DVB-C Modulator J.83 Annex A/C Core
 
    Description

The MVD DVB-C Modulator J.83 Annex A/C core is a drop-in module that includes the following functions :
  • Input data framer from Microprocessor, MPEG_ASI or MPEG_SPI source (MPEG_TS flow)
  • J83AC modulator (Energy dispersal, Reed Solomon encoder, QAM symbol mapper)
  • Programmable RRC filter for annex A and C
  • Flexible Digital Up Converter
  • Modulator for FI output
  • Output for simple DAC (14 bits) or complex DAC (2x16bits)
  • The MVD DVB-C Modulator J83 Annex A/C core can be customized for specific application.

In option, it can include :

  • ASI interface core
  • Direct 32 bit CPU interface for configuration parameters and MPEG_TS input flow

Complete application fits into 3S500E and/or 3S700A depending on selected options.

    
           
    Features
  • ITU-T J.83 Annex A/C, DVB-C (ETS 300 429) Compliant baseband transmitter for Cable ModemTermination Systems (CMTS)
  • Drop-in module for Spartan™-3/E/A, Virtex-4™ and Virtex-5™FPGAs
  • Supports programmable symbol rates
  • Single channel - Support for multiple channels
  • Single clock (up to 140 MHz+ for Spartan-3™,  180 MHz+ for Virtex-4™ and Virtex-5™)
  • Programmable 16, 32, 64, 128 and 256 QAM Symbol Mapping
  • Full synthetizable RTL VHDL design  (not delivered) for easy customization
  • Netlist version available for ISE 9.2 and later versions
  • MER > 43 dB
    
    Applications

The DVB-C Modulator J.83 Annex A/C Core may be used in applications related to cable transmission, typically at the cable head end.		    
           
           
                       
      For an IF output a low cost DAC can be used for an IF frequency ranging from 10 to almost 60 MHz. 

For an RF output there are two kinds of solutions :

  • Using an RF DAC (for example Analog Devices AD9789 (2 GHz DAC) or Maxim MAX5881 (4 GHz DAC).
    MVD cores can be adapted for working with any one of those RF DACs.
  • Using an analog Up Converter module (Microtune MT5100F). With this module the channel number can easily be changed without doing anythin in the FPGA.
    
      Documentation

    Contacts

 
Sales informations : info_cores@mvd-fpga.com
Technical support : support_cores@mvd-fpga.com