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

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ID 683780
Date 6/14/2022
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Document Table of Contents
Document Table of Contents x
1. Intel Agilex General-Purpose I/O Overview 2. Intel® Agilex™ General-Purpose I/O Banks 3. Intel® Agilex™ HPS I/O Banks 4. Intel® Agilex™ SDM I/O Banks 5. Intel® Agilex™ I/O Troubleshooting Guidelines 6. Intel® Agilex™ General-Purpose I/O IPs 7. Programmable I/O Features Description 8. Documentation Related to the Intel® Agilex™ F-Series and I-Series General-Purpose I/O User Guide 9. Document Revision History for the Intel® Agilex™ F-Series and I-Series General-Purpose I/O User Guide
1. Intel Agilex 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™ General-Purpose I/O Banks x
2.1. GPIO Bank Overview 2.2. GPIO Features 2.3. GPIO Implementation Guide 2.4. Intel® Agilex™ I/O Termination 2.5. Intel® Agilex™ GPIO Design Guidelines 2.6. I/O Simulation
2.1. GPIO Bank Overview x
2.1.1. GPIO Bank Structure 2.1.2. I/O 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. Intel® Agilex™ I/O Termination x
2.4.1. Single-Ended I/O Termination in Intel® Agilex™ Devices 2.4.2. True Differential Signaling I/O Termination
2.4.1. Single-Ended I/O Termination in Intel® Agilex™ 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. Intel® Agilex™ 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. I/O Simulation x
2.6.1. IBIS Models 2.6.2. HSPICE* Models 2.6.3. Net Length Reports
3. Intel® Agilex™ 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. Intel® Agilex™ 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. Intel® Agilex™ 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™ SDM I/O Banks x
4.1. SDM I/O Bank Overview 4.2. SDM I/O Features 4.3. Intel® Agilex™ 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 Intel® Agilex™ Configuration Pins
4.3. Intel® Agilex™ 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™ 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 General-Purpose I/O Overview
2. Intel® Agilex™ General-Purpose I/O Banks
3. Intel® Agilex™ HPS I/O Banks
4. Intel® Agilex™ SDM I/O Banks
5. Intel® Agilex™ I/O Troubleshooting Guidelines
6. Intel® Agilex™ General-Purpose I/O IPs
7. Programmable I/O Features Description
8. Documentation Related to the Intel® Agilex™ F-Series and I-Series General-Purpose I/O User Guide
9. Document Revision History for the Intel® Agilex™ F-Series and I-Series General-Purpose I/O User Guide

2.5.14. GPIO Pins During Power Sequencing

Intel® Agilex™ devices do not support hot-socketing and require a specific power sequence. Design your power supply solution to properly control the complete power sequence.

Adhere to the these guidelines to prevent unnecessary current draw on the I/O pins located in the GPIO banks. These guidelines apply for unpowered, power up to power-on reset (POR), POR delay, POR delay to configuration, configuration, initialization, user mode, and power down device states.

  • The I/O pins in the GPIO banks can be tri-stated, driven to ground, or driven to the VCCIO_PIO level.
  • While the Intel® Agilex™ device is powering up or down:
    • The input signals of an I/O pin, at all times, must not exceed the I/O buffer power supply rail of the bank where the I/O pin resides.
    • If you use a pin in a GPIO bank with 1.5 V VCCIO_PIO, the pin voltage must not exceed the VCCIO_PIO rail or 1.2 V, whichever is lower.
  • While the Intel® Agilex™ device is powering up, powering down, or not turned on, the GPIO pins can tolerate a maximum of 10 mA per pin and a total of 100 mA per GPIO bank.
  • After the Intel® Agilex™ device fully powers up, the voltage levels for the GPIO pins must not exceed the DC input voltage (VI) value.
Table 18.  Guideline Examples
Condition Guideline
The VCCIO_PIO pin ramps up and at period X, the VCCIO_PIO voltage is 1.1 V. At period X, keep the signals driven by the device connected to the GPIO I/O pin at a voltage of 1.1 V or lower.
The 1.5 V VCCIO_PIO pin ramps up and the voltage continues to rise pass the 1.2 V level. Keep the GPIO pin voltage at 1.2 V or lower until the Intel® Agilex™ device fully powers up.
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