Intel® Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series

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ID 683780
Date 2/20/2023
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Document Table of Contents
Document Table of Contents x
1. Intel® Agilex™ 7 F-Series and I-Series General-Purpose I/O Overview 2. Intel® Agilex™ 7 F-Series and I-Series GPIO Banks 3. Intel® Agilex™ 7 F-Series and I-Series HPS I/O Banks 4. Intel® Agilex™ 7 F-Series and I-Series SDM I/O Banks 5. Intel® Agilex™ 7 F-Series and I-Series I/O Troubleshooting Guidelines 6. Intel® Agilex™ 7 F-Series and I-Series General-Purpose I/O IPs 7. Programmable I/O Features Description 8. Documentation Related to the Intel® Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series 9. Document Revision History for the Intel® Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series
1. Intel® Agilex™ 7 F-Series and I-Series General-Purpose I/O Overview x
1.1. Package Selection and I/O Vertical Migration Support 1.2. Types of I/O Banks
2. Intel® Agilex™ 7 F-Series and I-Series GPIO Banks x
2.1. GPIO Bank Overview 2.2. GPIO Features 2.3. GPIO Implementation Guide 2.4. GPIO Termination 2.5. GPIO Design Guidelines 2.6. GPIO Simulation
2.1. GPIO Bank Overview x
2.1.1. GPIO Bank Structure 2.1.2. GPIO Buffers and Registers
2.2. GPIO Features x
2.2.1. Supported I/O Standards for GPIO Banks 2.2.2. GPIO Buffer Behavior 2.2.3. Programmable I/O Element Features for the GPIO Bank
2.2.3. Programmable I/O Element Features for the GPIO Bank x
2.2.3.1. Guidelines: Programmable Output Slew Rate Control 2.2.3.2. Guidelines: Programmable Open-Drain Output 2.2.3.3. Guidelines: Programmable Bus-Hold 2.2.3.4. Guidelines: Programmable Pull-Up Resistor 2.2.3.5. Guidelines: Programmable De-Emphasis
2.3. GPIO Implementation Guide x
2.3.1. I/O Assignments with the Intel® Quartus® Prime Assignment Editor 2.3.2. Assigning Pin I/O Standards in the Intel® Quartus® Prime Pin Planner
2.3.1. I/O Assignments with the Intel® Quartus® Prime Assignment Editor x
2.3.1.1. Assigning Pin I/O Standards in the Intel® Quartus® Prime Assignment Editor 2.3.1.2. Assigning Programmable IOE Features in the Intel® Quartus® Prime Assignment Editor 2.3.1.3. GPIO Programmable IOE Features Assignment Names and Settings
2.4. GPIO Termination x
2.4.1. Single-Ended I/O Termination in F-Series and I-Series Devices 2.4.2. True Differential Signaling I/O Termination
2.4.1. Single-Ended I/O Termination in F-Series and I-Series Devices x
2.4.1.1. Single-Ended I/O Standard OCT Termination 2.4.1.2. OCT Calibration Block 2.4.1.3. Single-Ended I/O Standards External Termination 2.4.1.4. Single-Ended I/O Termination Implementation Guide
2.4.1.1. Single-Ended I/O Standard OCT Termination x
2.4.1.1.1. RS OCT 2.4.1.1.2. RT OCT 2.4.1.1.3. Dynamic OCT
2.4.1.4. Single-Ended I/O Termination Implementation Guide x
2.4.1.4.1. Configuring OCT Using the Assignment Editor 2.4.1.4.2. OCT Features Assignment Names and Settings
2.4.2. True Differential Signaling I/O Termination x
2.4.2.1. True Differential Signaling I/O Standard OCT Termination 2.4.2.2. True Differential Signaling I/O Standard External Termination
2.4.2.1. True Differential Signaling I/O Standard OCT Termination x
2.4.2.1.1. Configuring Differential Input RD OCT Using the Assignment Editor 2.4.2.1.2. Guidelines: Differential Input RD OCT
2.5. GPIO Design Guidelines x
2.5.1. VREF Sources and VREF Pins 2.5.2. I/O Standards Implementation Based on VCCIO_PIO Voltages 2.5.3. OCT Calibration Block Requirement 2.5.4. I/O Pins Placement Requirements 2.5.5. I/O Standard Selection and I/O Bank Supply Compatibility Check 2.5.6. Simultaneous Switching Noise 2.5.7. Special Pins Requirement 2.5.8. External Memory Interface Pin Placement Requirements 2.5.9. HPS Shared I/O Requirements 2.5.10. Clocking Requirements 2.5.11. SDM Shared I/O Requirements 2.5.12. Unused Pins 2.5.13. Voltage Setting for Unused GPIO Banks 2.5.14. GPIO Pins During Power Sequencing 2.5.15. Drive Strength Requirement for GPIO Input Pins 2.5.16. Maximum DC Current Restrictions 2.5.17. 1.2 V I/O Interface Voltage Level Compatibility 2.5.18. GPIO Pins for the Avalon® Streaming Interface Configuration Scheme 2.5.19. Maximum True Differential Signaling Receiver Pairs Per I/O Lane
2.6. GPIO Simulation x
2.6.1. IBIS Models 2.6.2. HSPICE* Models 2.6.3. Net Length Reports
3. Intel® Agilex™ 7 F-Series and I-Series HPS I/O Banks x
