BCM7328
®
SINGLE-CHIP SATELLITE SET-TOP BOX DECODER
FEATURES
•
Dual On-Chip 8PSK/ Turbo Code Demodulators
- 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
- Support for 64 PIDs and 64 Section Filters
- Support for Play/ Record from/to Hard Disk
Dual MPEG-ATSC Compliant Audio/Video Decoders
- MP@ML MPEG2 Video Decoder
- Dual decode of MPEG Layer 1 & Layer 2 Audio
- Support for Dolby AC-3 and Compressed PCM
Dual Broadcom Graphics Engine (BGE)
- Supports 3 Graphics, 1 x Video & H/W Cursor planes
- 2D Video Scaling support
- Integrated PAL/NTSC/SECAM Encoder
MIPS64
TM
CPU Core @ 250 MHz
- MMU
- EJTAG Debug Interface
SUMMARY OF BENEFITS
•
Provides a cost-effective solution for Dual Decode, Direct
•
Broadcast Satellite (DBS) applications
Fully Integrated Dual 8PSK/ TC Receivers, MPEG2 A/V
decoder, MIPS CPU and peripherals for complete Set-Top Box
system
- Simultaneously supports two TVs with independent
programming and On-Screen Graphics displays
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
Industry leading Third-Party Operating Systems, Tool chains
and Middleware supported, including OpenTV, NDS’s XTV
PVR system
•
•
•
•
•
•
•
BCM7328 Single-Chip System Block Diagram
Flash
DDR
CVBS, Y/C
BCM3440
Si Tuner
RGB
RF 3/4
BCM3440
Si Tuner
MAFE/
Modem
BCM7328
Audio L/R
IR Tx
UHF/IR Rx
FP/Keypad
OVERVIEW
16-bit DDR
8PSK/TC
Receiver
ROM/Flash
Memory
Controller
Bus
Bridge
On-Chip
Boot
ROM
8 KB
8PSK/TC
Receiver
IR Tx/Rx
Keypad
Serial Ports
Modem
Interface
I/O
DMA
250-300 MHZ
MIPS64 Micro
16K I & 16K D
Dual Advanced 2D
Graphics & Video
Display Engine
Composite
Video
Encoder
and DACs
Analog
Video1
Analog
Video2
RF 3/4
I2C/PCM
MPEG2/DSS
Transport
Processor with
DVB & DES
Descramblers
Dual SD
MPEG -2 Video
Decoder
Dual
Dolby &
MPEG
Audio
Decoder
PCM
Audio
Engine
&
DACS
SPDIF
EJTAG
ISO7816 I/F
The
BCM7328
is the second-generation of Broadcom’s Dual Decode/
Dual TV set-top box system on a chip. The
BCM7328
integrates
Broadcom’s field-proven BCM4500 8PSK/TC Demodulator
technology, as well as technology derived from Broadcom’s cable
products (such as the BCM7115 cable single-chip).
The
BCM7328
memory subsystem is a unified memory architecture,
(UMA), utilizing a 150-MHz Double Data Rate (DDR) memory
interface that supports either 16-bit or 32-bit wide, depending on
required system performance.
The
BCM7328
single chip can decode two transport streams, delivered
either via the external dual BCM3440 CMOS Tuners 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
BCM7328
includes dual implementations of Broadcom’s advanced
2D graphics engine, offering true studio quality text and graphics with
extremely efficient use of memory and bandwidth
The
BCM7328
also incorporates a complete MIPS64-based
microprocessor subsystem, including 16-KB Instruction cache, 16-KB
Data cache and 2-KB Read Ahead cache. The CPU runs at 250 offering
over 250-DMIPS rating.
Broadcom
®
, the pulse logo, and
Connecting everything
®
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.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2003 by BROADCOM CORPORATION. All rights reserved.
7328-PB00-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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