High Quality Content by WIKIPEDIA articles! The Broadcom Xilleon video processor (previously branded as ATI Xilleon and later AMD Xilleon) is a 32-bit system-on-a-chip MIPS processor, for use in set-top boxes and digital TVs, providing MPEG2 decoding and other functions for major worldwide broadcast networks (including PAL, NTSC, SECAM and ATSC).