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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
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
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
8. Documentation Related to the Intel® Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series
2.5.14. GPIO Pins During Power Sequencing
F-Series and I-Series 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 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 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 device fully powers up, the voltage levels for the GPIO pins must not exceed the DC input voltage (VI) value.
|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 device fully powers up.|
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