OVERVIEW
The BCM7317 is a satellite set-top box system on a single-chip, integrating Broadcom’s field-proven BCM4500 QPSK Demodulator technology, as well as technology derived from Broadcom’s existing cable products (such as the BCM7115 Cable STB single chip).
The BCM7317 is a design based on a unified memory architecture, (UMA), utilizing a 133-MHz, 16-bit-wide double data rate (DDR) memory interface for added system performance.

FEATURES
• All-digital satellite receivers
    - 1 45-Mbaud variable rate receiver
    - DVB/DIRECTV®/Digicipher® II compliant FEC decoder
• Data transport processor
    - Support for DIRECTV and MPEG transport streams
    - DES/DVB descrambler
    - NDS ICAM and XTV compliant
    - Support for play/record from/to hard disk
• MPEG-ATSC compliant audio/video decoders
    - MP@ML MPEG2 video decoder
    - Decode of MPEG layer-1 and layer-2 audio
    - Support for Dolby® AC-3 and compressed PCM
• Broadcom Graphics Engine (BGE)
    - Supports three graphics, 1 video, and hardware cursor planes
    - 2D video scaling support
    - Integrated PAL/NTSC/SECAM encoder
    - ITU-656 input support
• MIPS32TM CPU core at 242 MHz
    - MMU support
    - EJTAG debug support
• IDE host adapter
    - ATA5 command set, Ultra ATA/66 I/F