Refer to the PDF data sheet for device specific package drawings
SerDes'es goal is to convert device (SoC) parallel data into serialized data that can be output over a highspeed electrical interface. In the opposite direction, SerDes converts high-speed serial data into parallel data that can be processed by the device. To this end, the SerDes contains a variety of functional blocks to handle both the external analog interface as well as the internal digital logic.
For more information, see Serializer/Deserializer (SerDes) section in Peripherals chapter in the device TRM.