x

Certain synthesis tools do not support division of arbitrary numbers; this is why you are encountering this restriction. The most straightforward way to generate a synthesizable division is to use the Product block in division mode by setting its inputs to '*/'. Then you can choose either the 'RecipNewton' or 'RecipNewtonSingleRate' implementation. These avoid the use of the '/' operator.

MATLAB: Is it possible to integrate Semiconductor Intellectual Property core (IP core) into a Simulink model using Simulink HDL Coder 1.6 (R2009b)

The ability to integrate Semiconductor Intellectual Property core (IP core) into a Simulink model is available in Simulink HDL Coder 1.6 (R2009b).

If the IP core is in VHDL/Verilog, the Black box custom code integration can be used. It allows user to integrate their own IP in the code generated from Simulink HDL Coder. User must simply choose 'Black box' as the implementation of a subsystem through the control file. For more information on custom code integration through black box, refer to the documentation link below.

 <http://www.mathworks.com/help/hdlcoder/ug/black-box-implementation-for-subsystem-blocks.html>

Another approach could be to use the EDA Simulator Links product. It allows user to co-simulate the IP core using a third party VHDL/Verilog simulator with MATLAB and Simulink.

Best Answer

Related Solutions

MATLAB: HDL Coder: how to divide (eg, 1/3) using simulink when the divisor is not 2^x

MATLAB: Is it possible to integrate Semiconductor Intellectual Property core (IP core) into a Simulink model using Simulink HDL Coder 1.6 (R2009b)

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