Refer to the PDF data sheet for device specific package drawings
The audio tracking logic (ATL) is used by HD Radio™ applications to synchronize the digital audio output to the baseband clock. This same IP can also be used generically to track errors between two reference signals (such as frame syncs) and generate a modulated clock output (using software-controlled cycle stealing) which averages to some desired frequency. This process can be used as a hardware assist for asynchronous sample rate conversion algorithms. The tracking range is limited, so direct conversion between the two standard sample rate groups frequencies from 44.1 to 48 kHz is not possible.
For more information, see ATL section in the device TRM.