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STB / DVR / Streaming Media

Block Diagram (SBD) for a STB / DVR / Streaming Media audio/video system that supports cable, satellite, terrestrial, or IP broadcasting, as well as a hybrid capability.

Block Diagram

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Design Considerations

Set Top Boxes (STB) | Audio Video Streaming Media

Design Considerations

TI offers comprehensive solutions for Digital Set Top Box (STB). The TI system block diagram for STB/Streaming Media provides solutions for cable, satellite and IPTV (Internet Protocol television) Set Top Boxes. This TI system block diagram can also be used for determining solutions for standalone Streaming Media products.

Core subsystem includes:

  • Video Interfaces - The video interfaces (output) include HDMI and Component and/or Composite video. These outputs often require high-performance video filters/amplifiers to enhance the video output from the SoC (System on Chip). Additionally these outputs often require ESD protection. Newer STB platforms provide HD (High Definition) as well as full HD at 1080p resolution and 3D.
  • Audio Interfaces – The audio output from the SoC (System on Chip) is made available via the stereo output jack and headphones. With such features as high SNR (Signal-to-Noise Ratio) and analog low-pass filtering, a high-quality audio output is required as well as an audio line driver. Additionally there may be an audio SPDIF (Sony/Philips Digital Interconnect Format) input/output interface requiring a digital audio transceiver.
  • USB input – A USB input to the STB requires current-limit and ESD protection
  • Ethernet input – One or more Ethernet inputs may be present for providing media content over the Ethernet.
  • HDD (Hard Disk Drive) Interface – for personal video recording or media storage STBs and Streaming Media devices have internal HDD, and often an interface for external HDD via SATA.
  • User Interface - Allows the user to control video/audio I/O sources and communication with the system network. The user interface also includes connectivity to the remote control via an IrDA or low-power wireless device residing on the unit itself as well as on the remote control unit. Most STBs now utilize an RF remote control using RF4CE.
  • Wireless Connectivity - Allows streaming audio and video transmit and receive through 802.11 interface.
  • MCU - The MSP430 microcontroller can be used for managing the interface with the remote control and other user interface peripherals.
  • Power Conversion - Including the AC-to-DC conversion to create the main power for the unit itself, the functional blocks in the STB require powering. The power architecture for the STB will vary by platform depending upon the core SoC (System on Chip), memory, analog front-end, analog signal chain components and interfaces used in the specific platform.  High efficiency single and multi-output switching regulators and low current LDOs are required. MOSFET load switches can be used for sequencing of the power rails. TI offers all the necessary power solutions to meet stringent energy conservation mandates.

Application Notes (10)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 01 Aug 2011 1258
HTM 8 KB 14 Jul 2010 3012
HTM 8 KB 05 May 2008 1699
HTM 9 KB 08 Apr 2008 278
HTM 8 KB 09 Nov 2007 514
HTM 8 KB 22 Jun 2007 566
PDF 108 KB 04 Jan 2007 839
HTM 9 KB 28 Sep 2006 480
HTM 9 KB 03 May 2004 513
HTM 9 KB 03 May 2004 620
    

Reference Designs

Description Part # Company
Buck for Set Top Box (6V @ 1A) PMP2092 Texas Instruments
Buck-boost (-20V @ 0.1A) for Set-Top-Box PMP2237 Texas Instruments
CC2530-CC2591EM Reference Design CC2530-CC2591EM-RD Texas Instruments
Sync Buck 1V@8A and 1.2V@8A PMP2994 Texas Instruments
Sync Buck for Set Top Box (3.3V @ 1.3A, 1.8V @ 1A, 5V @ 0.7A, 2.5V @ 0.3A) PMP2281 Texas Instruments
TPS54620 Reference Design for Fast Transient Response PMP4854-1 Texas Instruments
TPS54620 Reference Design Optimized for Small Size PMP4854-2 Texas Instruments

Selection and Solution Guides

Selection Guides (1)

Title Abstract Type Size (KB) Date Views
PDF 577 KB 18 Apr 2012 2166

Tools and Software

Name Part # Company Software/Tool Type
Code Composer Studio (CCStudio) Integrated Development Environment (IDE) v5 CCSTUDIO Texas Instruments SW Development Tools, IDEs, Compilers

Product Bulletin & White Papers

Product Bulletin (1)

Title Abstract Type Size (MB) Date Views
PDF 948 KB 13 Feb 2007 974

White Papers (17)

Title Abstract Type Size (MB) Date Views
PDF 94 KB 16 Jun 2011 732
PDF 5.27 MB 20 Jun 2010 993
PDF 150 KB 28 Aug 2009 1299
PDF 72 KB 18 Aug 2008 7
PDF 58 KB 01 Feb 2008 774
PDF 263 KB 10 Oct 2007 1565
PDF 94 KB 10 Oct 2007 775
PDF 124 KB 28 Mar 2007 759
PDF 470 KB 20 Mar 2007 19
PDF 648 KB 12 Feb 2007 736
PDF 114 KB 13 Nov 2006 571
PDF 273 KB 27 Apr 2006 1
PDF 73 KB 13 Feb 2006 1
PDF 70 KB 06 Dec 2005 21
PDF 134 KB 26 Sep 2005 621
PDF 56 KB 08 Sep 2005 834
PDF 55 KB 08 Sep 2005 948

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