Intel® Quartus® Prime Pro Edition User Guide: Third-party Synthesis

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ID 683122
Date 3/28/2022
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Document Table of Contents
Document Table of Contents x
1. Mentor Graphics Precision* Synthesis Support 2. Synopsys Synplify* Support A. Intel® Quartus® Prime Pro Edition User Guides
1. Mentor Graphics Precision* Synthesis Support x
1.1. About Precision RTL Synthesis Support 1.2. Design Flow 1.3. Intel Device Family Support 1.4. Precision Synthesis Generated Files 1.5. Creating and Compiling a Project in the Precision Synthesis Software 1.6. Mapping the Precision Synthesis Design 1.7. Synthesizing the Design and Evaluating the Results 1.8. Guidelines for Intel FPGA IP Cores and Architecture-Specific Features 1.9. Mentor Graphics Precision* Synthesis Support Revision History
1.2. Design Flow x
1.2.1. Timing Optimization
1.6. Mapping the Precision Synthesis Design x
1.6.1. Setting Timing Constraints 1.6.2. Setting Mapping Constraints 1.6.3. Assigning Pin Numbers and I/O Settings 1.6.4. Assigning I/O Registers 1.6.5. Disabling I/O Pad Insertion 1.6.6. Controlling Fan-Out on Data Nets
1.6.5. Disabling I/O Pad Insertion x
1.6.5.1. Preventing the Precision Synthesis Software from Adding I/O Pads 1.6.5.2. Preventing the Precision Synthesis Software from Adding an I/O Pad on an Individual Pin
1.7. Synthesizing the Design and Evaluating the Results x
1.7.1. Obtaining Accurate Logic Utilization and Timing Analysis Reports
1.8. Guidelines for Intel FPGA IP Cores and Architecture-Specific Features x
1.8.1. Instantiating IP Cores With IP Catalog-Generated Verilog HDL Files 1.8.2. Instantiating IP Cores With IP Catalog-Generated VHDL Files 1.8.3. Instantiating Intellectual Property With the IP Catalog and Parameter Editor 1.8.4. Instantiating Black Box IP Functions With Generated Verilog HDL Files 1.8.5. Instantiating Black Box IP Functions With Generated VHDL Files 1.8.6. Inferring Intel FPGA IP Cores from HDL Code
1.8.6. Inferring Intel FPGA IP Cores from HDL Code x
1.8.6.1. Multipliers 1.8.6.2. Setting the Use Dedicated Multiplier Option 1.8.6.3. Setting the dedicated_mult Attribute 1.8.6.4. Multiplier-Accumulators and Multiplier-Adders 1.8.6.5. Controlling DSP Block Inference 1.8.6.6. RAM and ROM
1.8.6.1. Multipliers x
1.8.6.1.1. Controlling DSP Block Inference for Multipliers
2. Synopsys Synplify* Support x
2.1. About Synplify Support 2.2. Design Flow 2.3. Hardware Description Language Support 2.4. Intel Device Family Support 2.5. Tool Setup 2.6. Synplify Software Generated Files 2.7. Design Constraints Support 2.8. Simulation and Formal Verification 2.9. Synplify Optimization Strategies 2.10. Guidelines for Intel FPGA IP Cores and Architecture-Specific Features 2.11. Synopsys Synplify* Support Revision History 2.12. Intel Quartus Prime Pro Edition User Guide: Third-Party Synthesis Archives
2.5. Tool Setup x
2.5.1. Specifying the Intel® Quartus® Prime Software Version
2.7. Design Constraints Support x
2.7.1. Running the Intel® Quartus® Prime Software Manually With the Synplify-Generated Tcl Script 2.7.2. Passing Timing Analyzer SDC Timing Constraints to the Intel® Quartus® Prime Software
2.7.2. Passing Timing Analyzer SDC Timing Constraints to the Intel® Quartus® Prime Software x
