OV E R V I E W

®

Phone: 949-450-8700

Fax: 949-450-8710

E-mail: info@broadcom.com

Web: www.broadcom.com

BROADCOM CORPORATION

16215 Alton Parkway, P.O. Box 57013

Irvine, California 92619-7013

© 2005 by BROADCOM CORPORATION. All rights reserved.

7402-PB01-R

11/14/06

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.

BCM7402 Block Diagram

The BCM7402 is a high-definition satellite, cable, and IP set-top box non-

DVR solution offering integrated AVC (H.264/MPEG-4 Part 10), MPEG-2,

and VC-1 video decoding technology. It combines a data transport processor,

high-definition AVC/MPEG-2/VC-1 video decoder, advanced-audio decoder,

2D graphics processing, high-quality video scaling and motion adaptive

deinterlacing, six video DACs, stereo high-fidelity audio DACs, a MIPS32/

MIPS16e™ class CPU, and a peripheral control unit providing a variety of

set-top box control functions.

The M P EG-2 D VB - comp l i a nt t r ansport st ream / P ES parser an d

demultiplexer is capable of simultaneously processing 256 PIDs via 128 PID

channels in up to five 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 for output via the high-speed transport or remux module. The transport

provides 1DES/3DES/DVB/Multi2/AES descrambling support. A memory-

to-memory DMA security module may be programmed for supporting AES/

1DES/3DES/CSS/CPRM/CPPM/DTCP copy protection algorithms/

standards. The BCM7402 features the Broadcom secure processor providing

secure key generation, management, and protection.

An advanced video decoder is featured in the BCM7402, capable of

supporting high-definition AVC, VC-1, and MPEG-2 streams. AVC support

is for main- and high-profile to level 4.1 for 720p and 1080i high-definition

support or to level 3.1 for standard definition streams. AVC high profile was

added to the fidelity range extensions specifically to address the needs of

consumer broadcast applications. Tools include additional transform sizes

and spatial prediction modes and support for adaptive quantization matrix.

The video decoder also supports high-definition VC-1 (advanced-profile

level 3, main, and simple profiles) and MPEG-2, main profile at main and

high levels. The BCM7402 has an advanced audio processor capable of

decoding Dolby Digital, Dolby Digital Plus, AAC 5.1, AAC+ level 2, and

MPEG 1 layers 1, 2, and 3 with simultaneous pass-through support. 3D SRS

audio is also supported. Available audio outputs are I

of analog outputs.

High-quality video and graphics processing is integrated, featuring advanced

studio quality 2D graphics processing. Also included are motion-adaptive

deinterlacing with 3:2 pulldown, and letterbox detection. Digital noise reduction

minimizes mosquito noise and MPEG artifacts, including block noise.

The BCM7402 has a dual-stream analog video encoder with Macrovision

that supports the following output standards: NTSC-M, NTSC-J, PAL-

BDGHIN, PAL-M, and PAL-Nc. The following output formats are

supported: composite, S-Video, SCART, RGB, and YPrPb component. The

following output resolutions are supported: 480i, 480p, 576i, 576p, 720p, and

1080i. Six output video DACs are available to be shared among the output

functions. The BCM7402 also supports output over an HDMI interface and

a channel 3/4 RF modulator. An ITU-R-656 output port is also available with

teletext sideband.

The BCM7402 incorporates a complete MIPS32™-based microprocessor

subsystem, including caches with bridging to memory and a local bus.

Integrated peripherals include three UARTS, two ISO7816 smart card

interfaces, counter/timers, a GPIO, a LED/keypad controller, IR receivers, an

IR blaster, a UHF remote control receiver, an integrated soft modem system

side device, and BSC and SPI controllers. Advanced connectivity features

include two USB 2.0/1.1 ports, an additional independent USB 1.1 port, a

serial ATA port, and an Ethernet port with Mac with integrated PHY and

alternate media independent interface (MII).