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| BCM7320 (R) SINGLE-CHIP SATELLITE SET-TOP BOX DECODER FEATURES * Dual All-Digital Satellite Receivers - 1-45 Mbaud variable rate receiver - Integrated 7-bit A/D converters - Complies with DVB/DIRECTV(R)/Digicipher II FEC Decoder Data Transport Processor - Support for DIRECTV and MPEG transport streams - DES/DVB descrambler - Support for 64 PIDs and 64 section filters - Support for play/record from/to hard disk MPEG-ATSC Compliant Audio/Video Decoders - MP@ML MPEG-2 video decoder - Dual decode of MPEG Layer 1 and Layer 2 audio - Support for Dolby AC-3 and compressed PCM Broadcom Graphics Engine (BGE) - Supports 3 graphics, 1 x video and H/W cursor planes - 2D video scaling support - Integrated PAL/NTSC/SECAM encoder - ITU-656 input support MIPS64TM CPU Core @ 200-250 MHz - IEEE 754 compliant floating point unit - EJTAG debug support IDE Host Adapter - ATA5 command set, Ultra ATA/66 I/F SUMMARY OF BENEFITS * Provides a cost-effective solution for direct broadcast satellite (DBS) applications * Fully integrated dual QPSK receivers, MPEG-2 A/V decoder, MIPSTM CPU and peripherals for complete set-top box system - Simultaneously supports two TVs with independent. programming and on-screen graphics displays 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 dual stream Record & 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 operating systems Subsystems are based on Broadcom's field-proven production available technologies. * * * * * * * * * BCM7320 Single-Chip System Block Diagram Dual Smartcard Flash BCM3440 CMOS Tuner SDRAM BCM7320 BCM3440 CMOS Tuner Dual Video Output Dual Audio Output Dual PVR OVERVIEW HSI Data Port Satellite 1 Transport In 1 Satellite 2 Transport In 2 Transport In 3 QPSK QPSK XPORT MiniTitan MPEG Video Decoder Graphics NTSC/ PAL/ SECAM Video Encoders (2) CCIR 656 Video 1 Video 2 Video DACs ADP I S Audio In I2S Audio Out SPDIF MIPS CPU R5K 2 Audio DACs (4) Audio 1 Left / Right Audio 2 Left / Right Audio Decoder V.90 Modem USB IDE Host I/F Host IDE Controller ISO7816 (2) EBI EJTAG DDR-SDRAM Controller Peripheral Smart Card ROM (FLASH) Test ICE DDR-DRAM IR/LED/KEY/uART SPI/I2C/GPIO/PWM The BCM7320 is a satellite set-top box system on a chip, integrating Broadcom's field-proven BCM4500 QPSK demodulator technology, as well as technology derived from Broadcom's cable products (such as the BCM7115 cable single chip device). The BCM7320 is designed based on a unified memory architecture, (UMA), utilizing double data rate (DDR) memory, either 16-bit or 32-bit wide, depending on required performance. The BCM7320 is the first complete single chip that can decode two transport streams, delivered either via the external dual BCM3440 CMOS tuners or via the IDE host I/F from an external hard disk drive, (or combination), and display the resulting decoded audio and video on two independent TV monitors connected to the set-top box. A channel 3- 4 RF modulator is also included on-chip. The video encoder supports NTSC/PAL & SECAM with optional Macrovision 7.1. The BCM7320 includes Broadcom's advanced 2D graphics engine, offering true studio quality text and graphics with extremely efficient use of memory and bandwidth The BCM7320 also incorporates a complete MIPS64-based microprocessor subsystem, including 32-KB Instruction cache, 32-KB Data cache and 2-KB Read Ahead 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 are supported on the BCM7320, including UARTs, dual ISO7816 smart card I/F's, GPIO, counters/ timers, IR Tx/Rx, I2C and SPI controllers. Broadcom(R), the pulse logo, and Connecting everything(R) are trademarks of Broadcom Corporation and/ or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the property of their respective owners. (R) BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 (c) 2003 by BROADCOM CORPORATION. All rights reserved. 7320-PB02-R 12/29/03 Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com |
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