2.7.2.1. Individual Clocks and Frequencies 2.7.2.2. Input and Output Delay 2.7.2.3. Multicycle Path 2.7.2.4. False Path
2.9. Synplify Optimization Strategies x
2.9.1. Using Synplify Premier to Optimize Your Design 2.9.2. Using Implementations in Synplify Pro or Premier 2.9.3. Timing-Driven Synthesis Settings 2.9.4. FSM Compiler 2.9.5. Optimization Attributes and Options 2.9.6. Intel-Specific Attributes
2.9.3. Timing-Driven Synthesis Settings x
2.9.3.1. Clock Frequencies 2.9.3.2. Multiple Clock Domains 2.9.3.3. Input and Output Delays 2.9.3.4. Multicycle Paths 2.9.3.5. False Paths
2.9.4. FSM Compiler x
2.9.4.1. FSM Explorer in Synplify Pro and Premier
2.9.5. Optimization Attributes and Options x
2.9.5.1. Retiming in Synplify Pro and Premier 2.9.5.2. Maximum Fan-Out 2.9.5.3. Preserving Nets 2.9.5.4. Register Packing 2.9.5.5. Resource Sharing 2.9.5.6. Preserving Hierarchy 2.9.5.7. Register Input and Output Delays 2.9.5.8. syn_direct_enable 2.9.5.9. I/O Standard
2.9.6. Intel-Specific Attributes x
2.9.6.1. altera_chip_pin_lc 2.9.6.2. altera_io_powerup 2.9.6.3. altera_io_opendrain
2.10. Guidelines for Intel FPGA IP Cores and Architecture-Specific Features x
2.10.1. Instantiating Intel FPGA IP Cores with the IP Catalog 2.10.2. Including Files for Intel® Quartus® Prime Placement and Routing Only 2.10.3. Inferring Intel FPGA IP Cores from HDL Code
2.10.1. Instantiating Intel FPGA IP Cores with the IP Catalog x
2.10.1.1. Instantiating Intel FPGA IP Cores with IP Catalog Generated Verilog HDL Files 2.10.1.2. Instantiating Intel FPGA IP Cores with IP Catalog Generated VHDL Files 2.10.1.3. Changing Synplify’s Default Behavior for Instantiated Intel FPGA IP Cores 2.10.1.4. Instantiating Intellectual Property with the IP Catalog and Parameter Editor 2.10.1.5. Instantiating Black Box IP Cores with Generated Verilog HDL Files 2.10.1.6. Instantiating Black Box IP Cores with Generated VHDL Files 2.10.1.7. Other Synplify Software Attributes for Creating Black Boxes
2.10.3. Inferring Intel FPGA IP Cores from HDL Code x
2.10.3.1. Inferring Multipliers 2.10.3.2. Inferring RAM 2.10.3.3. RAM Initialization 2.10.3.4. Inferring ROM 2.10.3.5. Inferring Shift Registers
2.10.3.1. Inferring Multipliers x
2.10.3.1.1. Resource Balancing 2.10.3.1.2. Controlling the DSP Block Inference 2.10.3.1.3. Signal Level Attribute
1. Mentor Graphics Precision* Synthesis Support
2. Synopsys Synplify* Support
A. Intel® Quartus® Prime Pro Edition User Guides

2.9.3.3. Input and Output Delays

Specify the input and output delays for the ports of a design in the Input/Output tab of the SCOPE window, or with the define_input_delay and define_output_delay attributes. The Synplify software does not allow you to assign the tCO and tSU values directly to inputs and outputs. However, a tCO value can be inferred by setting an external output delay; a tSU value can be inferred by setting an external input delay.
Relationship Between tCO and the Output Delay
tCO = clock period – external output delay
Relationship Between tSU and the Input Delay
tSU = clock period – external input delay

When the syn_forward_io_constraints attribute is set to 1, the Synplify software passes the external input and output delays to the Intel® Quartus® Prime software using NativeLink integration. The Intel® Quartus® Prime software then uses the external delays to calculate the maximum system frequency.

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