SDI II Intel® Stratix 10 FPGA IP Design Example User Guide
ID
683368
Date
12/09/2022
Public
Visible to Intel only — GUID: spu1472192379941
Ixiasoft
2.1. Parallel Loopback Design Examples
Note: For parallel loopback designs, do not share the TX PLL reference clock with the RX transceiver reference clock. The design logic tunes the TX PLL clock to match the RX recovered clock frequency. For the parallel loopback with external VCXO designs (single-rate and triple-rate), use the only 148.5 MHz on-board oscillator as the TX PLL reference clock. For the RX reference clock, use a 148.5 MHz clock from another on-board oscillator.
Figure 9. Parallel Loopback with Simplex Mode Block Diagram
Figure 10. Parallel Loopback with Simplex Mode Clocking Scheme
Figure 11. Parallel Loopback with Duplex Mode Block Diagram
Figure 12. Parallel Loopback with Duplex Mode Clocking Scheme