Transceiver Interfaces (Common Settings)

Portions of the transceiver interfaces are common (or shared) among protocols, for example the internal transceiver PLLs. If you are using the transceiver for PCIe, you cannot use it for another protocol at the same time. With the Ethernet and PMA Direct protocols however, you can combine them in a quad, using some lanes for one protocol and other lanes for a second one. When sharing the transceiver among protocols, you need to be aware of common settings and rules as described in the following topics.