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1. About the PHY Lite for Parallel Interfaces IP
2. PHY Lite for Parallel Interfaces Intel Agilex FPGA IP
3. PHY Lite for Parallel Interfaces Intel Stratix 10 FPGA IP
4. PHY Lite for Parallel Interfaces Intel Arria 10 and Intel Cyclone 10 GX FPGA IPs
5. PHY Lite for Parallel Interfaces Intel® FPGA IP User Guide Document Archives
6. Document Revision History for the PHY Lite for Parallel Interfaces IP User Guide
3.5.6.4.1. Timing Closure: Dynamic Reconfiguration
3.5.6.4.2. Timing Closure: Input Strobe Setup and Hold Delay Constraints
3.5.6.4.3. Timing Closure: Output Strobe Setup and Hold Delay Constraints
3.5.6.4.4. Timing Closure: Non Edge-Aligned Input Data
3.5.6.4.5. I/O Timing Violation
3.5.6.4.6. Internal FPGA Path Timing Violation
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
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2.2.4.3.3. Input DQ/DQS Delay Chains Maximum Values
The full range may not be usable. The absolute range is ranged from 0–511 (2 cycles). The usable range depends on PLL frequency, temperature, and voltage. To find the usable range, perform the write and read-back operations to ensure if that value applies or needs to be lowered.
Assuming that the usable range has a maximum value of k and you write a value A, you can read back the value based on the following conditions:
- If A < k, where the value you write is under the upper limit, you read back the same value (readdata=A).
- If A > k, where the value you write is over the upper limit, you read back the upper limit value. (readdata=k).