The following figure shows the IOD CDR configurator.

Figure 1. IOD CDR Configuration
Table 1. IOD CDR Configuration
GUI Option Selections
Data rate User Input – 1250 Mb/s maximum
Reference Clock Asynchronous (300 PPM Rx/Tx clocking)/Synchronous 
(0 PPM Rx/TX clocking)

(Default Asynchronous)

RX Only RX Only (when checked)
Enable BITSLIP port Disabled and Enabled