EM8476 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

EM8476

MPEG-4 Decoder for Set-top, DVD and Streaming Applications

Unspecified 

EM8470, EM8471, EM8475, EM8476

Local Bus Controller Interface

The Local Bus Controller (LBC) interface, supported on the

EM8475 and EM8476, is a versatile block, designed to inter-

face the DRAM controller and PCI interface to an external

device, such as a non-PCI MPEG encoder chip. The LBC is

designed to handle DMA transfers (FIFO read/write from the

DRAM) and single register read/write from the external

device to or from the PCI interface. The same DMA transfers

and register read/write operations can be done from the

external device to or from the DRAM controller within the

EM8475 and EM8476.

The LBC interface is compatible with the 16-bit multiplexed

address / data format (Intel format), 16-bit data and 8-bit

address format (generic format) and 16-bit compressed data

format. It also directly supports the Stream Machine SM2210

/ 2288 MPEG codecs.

PCI Host Interface

The PCI interface is the main conduit between the EM847x

and the host processor. It is designed for both master reads

and writes with programmable burst length and is PCI v2.1

compliant. The PCI interface supports 3.3V and 5V operation

and ACPI power management from the PCI v2.2 specifica-

tion.

VOD Client Software (ISMA, RTSP)

VOD client software for the x86 is available that supports

RTSP-based ISMA streaming.

IP Multicasting Client Software

IP multicasting client software for the x86 is available.

MPEG-4 Client System Software

Third party x86 client software is available that supports the

EM847x, including Envivio and iVAST. For the latest list,

please check with your local sales representative.

Memory Requirements

The EM847x requires a minimum of 4 MB (1Mb x 32) of 100

MHz SDRAM.

Additional Software Available

VOD Client Software (MPEG-2)

VOD client software for the x86 is available that supports

select MPEG-2 video servers, including:

• Cisco's IPTV family

• Concurrent's MediaHawk

• InfoValue’s MediaQuick

• Kasenna’s MediaBase

• nCUBE's NVS

• Streaming21's Media Server

• Thirdspace’s OVS (Oracle Video Server)

For the latest list, please check with your local sales repre-

sentative.

Sigma Designs, Inc.

355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740

-6-

www.sigmadesigns.com • sales@sigmadesigns.com

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