VX8550 pages

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VIA

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VX855

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Unified Digital Media IGP

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The VIA VX855 is a low-power, highly integrated all-in-one system processor chip in a small 27 mm x 27 mm

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package that addresses key reguirements of small form factor, high performance, power sensitive embedded

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applications. The VIA VX855 is VIA's first integrated single chip that introduces the advantages of next-

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generation high definition H.264 and VC-1 video compression algorithms while maintaining a maximum power

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of only 2.3 watts, delivering the best performance in a small package.

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TheVIAVX855 integrates a high performance DDR2 memory controller (up to 800 MHz), a 400/800 MHz FSB

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CPU interface, and extensive I/O capabilities (such as EIDE, USB 2.0, SDIO, UART, SPI, LPC and SMBus) in a single

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chip. It supports the VIAChrome9™ HCM DX9 3D engine, High Definition audio controller, and plenty of display

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interfaces in its LVDS transmitter, CMOS LCD interface and CRT interface for more flexible multimedia playback

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options. It also supports dual independent displays on the same platform.

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VIA VX855 provides an advanced 3D graphics experience, which is powered by its high freguency GFX graphic

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engine and unified video decode acceleration. The high performance image processing features includes

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support for full hardware acceleration of leading video standards including H.264, MPEG-2, VC1, and WMV9 —

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greatly relieving the burden and reducing the power consumption of the CPU at the same time. The VX855

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also supports up to three audio streams (up to eight channels each) with 32-bit sample depth and sample rates

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up to 192 kHz.

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The VX855 has a thermal design power (TDP) of 2.3 watts and is validated with Nano™, C7® and Eden™

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processors. Together with Nano™ processor, the whole platform has a combined TDP of 15.3 watts, delivering

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incredibly high performance for demanding multimedia entertainment and making it ideal for many

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embedded market segments such as digital signage, in-vehicle entertainment, infotainment machines,

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interactive clients (POS, kiosks), gaming, and industrial control.

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Key Features

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Host Interface

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■ VIA Nano™/C7®/Eden™ processor (up to 800 MHz

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FSB)

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Memory Controller

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■ Supports up to two 64-bit DDR2 800 DIMMs (4

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GB max)

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High Definition Audio Interface

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■ Up to 32-bit sample depth at 192 kHz sampling

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rate

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■ Supports three codecs and eight streams

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■ Supports High Definition modem

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Integrated 2D / 3D / Video Processor

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■ VIA Chrome9™ HCM DX9 3D engine

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■ 128-bit 2D engine with hardware rotation

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capability

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■ High Definition video processor with VMR

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capability

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■ Upto512 MB frame buffer

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Unified Video Decoding Processor

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■ MPEG-2, H.264 decoder

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■ VC1 video decoding acceleration

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Video Capture Port

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■ Supports CCIR656/CCIR601 input

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■ Supports parallel and serial transport stream

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input

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Display Interface

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■ Three 10-bit 350 MHz RAMDACs

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■ Single-channel LVDS

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■ 18-bit TTL

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■ Supports DuoView+™

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Storage Interface

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■ Supports UDMA IDE

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■ Supports SD/MS/MMC/XD

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Peripheral Expansion Bus

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■ Supports six USB 2.0 ports

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■ One USB client 2.0 device port

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■ Supports LPC bus

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■ Supports SDIO, SPI and UART

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Power Management

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■ ACPI 3.0 and PCI Bus Power Management 1.1

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compliant

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■ Snapshot extensive system power management

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Package

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■ Flip-Chip Ball Grid Array (FCBGA)

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■ Size: 27 mm x 27 mm

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TDP Power

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■ TDP max: 2.3 W

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JifiBk embedded

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