Agilex™ 7 Clocking and PLL User Guide: M-Series

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ID 769001
Date 4/01/2024
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Document Table of Contents
Document Table of Contents x
1. Agilex™ 7 FPGA M-Series Clocking and PLL Overview 2. M-Series Clocking and PLL Architecture and Features 3. M-Series Clocking and PLL Design Considerations 4. Clock Control Intel® FPGA IP Core 5. IOPLL Intel® FPGA IP Core 6. Agilex™ 7 Clocking and PLL User Guide: M-Series Archives 7. Document Revision History for the Agilex™ 7 Clocking and PLL User Guide: M-Series
1. Agilex™ 7 FPGA M-Series Clocking and PLL Overview x
1.1. Clock Networks Overview 1.2. PLLs Overview
2. M-Series Clocking and PLL Architecture and Features x
2.1. Clock Networks Architecture and Features 2.2. PLLs Architecture and Features
2.1. Clock Networks Architecture and Features x
2.1.1. Clock Network Architecture 2.1.2. Clock Resources 2.1.3. Clock Control Features
2.1.1. Clock Network Architecture x
2.1.1.1. Clock Network Hierarchy 2.1.1.2. Clock Sectors 2.1.1.3. Programmable Clock Routing
2.1.3. Clock Control Features x
2.1.3.1. Clock Gating 2.1.3.2. Clock Divider
2.1.3.1. Clock Gating x
2.1.3.1.1. Root Clock Gate 2.1.3.1.2. Sector Clock Gate 2.1.3.1.3. I/O PLL Clock Gate 2.1.3.1.4. LAB Clock Gate
2.2. PLLs Architecture and Features x
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
2.2.5. PLL Control Signals x
2.2.5.1. Reset 2.2.5.2. Locked
2.2.6. PLL Feedback Modes x
2.2.6.1. Direct Compensation Mode 2.2.6.2. LVDS Compensation Mode 2.2.6.3. Source Synchronous Compensation Mode 2.2.6.4. Normal Compensation Mode 2.2.6.5. Zero-Delay Buffer Mode 2.2.6.6. External Feedback Mode
2.2.11. PLL Input Clock Switchover x
2.2.11.1. Automatic Switchover 2.2.11.2. Automatic Switchover with Manual Override 2.2.11.3. Manual Clock Switchover
2.2.13. PLL Calibration x
2.2.13.1. Power-Up Calibration 2.2.13.2. User Calibration 2.2.13.3. Static Phase Error Calibration 2.2.13.4. Output Clock Duty Cycle Correction
3. M-Series Clocking and PLL Design Considerations x
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
4. Clock Control Intel® FPGA IP Core x
4.1. Release Information for Clock Control Intel® FPGA IP 4.2. Clock Control Intel® FPGA IP Core Parameters 4.3. Clock Control Intel® FPGA IP Core Ports and Signals
5. IOPLL Intel® FPGA IP Core x
5.1. Release Information for IOPLL Intel® FPGA IP 5.2. IOPLL IP Core Parameters 5.3. IOPLL IP Core Ports and Signals
5.2. IOPLL IP Core Parameters x
5.2.1. IOPLL IP Core Parameters - PLL Tab 5.2.2. IOPLL IP Core Parameters - Settings Tab 5.2.3. IOPLL IP Core Parameters - Cascading Tab 5.2.4. IOPLL IP Core Parameters - Advanced Parameters Tab
1. Agilex™ 7 FPGA M-Series Clocking and PLL Overview
2. M-Series Clocking and PLL Architecture and Features
3. M-Series Clocking and PLL Design Considerations
4. Clock Control Intel® FPGA IP Core
5. IOPLL Intel® FPGA IP Core
6. Agilex™ 7 Clocking and PLL User Guide: M-Series Archives
7. Document Revision History for the Agilex™ 7 Clocking and PLL User Guide: M-Series

4.2. Clock Control Intel® FPGA IP Core Parameters

Table 5.   Clock Control Intel® FPGA IP Core Parameters for M-Series Devices
Parameter Value Description
Number of Clock Inputs 1, 2, or 4

Specify the number of input clock sources for the clock control block. You can specify up to four clock inputs.

Clock multiplexing in M-Series devices is implemented using soft logic in the core.

For more information about the optimal clock multiplexing design, refer to the Clock Multiplexing section in the Quartus® Prime Pro Edition User Guide: Design Recommendations.

Ensure glitch free clock switchover On or Off

Turn on this option to implement a glitch-free switchover when you use multiple clock inputs. You must ensure the currently selected clock is running before switching to another source.

If the selected clock is not running, you cannot switch to the new clock source using the glitch-free switchover implementation.

By default, the clkselect port is set to 00. You must apply a clock to inclk0x to read the values on the clkselect ports.

Turning off this option implements a simple multiplexer logic. For more information about the optimal clock multiplexing design, refer to the Clock Multiplexing section in the Quartus® Prime Pro Edition User Guide: Design Recommendations.

Clock Enable On or Off Turn on this option if you want to gate your clock output with an enable signal. This option disables the option to use clock division.
Clock Enable Type Root Level or Distributed Sector Level Select the clock gates located in the periphery or the gates located in the sector. For more information about the clock gates, refer to the Clock Gating section.
Enable Register Mode Negative Latch or None Specify if the enable signal should be latched.
Clock Divider On or Off Turn on this option if you want to use the clock division block in the periphery.

This option disables the option to use clock enable.
Clock Divider Output Ports Divide 1x, Divide 1x and 2x, or Divide 1x, 2x and 4x Specify the combination of passing your clock through, dividing your clock by 2, or dividing your clock by 4.
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