PHY Lite for Parallel Interfaces Intel® FPGA IP User Guide
ID
683716
Date
1/12/2024
Public
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1. About the PHY Lite for Parallel Interfaces IP
2. PHY Lite for Parallel Interfaces Intel® FPGA IP (phylite_ph2) for Intel Agilex® 7 M-Series Devices
3. PHY Lite for Parallel Interfaces Intel® FPGA IP (altera_phylite_s20) for Intel Agilex® 7 F-Series and I-Series Devices
4. PHY Lite for Parallel Interfaces Intel® FPGA IP for Intel® Stratix® 10 Devices
5. PHY Lite for Parallel Interfaces Intel® FPGA IP for Intel® Arria® 10 and Intel® Cyclone® 10 GX Devices
6. PHY Lite for Parallel Interfaces Intel® FPGA IP User Guide Document Archives
7. Document Revision History for the PHY Lite for Parallel Interfaces Intel® FPGA IP User Guide
3.2.1. Intel Agilex® 7 F-Series and I-Series I/O Sub-bank Interconnects
3.2.2. Intel Agilex® 7 F-Series and I-Series Input DQS/Strobe Tree
3.2.3. PHY Lite for Parallel Interfaces Intel® FPGA IP for Intel Agilex® 7 F-Series and I-Series Devices Top Level Interfaces
3.2.4. Dynamic Reconfiguration
3.2.5. I/O Timing
4.5.6.4.1. Timing Closure: Dynamic Reconfiguration
4.5.6.4.2. Timing Closure: Input Strobe Setup and Hold Delay Constraints
4.5.6.4.3. Timing Closure: Output Strobe Setup and Hold Delay Constraints
4.5.6.4.4. Timing Closure: Non Edge-Aligned Input Data
4.5.6.4.5. I/O Timing Violation
4.5.6.4.6. Internal FPGA Path Timing Violation
5.5.6.4.1. Timing Closure: Dynamic Reconfiguration
5.5.6.4.2. Timing Closure: Input Strobe Setup and Hold Delay Constraints
5.5.6.4.3. Timing Closure: Output Strobe Setup and Hold Delay Constraints
5.5.6.4.4. Timing Closure: Non Edge-Aligned Input Data
5.5.6.4.5. I/O Timing Violation
5.5.6.4.6. Internal FPGA Path Timing Violation
2.2.1.1. Clocks
The PHY Lite for Parallel Interfaces Intel® FPGA IP for Intel Agilex® 7 M-Series devices sources the reference clock from a dedicated clock pin to the PLL inside the IP. This PLL provides four clock domains for the output and input paths.
Clock Domain | Description |
---|---|
Core clock | The IP generates this clock internally and uses it for all transfers between the FPGA core fabric and I/O banks. The clock phase alignment (CPA) circuitry keeps the clock in phase with the PHY clock for transfers between the core and the periphery. |
PHY clock | The IP uses this clock internally for PHY circuitry. |
VCO clock | The PLL generates this clock internally. The input and output paths use the VCO clock to generate interpolator delays that compensate for PVT variations. |
Interface clock | This is the clock frequency of the external device connected to the FPGA I/Os. |
Interface Frequency (MHz) | Core Clock Rate (PHYLITE_IN_RATE) | VCO Frequency Multiplier Factor (PHYLITE_OUT_RATE) | VCO Clock Frequency (MHz) | PHY Clock (MHz) | Core Clock Frequency (MHz) |
---|---|---|---|---|---|
600-1250 | 4 | 1 | 600-1250 | 300-625 | 150-312.5 |
300-600 | 2 | 2 | 600-1200 | 300-600 | 150-300 |
150-300 | 1 | 4 | 600-1200 | 300-600 | 150-300 |
Note: The core clock rate of the PHY Lite for Parallel Interfaces Intel® FPGA IP is fixed based on selected interface frequency.