Cable Modulator J.83 Annex B Core
 
    Description

The MVD Cable modulator J83B 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)
  • J83B modulator (Energy dispersal, Reed Solomon encoder, QAM symbol mapper)
  • Programmable RRC filter
  • Flexible Digital Up Converter
  • Modulator for FI output
  • Output for simple DAC (14 bits) or complex DAC (2x16bits)

The MVD Cable modulator J83B 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
  • Controller for internal BRAM

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

    
           
    Features
  • ITU-T J.83 Annex B, Compliant baseband transmitter for Cable Modem Termination Systems (CMTS)
  • Drop-in module for Virtex-5™, Virtex-4™ and Spartan™-3/E/A FPGAs
  • Supports all interleaved modes
  • Supports 5.056941 & 5.360537 symbol rates
  • PCR restamping
  • Single channel - support for multi channel
  • Single clock (up to 140 MHz+ for Spartan-3™, 180 MHz+ for Virtex-4™ and Virtex-5™)
  • Programmable 64 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 > 43dB
  • Controller for ZBT memory (controller for internal BRAM in option)
    
    Applications

May be used in applications related to cable transmission, typically at the cable head end..		    
           
           
           
      Documentation

    Contacts

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