3.1. HPS I/O Bank Overview 3.2. HPS I/O Features 3.3. HPS I/O Implementation Guide 3.4. HPS I/O Design Guidelines 3.5. HPS I/O Simulation
3.2. HPS I/O Features x
3.2.1. Supported I/O Standards for HPS I/O Banks 3.2.2. HPS I/O Buffer Behavior 3.2.3. Programmable I/O Element Features for the HPS I/O Bank
3.3. HPS I/O Implementation Guide x
3.3.1. Configuring Open Drain Feature for the HPS I/O 3.3.2. I/O Assignments with the Intel® Quartus® Prime Assignment Editor 3.3.3. Assigning Pin I/O Standards in the Intel® Quartus® Prime Pin Planner
3.3.2. I/O Assignments with the Intel® Quartus® Prime Assignment Editor x
3.3.2.1. Assigning Programmable IOE Features in the Intel® Quartus® Prime Assignment Editor 3.3.2.2. HPS I/O Programmable IOE Features Assignment Names and Settings
3.4. HPS I/O Design Guidelines x
3.4.1. Unused Pins 3.4.2. HPS I/O Pins During Power Sequencing 3.4.3. HPS Shared I/O Requirements
3.5. HPS I/O Simulation x
3.5.1. HPS IBIS Models 3.5.2. Net Length Reports
4. Intel® Agilex™ 7 F-Series and I-Series SDM I/O Banks x
4.1. SDM I/O Bank Overview 4.2. SDM I/O Features 4.3. SDM I/O Design Guidelines 4.4. SDM I/O Simulation
4.2. SDM I/O Features x
4.2.1. Supported I/O Standards for SDM I/O Banks 4.2.2. SDM I/O Buffer Behavior 4.2.3. I/O Standards and Features for Configuration Pins
4.3. SDM I/O Design Guidelines x
4.3.1. Unused Pins 4.3.2. SDM I/O Pins During Power Sequencing
4.4. SDM I/O Simulation x
4.4.1. SDM IBIS Models 4.4.2. Net Length Reports
6. Intel® Agilex™ 7 F-Series and I-Series General-Purpose I/O IPs x
6.1. GPIO Intel® FPGA IP 6.2. OCT Intel® FPGA IP
6.1. GPIO Intel® FPGA IP x
6.1.1. Release Information for GPIO Intel® FPGA IP 6.1.2. Generating the GPIO Intel® FPGA IP 6.1.3. GPIO Intel® FPGA IP Parameter Settings 6.1.4. GPIO Intel® FPGA IP Interface Signals 6.1.5. GPIO Intel® FPGA IP Architecture 6.1.6. Verifying Resource Utilization and Design Performance 6.1.7. GPIO Intel® FPGA IP Timing 6.1.8. GPIO Intel® FPGA IP Design Examples
6.1.2. Generating the GPIO Intel® FPGA IP x
6.1.2.1. Intel® FPGA IP Generation Output
6.1.3. GPIO Intel® FPGA IP Parameter Settings x
6.1.3.1. Guideline: Swap datain_h and datain_l Ports in Migrated IP
6.1.4. GPIO Intel® FPGA IP Interface Signals x
6.1.4.1. Shared Signals 6.1.4.2. Data Bit-Order for Data Interface 6.1.4.3. Input and Output Bus High and Low Bits 6.1.4.4. Data Interface Signals and Corresponding Clocks
6.1.5. GPIO Intel® FPGA IP Architecture x
6.1.5.1. GPIO Intel® FPGA IP Data Paths 6.1.5.2. Register Packing
6.1.5.1. GPIO Intel® FPGA IP Data Paths x
6.1.5.1.1. Input Path 6.1.5.1.2. Output and Output Enable Paths
6.1.7. GPIO Intel® FPGA IP Timing x
6.1.7.1. Timing Components 6.1.7.2. Delay Elements 6.1.7.3. Timing Analysis 6.1.7.4. Timing Closure Guidelines
6.1.7.3. Timing Analysis x
6.1.7.3.1. Single Data Rate Input Register 6.1.7.3.2. Full-Rate or Half-Rate DDIO Input Register 6.1.7.3.3. Single Data Rate Output Register 6.1.7.3.4. Full-Rate or Half-Rate DDIO Output Register
6.1.8. GPIO Intel® FPGA IP Design Examples x
6.1.8.1. GPIO Intel® FPGA IP Synthesizable Intel® Quartus® Prime Design Example 6.1.8.2. GPIO Intel® FPGA IP Simulation Design Example
6.2. OCT Intel® FPGA IP x
6.2.1. Release Information 6.2.2. Generating the OCT Intel® FPGA IP 6.2.3. OCT Intel® FPGA IP Parameter Settings 6.2.4. OCT Intel® FPGA IP Signals 6.2.5. QSF Assignments 6.2.6. OCT Intel® FPGA IP Architecture 6.2.7. OCT Intel® FPGA IP Design Example
6.2.2. Generating the OCT Intel® FPGA IP x
6.2.2.1. Intel® FPGA IP Generation Output
6.2.7. OCT Intel® FPGA IP Design Example x
6.2.7.1. Generating the Intel® Quartus® Prime Design Example
7. Programmable I/O Features Description x
7.1. Programmable Pre-Emphasis 7.2. Programmable De-Emphasis 7.3. Programmable Differential Output Voltage
1. Intel® Agilex™ 7 F-Series and I-Series General-Purpose I/O Overview
2. Intel® Agilex™ 7 F-Series and I-Series GPIO Banks
3. Intel® Agilex™ 7 F-Series and I-Series HPS I/O Banks
4. Intel® Agilex™ 7 F-Series and I-Series SDM I/O Banks
5. Intel® Agilex™ 7 F-Series and I-Series I/O Troubleshooting Guidelines
6. Intel® Agilex™ 7 F-Series and I-Series General-Purpose I/O IPs
7. Programmable I/O Features Description
8. Documentation Related to the Intel® Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series
9. Document Revision History for the Intel® Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series

