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Cable
 
- DVB-C J83 demodulator
- DVB-C J83 modulator
- Multi-channel DVB-C J83 modulator
- J83 A,B,C and DVB-C FEC
- Multi-channel DVB-CJ83 FEC encoder
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IP Core Á¦Ç° > Cable > Multi-channel DVB-C J83 modulator
 

Multi-channel DVB-C/J83 modulator

Product code: CMS0024

The CMS0024 multi-channel DVB-C/J83 modulator is fully compliant with the European, US and Japanese downlink cable Standards DVB-C EN 300 429 and ITU J83 Annexes A/B/C (including DOCSIS 1.1/2.0). The core provides all the necessary functions between transport stream input and a modulated QAM output.
The core can be configured to support from one to four FDM channels with additional (independent) channels accommodated by the instantiation of multiple single or multi-channel cores per FPGA.
Multi-channel J.83B designs can operate either from internal memory (short interleaving modes) or from shared external memory (long interleaving modes) by means of a versatile access controller.
Typical applications of the CMS0024 include head-end video and broadband data transmissions systems (CMTS), cable modem test equipment and point-to-point (PTP) or point-to-multipoint microwave radio links.
A range of synthesis options allows the core to be tailored for any particular application.
Also see:


DVB-C/J83 modulator
DVB-C/J83 demodulator
Universal QAM/PSK modulator


Block diagram


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Safari Plug-in



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Downloads

Release note
Technical data brief, 23rd July 2008 (441 kB)
IP Guide, 18th July 2008 (995 kB)
Altera megacore, v1.2.8 (10.52 MB)
Safari Plug-in, v1.16 (6.43 MB)

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Certification



Standards compliance

  • DVB-C EN 300 429
  • ITU J83 Annexes A/B/C
  • DOCSIS 1.1/2.0

  • Features

  • Modulation accuracy > 45dB (MER).
  • Variable symbol rate interpolation.
  • Software selectable channel filter.
  • On-chip or off-chip interleaver memory.
  • 1 to 4 channels per core.
  • Single or multiple standards per core.
  • Multiple cores provide > 4 channels.

  • Applications

  • Head-end digital video and broadband data (CMTS) transmission systems.
  • Next generation, bandwidth-on-demand CMTS systems employing channel- bonding.

  • Implementation

  • Optimised for Altera.
  • Evaluation boards available.

  • Plug-ins / Extensions

  • ASI/SPI interface with TS PCR rate adaptation.
  •