BCM7317中文资料

SINGLE-CHIP SATELLITE SET-TOP BOX DECODER

BCM7317 Single-Chip System Block Diagram

?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

?Provides a cost-effective solution for direct broadcast satellite (DBS) applications

?Fully integrated QPSK receiver, MPEG2 A/V decoder, MIPS CPU and peripherals for a complete set-top box system

-Low-cost solution for next generation Set-Top boxes ?Fully integrated USB 2.0 host controller with two-port physical interface on-chip

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PVR capability enables personal viewing and scheduling, video-on-demand (VOD), and VCR “trick mode” effects on any video stream

-Encryption ensures copy protection of recorded programming content

-Simultaneous support for record and playback

?Advanced 2D graphics system allows applications such as internet browsers and electronic program guides to deliver studio-quality text and graphics on television monitors ?Broadcom-developed device drivers enable rapid software development cycle with support of industry-standard operation systems

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Industry-leading third-party operating systems, tool chains and middleware supported, including OpenTV, NDS’s XTV

PVR systems

F E A T U R E S

S U M M A R Y O F B E N E F I T S

O V E R V I E

W

Phone: 949-450-8700Fax: 949-450-8710

E-mail:info@https://www.wendangku.net/doc/942547643.html, Web:https://www.wendangku.net/doc/942547643.html,

BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013Irvine, California 92619-7013

? 2004 by BROADCOM CORPORATION. All rights reserved.7317-PB02-R

03/15/04

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.

The BCM7317 is a complete single-chip that can decode transport streams, delivered either via the external BCM3430/40 CMOS Tuner or via the IDE host I/F from an external hard disk drive (or combination). It can display the resulting decoded audio and video on a television monitor connected to the set-top box.

The BCM7317 includes Broadcom’s advanced 2D graphics engine,offering true studio quality text and graphics with extremely efficient use of memory and bandwidth.

The BCM7317 also incorporates a complete industry-standard MIPS32?-based microprocessor subsystem, including an 8-KB instruction cache and 8-KB data cache. Internal bridges to memory and local busses provide support for external peripherals on-chip as well as off-chip.

A full range of peripheral devices is supported on the BCM7317,including UARTs, dual ISO7816 smart cards I/F, GPIO, counters/timers, IR Tx/Rx, I 2C and SPI controllers, and a US

B 2.0 host controller with two ports and integrated physical I/F, saving the cost of an external