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1. About the PHY Lite for Parallel Interfaces IP
2. PHY Lite for Parallel Interfaces FPGA IP for Agilex™ 5 D-Series and E-Series Devices
3. PHY Lite for Parallel Interfaces FPGA IP for Agilex™ 7 M-Series Devices
4. PHY Lite for Parallel Interfaces FPGA IP for Agilex™ 7 F-Series and I-Series Devices
5. PHY Lite for Parallel Interfaces FPGA IP for Stratix® 10 Devices
6. PHY Lite for Parallel Interfaces FPGA IP for Arria® 10 and Cyclone® 10 GX Devices
7. PHY Lite for Parallel Interfaces FPGA IP User Guide Document Archives
8. Document Revision History for the PHY Lite for Parallel Interfaces FPGA IP User Guide
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
6.5.6.4.1. Timing Closure: Dynamic Reconfiguration
6.5.6.4.2. Timing Closure: Input Strobe Setup and Hold Delay Constraints
6.5.6.4.3. Timing Closure: Output Strobe Setup and Hold Delay Constraints
6.5.6.4.4. Timing Closure: Non Edge-Aligned Input Data
6.5.6.4.5. I/O Timing Violation
6.5.6.4.6. Internal FPGA Path Timing Violation
2.5.2.4. Write Test
When the tester is in the STATE_TEST_WRITE, it asserts the wrdata_en which drives the pl_wrdata_en. The PHY Lite Interface module delays the enable by one cycle to allow for the preamble. A burst counter counts until reaching TESTER_NUM_BURSTS. While outputting data, we also advance the PRBS to generate new random data. After the burst counter finishes counting, wrdata_finish is asserted. In the write test, handshaking happens in the I/O model. The relevant signals are shown in the following figure.
Figure 33. Write Test Signals