1.8 Clocking Structure
(Ask a Question)Evaluation kit's reference designs have two clock domains. The on-board 156.25 MHz crystal oscillator drives the XCVR reference clock in 8b10b, PMA, and 64b66b designs and on-board 125 MHz crystal oscillator drives the XCVR reference clock in PMA with Bit-slip design. This provides clock source to the Data Counter and Data Checker blocks. The on-chip 160 MHz RC oscillator drives the UART_IF_0 block. The following figure shows the clocking structure in the reference design.
