O V ERVI EW

®

Phone: 949-926-5000

Fax: 949-926-5203

E-mail: info@broadcom.com

Web: www.broadcom.com

BROADCOM CORPORATION

5300 California Avenue

Irvine, California 92617

© 2008 by BROADCOM CORPORATION. All rights reserved.

7405-PB04-R

05/02/08

Broadcom®, the pulse logo, Connecting everything®, and the Connecting everything logo are among

the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries

and/or the EU. Any other trademarks or trade names mentioned are the property of their respective

owners.

BCM7405 Block Diagram

The BCM7405 is a high-performance, high definition (HD) satellite,

cable, and IP set-top box DVR System-on-Chip solution. It combines a

fast 1100-DMIPS MIPS32/MIPS16e™-class CPU, high-speed graphics

processing, including video scaling and motion adaptive deinterlacing, a

very flexible data transport processor, an MPEG-4/VC-1/MPEG-2/AVS-

compliant video decoder, a programmable audio decoder, six video

DACs, stereo high-fidelity audio DACs, dual Fast Ethernet ports, one

with integrated PHY, triple USB 2.0, a PCI 2.3/Expansion Bus, a high-

speed 400-Mhz DDR2 memory controller, and a peripheral control unit

that provides a variety of set-top box control functions. Integrated in 65-

nm technology, it offers one of the highest levels of single-chip system

performance available for STB applications.

The MPEG-2 DVB-compliant transport stream/PES parser and

demultiplexer is capable of simultaneously processing 256 PIDs via 128

PID channels in up to six independent external transport stream inputs

and two internal playback channels. All 128 PID channels can be used

by the record, audio, and video interface engine (RAVE), PCR

processing, message filter, and output via the high-speed transport or

remux module. The data transport module can be configured to support

eight record channels for PVR functionality and six A/V channels to

interface to audio and video decoders.

The transport provides 1DES/3DES/DVB/Multi2/AES descrambling

support. A memory-to-memory DMA security module may be

programmed for AES/1DES/3DES/CSS/CPRM/CPPM/DTCP copy

protection algorithms/standards. The BCM7405 features the Broadcom

Secure Processor (BSP), providing secure key generation, management,

and protection. The BSP also supports downloadable security

A new video decoder is featured in the BCM7405 that is capable of

simultaneous decode of an HD and SD stream with picture-in-picture

display. Other Mosaic or tiled stream combinations can also be supported

for an enhanced video-rich navigation user experience. DivX 3.11/4.11/

5.x and MPEG-4 Part 2 Simple profile and Advanced Simple profile at

Level 5 are additionally supported.

The BCM7405 has an advanced audio processor capable of decoding a

wide range of digital audio formats. This audio decoder also supports a

number of popular transcoding operations such as AAC to DTS 5.1 or

AC3+ to AC3.

The BCM7405’s video and graphics processing features significantly

improved scaling and blending performance, enabling real-time video-

like graphics effects to be implemented. Digital contour reduction

improves the video quality of low-bit-rate AVC/AVS video. An ITU-R-

656 output port is also provided with a teletext sideband.

The 1100-DMIPS MIPS32™ CPU has been designed to maximize

overall system performance and has significantly improved cache

performance over previous-generation devices. The CPU subsystem also

includes a Floating Point Unit.

Integrated peripherals include three UARTS, dual ISO7816 SmartCard

interfaces, counter/timers, GPIO ports, a LED/keypad controller, IR

receivers, an IR blaster, a UHF remote control receiver, an integrated soft

modem system side device, and serial controllers.

Dual

Composite

NTSC/PAL

VEC with 6

DACs

400-MHz

CMT MIPS32/16e

32KI & 64KD

MMU and FPU

8K RAC, 128K L2

PCM

Audio

Engine

&

DACs

Bus Bridge

DRAM Controller

RMX

x2

ISO7816 I/F

x2

ITU-R-656

Decoder

USB 2.0 x2

USB 1.1

I2S In

Secure Processor

O

T

P

R

O

M

Soft Modem,

Si305X,

Ethernet

10/100

BASE-T

Video

- Scalers

- Compositors

- Digital Noise

Reduction

- Delinterlacing

IR/UHF

RX

Triple

UARTs

DMA

USB

1.1

Advanced

2D Graphics

Display

Engine

Multiformat

Audio

Processor

High Definition

AVC/AVS/MPEG-2/

MPEG-4/VC-1

Video Decoder

IR In x2

UHF In

IR TX

IR Out

GPIO

GPIO

L

R

SPDIF

12S Out

HD/SD Video

SD Video

ITU-R-656/TTX

HDMI

RF Mod.

NTSC

Channel 3/4

Gateway

Services

ITU-R-656

PCI 2.3 & Flash

Dual Serial

ATA-2

64-bit

DDR2

BSC

BSC x4

UARTx3

Dual

USB

2.0

Dual

PVR

Engine

w/Trick

Modes

MPEG-2/DVB Transport

with Descrambling and

Conditional Access Support

SCARD

MCARD

Transport

Input x6