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STI7109AWD-STI7109B-IWD-STI7109BWD-STI7109DWD-STI7109KWD-STI7109NWD-STI7109OWC-STI7109WECP-STI7109YWC-STI7109ZWC
Low-cost HDTV set-top box decoder for H.264 and Microsoft WMA9
Data BriefDecember 2006 Rev 2 1/9
STi7109Low-cost HDTV set-top box decoder for H.264 and Microsoft WMA9
Features The STi7109 is a single-chip, high-definition
video decoder including:
–Microsoft® VC-1, WMA9 and H.264
support
–Linux® , Windows® CE and OS21
compatible ST40 CPU core: 266 MHz transport filtering and descrambling video decoder: VC-1 (including WMA 9),
H.264 (MPEG-4 part 10) and MPEG-2 SVP compliant Windows® DRM support graphics engine and dual display: standard
and high-definition audio decoder: including Windows Media®
Audio 9 (WMA-9) and WMA-9 Pro DVD data retrieval and decryption The STi7109 also features the following
embedded interfaces: USB 2.0 host controller/PHY interface DVI/HDMI™ output digital audio and video auxiliary inputs low-cost modem 100BT ethernet controller with integrated
MAC and MII/RMII interface for external
PHY serial ATA (SATA)
Description STi71092/9
1 DescriptionThe 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 A TSC, 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 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.
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 Figure4: Low-cost HD IP-TV set-top box
with HDD on page4.
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.
STi7109 Description 3/9
Figure 1. Low-cost satellite HD set-top box
Figure 2. Low-cost cable HD set-top box with return channel
Description STi71094/9
Figure 3. Low-cost dual satellite and terrestrial HD set-top box with HDD and DVD
Figure 4. Low-cost HD IP-TV set-top box with HDD
STi7109 Description 5/9
1.1 Detailed features list
1.1.1 Processor subsystem ST40 32-bit superscaler RISC CPU 266 MHz, 2-way set associative 16-Kbyte ICache, 32-Kbyte DCache, MMU 5-stage pipeline, delayed branch support floating point unit, matrix operation support debug port, interrupt controller
1.1.2 Transport subsystem TS merger/router 2 serial/parallel inputs 1 bidirectional interface merging of 3 external transport streams transport streams from memory support NRSS-A module interface TS routing for DVB-CI and CableCARD™ modules Programmable transport interfaces (PTIs) two programmable transport interfaces two transport stream demultiplexers: DVB, DIRECTV®, ATSC, ARIB, OpenCable,
DCII integrated DES, AES, DVB and Multi2 descramblers NDS random access scrambled stream protocol (RASP) compliant NDS ICAM CA support for VGS, Passage and DVS042 residue handling
1.1.3 Video/graphics subsystem Microsoft VC-1 MP@HL (WMV 9) and AP@L3/H.264(MPEG-4 part 10) main and high
profile level 4.1/MPEG-2 MP@HL video decoder advanced error concealment and trick mode support dual MPEG-2 MP@HL decode SD (standard package) or HD/SD (extended package) digital video input Displays one HD display multi format capable (1080I, 720P , 480P/576P , 480I/576I)
- analog HD output RGB or YPbPr
- HDMI encoded output one standard-definition display
- analog SD output: YPbPr or YC and CVBS Gamma 2D/3D graphics processor triple source 2D gamma blitter engine alpha blending and logical operations color space and format conversion
Description STi71096/9 fast color fill arbitrary resizing with high quality filters acceleration of direct drawing by CPU Gamma compositor and video processor 7-channel mixer for high definition output independent 2-channel mixer for SD output 3 graphic display planes high-quality video scaler motion and detail adaptive deinterlacer linear resizing and format conversions horizontal and vertical filtering Copy protection HDMI/HDCP copy protection hardware SVP compliant Macrovision® copy protection for 480I, 480P, 576I, 576P outputs
–DTCP-IP AWG-based DCS analog copy protection
1.1.4 Audio subsystem Digital audio decoder support for all the most popular audio standards including WMA-9, WMA-9 Pro,
MPEG-1 layer I/II, MPEG-2 layer II, MPEG-2 AAC, MPEG-4 AAC LC 2-
channel/5.1 channel MPEG-4 AAC+SBR 2-channel/5.1 channel, Dolby® Digital
EX, Pro Logic® II, MLP™ and DTS® PCM mixing with internal or external source and sample rate conversion 6- to 2-channel downmixing PCM audio input independent multichannel PCM output, S/PDIF output and analog output Stereo 24-bit audio DAC for analog output IEC958/IEC1937 digital audio output
interface (S/PDIF) CSS/CPxM copy protection hardware
