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1. Agilex™ 5 Clocking and PLL Overview
2. Agilex™ 5 Clocking and PLL Architecture and Features
3. Agilex™ 5 Clocking and PLL Design Considerations
4. Clock Control Intel® FPGA IP Core
5. IOPLL Intel® FPGA IP Core
6. Document Revision History for the Clocking and PLL User Guide: Agilex™ 5 FPGAs and SoCs
2.2.1. PLL Features
2.2.2. PLL Usage
2.2.3. PLL Locations
2.2.4. PLL Architecture
2.2.5. PLL Control Signals
2.2.6. PLL Feedback Modes
2.2.7. Clock Multiplication and Division
2.2.8. Programmable Phase Shift
2.2.9. Programmable Duty Cycle
2.2.10. PLL Cascading
2.2.11. PLL Input Clock Switchover
2.2.12. PLL Reconfiguration and Dynamic Phase Shift
2.2.13. PLL Calibration
3.1. Guidelines: Clock Switchover
3.2. Guidelines: Timing Closure
3.3. Guidelines: Resetting the PLL
3.4. Guidelines: Configuration Constraints
3.5. Clocking Constraints
3.6. IP Core Constraints
3.7. Guideline: Achieving 5% Duty Cycle for fOUT_EXT ≥ 300 MHz Using tx_outclk Port from LVDS SERDES Intel® FPGA IP
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5. IOPLL Intel® FPGA IP Core
The IOPLL Intel® FPGA IP core allows you to configure the settings of the Agilex™ 5 I/O PLL.
The IOPLL IP core supports the following features:
- Supports six different clock feedback modes: direct, external feedback, normal, source synchronous, zero delay buffer, and LVDS mode.
- Generates up to four output clocks for I/O bank I/O PLL and seven output clocks for fabric-feeding I/O PLL for the Agilex™ 5 device.
- Switches between two reference input clocks.
- Supports adjacent PLL (adjpllin) input to connect with an upstream PLL in PLL dedicated cascading mode.
The IOPLL IP core is available under the Basic Functions > PLL category of the IP Catalog.