6842 - SGMII for Nexus FPGAs: What is the usage of "clk_gddr_o"?
The purpose of clk_gddr_o is to serve as clock source to another chip outside the FPGA. Do take note that this output clock is synchronous with ser_tx_o. Another thing, the clock source of clk_gddr_o is coming from the PLL + DDR module (with ...