This differential output denotes the TX CLK generate by XPHY. The frequency of
this clock is the same as app_tx_clk. TX_D or {TX_D_P,
TX_D_N} are valid only after {TX_CLK_P,TX_CLK_N} starts toggling.
This differential output denotes the TX CLK generate by XPHY. The frequency of
this clock is the same as app_tx_clk. TX_D or {TX_D_P,
TX_D_N} are valid only after {TX_CLK_P,TX_CLK_N} starts toggling.