BCM7318
®
IP SET-TOP BOX SINGLE-CHIP DECODER
FEATURES
•
Data Transport Processor
SUMMARY OF BENEFITS
•
Provides a cost-effective solution for IP-based applications that
•
•
•
require MPEG2 A/V decoding.
Fully Integrated MPEG2 A/V decoder, MIPS CPU, Ethernet
controller, and peripherals for complete set-top box system.
- Low-cost solution for next-generation IP set-top boxes.
Fully integrated USB 2.0 Host Controller with 2 port Physical
Interface on-chip.
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.
Industry-leading third-party operating systems, tool chains and
middleware supported.
- Support for DIRECTV and MPEG transport streams
- DES/DVB descrambler
- Supports NDS ICAM, XTV and VGS
- 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 x video and H/W cursor planes
- 2D video-scaling support
- Integrated PAL/NTSC/SECAM encoder
- ITU-656 input support
- Paxel™ graphics engine
•
•
•
•
MIPS32
TM
CPU Core at 266 MHz
- MMU support
- MIPS16e
TM
ASE support
- EJTAG debug support
•
IDE Host Adapter
- ATA 5 command set, Ultra ATA-66 I/F
•
Integrated 10/100 Ethernet Controller + Phy
BCM7318 Single-Chip System Block Diagram
Flash
DDR
CVBS
RJ-45
Ethernet
RGB
Y/C
BCM7318
MAFE/
Modem
Audio L/R
IR Tx
UHF / IR Rx
FP/Keypad
USB 2.0 Device
HDD
OVERVIEW
DUAL ISO 7816
FLASH / IO IF
DDR 16-BIT/32-BIT I/F
ETHERNET
CONTROLLER
MAC + PHY
CONDITIONAL
ACCESS
MODULE
ARBITER / DMA
MEMORY CONTROLLER
USB 2.0 HOST CONTROLLER
2 x PORTS WITH PHY
ENCRYPT/
DECRYPT MODULE
AES128, DES/ 3DES
CSS, CPRM, DTCP,
VGS
COMPOSITE
SECURITY
MODULE
WITH OTP
MPEG 2 VIDEO
DECODER
BROADCOM
2D GRAPHICS
PAXEL
VIDEO
ENCODER
6 DACs
S-VIDEO
RGB
DVB/DIRECTV
TRANSPORT
DVB/DES
DESCRAMBLER
TS INPUT
AUDIO
DECODER
MUSICAM /
DOLBY AC3
AUDIO ENGINE
AUDIO
STEREO
DACs
R/L SPDIF
SiLABS
System Side
DAA Module
PVR ENGINE
PLAY/RECORD
MIPS32 / 16e
266 MHz
32KI / 32 KD
ON-CHIP
BOOT ROM
16 KB
PERIPHERALS BLOCK
IR Rx (2x) / Tx
Counters
SPI
CCIR 656 I/P
GPIOs
PWM
I2C Master
I2S I/P
IDE I/F
EJTAG
The BCM7318 is a fully integrated MPEG2 single-chip solution targeted
specifically at the emerging IP-STB market.
The BCM7318 integrates existing volume production technologies from
within Broadcom’s cable, satellite and networking groups. By
combining these technologies together, the BCM7318 offers a low-cost
solution to satisfy the IP-STB marketplace.
The BCM7318 design is based on unified memory architecture, (UMA),
utilizing a 133 MHz, 16- or 32-bit wide Double Data Rate (DDR)
memory interface for added system performance.
It is capable of decoding transport streams delivered via the fully
integrated 10/100 Mbit Ethernet controller, or via the IDE ATA host I/F
from an external hard disk drive, or from an external TS input source
such as a DVB-C/S or T NIM.
The BCM7318 offers very high levels of integration for reduced system
BOM, including USB 2.0 Host + Physical I/F, 100BaseT Ethernet,
Stereo Audio DACs, Video Line Drivers, VCXOs and an internal 1.3V
voltage regulator. For further cost saving, the BCM7318 integrates
Silicon Labs’ Si305x SSD device for SW Modem applications.
The BCM7318 includes Broadcom’s advanced 2D graphics engine with
integrated Paxel, offering true studio-quality text and graphics with
extremely efficient use of memory and bandwidth. The Paxel can be used
for hardware acceleration of graphic functions, thereby offering the
ultimate user experience for GUI applications.
The BCM7318 includes a complete industry standard MIPS32
microprocessor subsystem, including 32 Kbytes instruction and data
caches. The CPU operates at 266 MHz, offering over 340-DMIPS rating.
The architecture also includes the MIPS16e Application-Specific
Extension for code compaction.
A full range of peripheral features are supported including UARTs, dual
ISO 7816 smart cards I/F, GPIO, counters/ timers, IR Tx/Rx, I2C and
SPI controllers.
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
© 2004 by BROADCOM CORPORATION. All rights reserved.
7318-PB00-R
11/01/04
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
Microchip MCU
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