Description

STi5200

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Description

The STi5200 is a new generation, standard-definition set-top box decoder chip, which

provides very high performance for low-cost systems. With enhanced performance over the

STi7710, it includes an H.264/AVC decoder for new low-bitrate applications, and dual-

decode MPEG-2 capability.

Based on the Omega2 (STBus) architecture, this system on chip is a full back-end

processing solution for digital terrestrial, satellite and cable standard-definition set-top boxes

compliant with ATSC, DVB, DIRECTV, DCII, OpenCable and ARIB BS4 specifications.

The STi5200 demultiplexes, decrypts and decodes SD video streams with associated

multichannel audio. Video is output to two independently formatted displays: a full resolution

display intended for a TV monitor, and a downsampled display intended for a VCR.

Connection to a TV or display panel is through an analog component interface. Composite

outputs are provided for connection to the VCR with Macrovision protection. Audio is output

with optional PCM mixing to an S/PDIF interface, PCM interface or through integrated stereo

audio DACs.

Digitized analog programs can also be input to the STi5200 for reformatting and display.

The STi5200 can render and display graphics, and has a 2D graphics accelerator, two

graphics planes and a cursor plane. A dual display compositor provides mixing of graphics

and video with independent composition for each of the TV and VCR outputs.

The STi5200 includes a stream merger to allow five different transport streams from

different sources to be merged and processed concurrently. Applications include DVR time

shifted viewing of a terrestrial program while acquiring an EPG/data stream from a satellite

or cable front end.

The flexible descrambling engine is compatible with required standards including DVB, DES,

AES and Multi2.