The CX06827-xx packages have an integrated microcontroller unit (MCU),
line interface codec, modem data pump, and bootloader ROM.
SC56D   = CX06827-11                         (d/f/TAM)
SC56D/S = CX06827-11 + 20437-11              (d/f/TAM/v/FDSP)
    20437-11          Voice Codec             32-pin TQFP   
  CX06827-11          ACF Modem (56kbps)     144-pin TQFP
  CX06827-13          ACF Modem (33.6kbps)   144-pin TQFP
  CX06827-14          ACF Modem (14.4kbps)   144-pin TQFP