CPLL - 4.1 English - PG198

The CPLL operating limits vary for each transceiver type. See the device specific data sheet for more information.

The frequency out of the PLL is given by:

 

Where N = QPLL(0/1)_FBDIV and M = QPLL(0/1)_REFCLK_DIV.

To calculate the line rate use:

 

Where D = (R/T)XOUT_DIV.

Table: DRP Address Map shows the addresses of interest as well as the bits and encoding that must be used to select the correct divider values when interpreting the register content.