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1. Agilex™ 7 F-Series and I-Series General-Purpose I/O Overview
2. Agilex™ 7 F-Series and I-Series GPIO Banks
3. Agilex™ 7 F-Series and I-Series HPS I/O Banks
4. Agilex™ 7 F-Series and I-Series SDM I/O Banks
5. Agilex™ 7 F-Series and I-Series I/O Troubleshooting Guidelines
6. Agilex™ 7 F-Series and I-Series General-Purpose I/O IPs
7. Programmable I/O Features Description
8. Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series User Guide Archives
9. Documentation Related to the Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series
10. Document Revision History for the 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
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2.1.2. GPIO Buffers and Registers
The I/O registers consist of three different paths.
- The input path for handling data from the input pin to the core
- The output path for handling data from the core to the output pin
- The output enable (OE) path for handling the OE signal to the output buffer
The I/O registers allow fast source-synchronous register-to-register transfers and resynchronizations. To use the I/O registers to implement double data rate (DDR) circuitry, you can use the GPIO Intel® FPGA IP.
The input and output paths contain the following blocks:
- Input registers:
- Support half or full rate data transfer from the periphery to the core
- Support double or single data rate data captured from I/O buffer
- Output registers:
- Support half or full rate data transfer from the core to the periphery
- Support double or single data rate data transfer to the I/O buffer
- OE registers:
- Support the output enable signal from the core to the periphery
- Support double data rate or single data rate data transfer to the I/O buffer
The input and output paths also support the following features:
- Clock enable
- Asynchronous or synchronous reset
- Bypass mode for input and output paths
- Delay chain on input and output paths
Figure 3. I/O Element (IOE) Structure of F-Series and I-Series GPIO
Related Information