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DVB-C/J83 modulator

Product code: CMS0021

The CMS0021 single-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.
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 CMS0021 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:

Block diagram

Block diagram (click to enlarge)
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Safari Plug-in

Safari plug-in (click to enlarge)
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Downloads

iconRelease note
iconTechnical data brief, 23rd July 2008 (411 kB)
iconIP Guide, 18th July 2008 (995 kB)
iconAltera megacore, v1.2.7 (10.51 MB)
iconSafari Plug-in, v1.12 (6.44 MB)
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Certification

Altera AMPP Approved
Altera Open Core Plus
Altera SOPC Builder Ready

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.
  • Single or multiple standards per core.
  • Multiple cores provide > 1 channel.

Applications

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

Implementation

Plug-ins / Extensions