The Viterbi, Complex Math, and CRC Unit (VCU) adds a whole new realm of processing power to the Control subsystem and ControlSUITE adds a VCU support library to make it easy for customers to really make full use of the VCU. The library supports both real and complex FFT butterfly calculations, as well as 8, 16, and 32-bit single cycle per byte CRCs, and it also supports a two cycle Viterbi Butterfly. The API is extremely easy to use and TI has an excellent document that details the use of the whole library.