In order to package it as a clock IC, the Tape & Reel (TR) package is used. The uPs/uCs/Peripheral IC clock generator incoporates is CLOCK GENERATOR, PROCESSOR SPECIFIC.
SI5351C-B10408-GMR Features
SI5351C-B10408-GMR Applications
There are a lot of Silicon Labs SI5351C-B10408-GMR Clock Generators applications.