STi7109:Low-cost HDTV set-top box decoder for H.264 and Microsoft WMA9

The STi7109 is a new generation, high-definition set-top box / DVD decoder chip, and provides very high performance for low-cost HD systems. STi7109 includes both Windows Media Video 9 and H.264 video decoders for new, low bit rate applications.

Based on the Omega2 (STBus) architecture, this system-on-chip is a full back-end processor for digital terrestrial, satellite, cable, DSL and IP client high-definition set-top boxes, compliant with ATSC, SMPTE VC-1, DVB, DIRECTV, DCII, OpenCable and ARIB BS4 specifications. It includes all processing for DVD applications.

The STi7109 demultiplexes, decrypts and decodes HD or 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 or DVD-R. Connection to a TV or display panel can be analog through the DACs, or digital through a copy protected DVI/HDMI. 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 STi7109 for reformatting and display.

The STi7109 includes a graphics rendering and display capability with a 2D graphics accelerator, three 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/DVD-R outputs.

The STi7109 includes a stream merger to allow seven different transport streams from different sources to be merged and processed concurrently. Applications include DVR timeshifted 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.

The STi7109 embeds a 266 MHz ST40-202 CPU for applications and device control. A dual DDR1 SDRAM memory interface is used for higher performance, to allow the video decoder the required memory bandwidth for VC-1/HD H.264 and sufficient bandwidth for the CPU and the rest of the system. A second memory bus is also provided for flash memory, storing resident software, and for connection of peripherals. This bus also has a high speed synchronous mode that can be used to exchange data between two STi7109 devices. This can be used to connect a second STi7109 as a co-decoder for a dual TV STB application.

A hard-disk drive (HDD) can be connected either to the serial ATA interface, or as an expansion drive through the USB 2.0 port.

For IP-TV applications, the integrated 100BT Ethernet controller and MII/RMII interface can be used for generic Ethernet delivery, as shown in Figure 4: Low-cost HD IP-TV set-top box with HDD on page 4.

The USB or Ethernet interfaces can also be used to connect to a DOCSIS 2.0 CM gateway for interactive cable applications.

The STi7109 is supported by STMicroelectronics’ STAPI software, and is compatible with the STx7100 and STi7710.

Key Features

  • The STi7109 is a single-chip, high-definition video decoder including: Microsoft® VC-1, WMA9 and H.264 supportLinux® , Windows® CE and OS21 compatible ST40 CPU core: 266 MHztransport filtering and descramblingvideo decoder: VC-1 (including WMA 9), H.264 (MPEG-4 part 10) and MPEG-2SVP compliantWindows® DRM supportgraphics engine and dual display: standard and high-definitionaudio decoder: including Windows Media® Audio 9 (WMA-9) and WMA-9 ProDVD data retrieval and decryption
  • The STi7109 also features the following embedded interfaces: USB 2.0 host controller/PHY interfaceDVI/HDMI™ outputdigital audio and video auxiliary inputslow-cost modem100BT ethernet controller with integrated MAC and MII/RMII interface for external PHYserial ATA (SATA)
Product Specifications
DescriptionVersionSize
DB0227: Low-cost HDTV set-top box decoder for H.264 and Microsoft WMA92.2208 KB
Flyers
DescriptionVersionSize
High definition, low bit-rate video decoders2.2591 KB
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STI7109TWDPBGA 680 35x35x2.6IndustrialEcopack1
STI7109B-IWDPBGA 680 35x35x2.6IndustrialEcopack1
STI7109DWDPBGA 680 35x35x2.6IndustrialEcopack1
STI7109FWDPBGA 680 35x35x2.6IndustrialEcopack1
STI7109CWDPBGA 680 35x35x2.6IndustrialEcopack1
STI7109ZWDPBGA 680 35x35x2.6IndustrialEcopack1
STI7109JWDTPBGA 680 35x35x2.6IndustrialEcopack1
STI7109BWDPBGA 680 35x35x2.6IndustrialEcopack1md_b7-wspc-pbga35x35-wspc-580+100_7109bht.pdf
md_b7-wspc-pbga35x35-wspc-580+100_7109bht.xml
STI7109YWDPBGA 680 35x35x2.6IndustrialEcopack1md_b7-wspc-pbga580+10035sq_7109yhtrevb.pdf
STI7109KWDPBGA 680 35x35x2.6IndustrialEcopack1
STI7109JWDPBGA 680 35x35x2.6IndustrialEcopack1
circuit_diagram_11660_thumbnail.png STI7109
Low-cost HDTV set-top box decoder for H.264 and Microsoft WMA9 STI7109
Low-cost HDTV set-top box decoder for H.264 and Microsoft WMA9 STI7109
md_b7-wspc-pbga35x35-wspc-580+100_7109bht.pdf STI7109
md_b7-wspc-pbga35x35-wspc-580+100_7109bht.xml STI7109
md_b7-wspc-pbga580+10035sq_7109yhtrevb.pdf STI7109