3.2.7 PF_XCVR_REF_CLK

PF_XCVR_REF_CLK generates the fabric clock and the reference clock for the transceiver and the TX_PLL. The transceiver reference clock (PF_XCVR_REF_CLK) is a hard IP block that provides a reference clock (REF_CLK) of 156.25 MHz to the transmit PLL and a fabric reference clock (FAB_REF_CLK) which is provided as input to the Clock Conditioning Circuit (CCC) to generate the PCLK (for configuration) and I_SYS_CLK of CORE10GMAC.