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