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Visible to Intel only — GUID: nik1398707198417
Ixiasoft
6.11.2.3. CDR and CMU Reference Clock Switching
Before initiating a reference clock switch, ensure that your CDR and CMU defines more than one reference clock source. For the CDR, specify the parameter on the RX PMA tab during the Native PHY IP parameterization. For the CMU, specify the Number of PLL reference clocks under the PLL tab when parameterizing the CMU PLL.
The following table describes the addresses and bits for switching CDR and CMU reference clock inputs. The number of exposed rx_cdr_refclk (CDR) or pll_refclk (CMU) varies according to the number of reference clocks you specify. Use the CMU reconfiguration interface for switching the CMU reference clock.
Native PHY Port | Description | Address | Bits |
---|---|---|---|
cdr_refclk0 | Represents logical refclk0. Lookup register |