7.2. Programmable De-Emphasis

To compensate for signal degradation over long transmission path, you can alter the signal amplitude through the programmable de-emphasis feature.
Table 64.  Programmable De-emphasis Feature Description
Item Description
Availability

Available for an external memory interface implementation with the following conditions:

  • The slew rate is Fast.
  • The I/O standard is single-ended or differential SSTL12, HSTL12, HSUL12, or POD12.
Implementation

Two-tap de-emphasis implementation:

  • A main tap.
  • A delayed post tap at 1 UI or 0.5 UI, depending on the interface clock frequency.
Behavior

If turned on, the feature attenuates the I/O signal height, for the following interface clock frequency ranges, when the symbol is longer than the specified durations:

  • Below 600 MHz—the de-emphasis effect affects the symbol after 0.5 UI.
  • Above 600 MHz—the de-emphasis effect affects the symbol after 1 UI.
Types
  • Constant impedance de-emphasis:
    • Available for single-ended and differential SSTL-12, HSTL-12, and HSUL-12 I/O standards.
    • Provides double the effective equalization level of the low power de-emphasis.
    • Three equalization settings: low, medium, and high.
  • Low power de-emphasis:
    • Available for single-ended and differential SSTL-12, HSTL-12, HSUL-12, and POD12 I/O standards.
    • Three equalization settings: low, medium, and high.
Recommendations
  • The de-emphasis effect reduces eye height. If you use a non-default de-emphasis setting, perform an IBIS or HSPICE simulation to estimate the I/O buffer's electrical performance.
  • To get the optimal setting for your design, start the simulation with the lowest de-emphasis setting. Then, fine-tune the setting until you get the best signal integrity condition.
Figure 53. De-emphasis Off: Signal Attenuation for SSTL and HSTL I/O Standards
Figure 54. Constant Impedance De-emphasis: Signal Attenuation for SSTL and HSTL I/O Standards
Figure 55. Low Power De-emphasis: Signal Attenuation for SSTL and HSTL I/O Standards
Figure 56. De-emphasis Off: Signal Attenuation for POD12 I/O Standard
Figure 57. Low Power De-emphasis: Signal Attenuation for POD12 I/O Standard
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