Ubiso - IP: DVBS2 - Full

Dual DVB-S/S2 IP (Demodulator and Decoder)

Description

The UBISO Dual DVB-S2 IP is a low-cost, highly integrated dual DVB-S2 IP targeted for use in DVB-S and/or DVB-S2 satellite set-top box ICs. The device can process two data paths in parallel, i.e. two independent DVB-S or DVB-S2 data paths. The device is well suited for gateway, PVR, push-VOD and EPG applications.

 

Product Brief

 

Its primary function is to take baseband analog I and Q signals containing the transponder of interest and then to digitize, demodulate, decode, and output the decoded MPEG transport stream data.

Block Diagram

DVBS2_Block_Diagram

Features

  • Two independent DVB-S2/DVB-S channels
  • DVB-S2 broadcast mode
  • DVB-S compliant
  • Digital Demodulator and Fordward-Error-Correction processing (FEC)
  • Modulation formats and code rates:
    • DVB-S2:
      • QPSK: 1/4 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
      • 8-PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10
    • DVB-S:
      • BPSK: 1/2, 2/3, ¾, 5/6, 7/8
      • QPSK: 1/2, 2/3, ¾, 5/6, 7/8
    • DSS:
      • QPSK: 1/2, 2/3, 6/7
  • Symbol rates:
    • DVB-S: 2....45 Msym/s
    • DVB-S2: 5...31Msym/s
  • Serial transport data output
  • Parallel data output for DVB-CI
  • 8-bit microcontroller for each channel which controls one data path
  • I2C interface (1 per channel) & R-Bus interface (1 per channel)
  • DiSEqC2.x compliant interface
  • Blindscan/autoscan hardware support
  • Integrated BER and SNR monitors
  • High compact and efficient FEC solution
  • Smart power down concept
  • Two AGC outputs
  • Special features for DirecTVTM compliance

Application

The following diagram shows the UBISO dual IP in a set-top box application. It converts baseband I and Q signal into bit streams for use by the back-end function of the set-top box. This includes digitizing, demodulation and decoding of high definition content for next generation television.

DVBS2_dual_application

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•Two independent DVB-S2/DVB-S/DSS data paths
•Modulation formats and code rates:
▫ DVB-S2:
–QPSK: ¼, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
–8-PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10
▫ DVB-S:
–BPSK:  ½, 2/3, ¾, 5/6, 7/8
–QPSK: ½, 2/3, ¾, 5/6, 7/8
▫ DSS: 
–QPSK: ½, 2/3, 6/7
•Symbol rates:
–DSS/DVB-S: 2….45 Msym/s
–DVB-S2: 5…31Msym/s
•2 serial /parallel port interfaces for transport streams / DVB-CI
•2 8-bit microcontrollers which each control one data path
•2 I2C interfaces (1 per channel) & 2 R-Bus interface (1 per channel)
•Two DiSEqC2.x compliant interfaces
•Blindscan/autoscan hardware support
•Two AGC outputs
•Smart power down concept: every channel can be individually powered down
•Special features for DirecTVTM compliance