DS90UR241/124 Deserializer and Serializer



5-43MHz DC-balanced 24-bit FPD-Link II chipset from National Semiconductor

National Semiconductor DS90UR241/124 Deserializer and Serializer National Semiconductor's DS90UR241/124 chipset translates a 24-bit parallel bus into a fully transparent data/control FPD-Link II LVDS serial stream with embedded clock information. This chipset is ideally suited for driving graphical data to displays requiring 18-bit color depth - RGB666 + HS, VS, DE + 3 additional general purpose data channels. This single serial stream simplifies transferring a 24-bit bus over PCB traces and cable by eliminating the skew problems between parallel data and clock paths. It saves system cost by narrowing data paths that, in turn, reduce PCB layers, cable width, and connector size and pins. The DS90UR241/124 incorporates FPD-Link II LVDS signaling on the high-speed I/O. FPD-Link II LVDS provides a low power and low noise environment for reliably transferring data over a serial transmission path. By optimizing the serializer output edge rate for the operating frequency range, EMI is further reduced. In addition, the device features pre-emphasis to boost signals over longer distances using lossy cables. Internal DC balanced encoding/decoding is used to support AC-coupled interconnects. Using National Semiconductor’s proprietary random lock, the serializer’s parallel data are randomized to the deserializer without the need of REFCLK.

        Features
  • Supports displays with 18-bit color depth
  • 5MHz to 43MHz pixel clock
  • Automotive grade product AEC-Q100 grade 2 qualified
  • 24:1 interface compression
  • Embedded clock with DC balancing supports AC-coupled data transmission
  • Capable to drive up to 10m shielded twisted-pair cable
  • No reference clock required (deserializer)
  • Meets ISO 10605 ESD - greater than 8kV HBM ESD structure
  • Hot plug support
  • EMI reduction - serializer accepts spread spectrum input; data randomization and shuffling on serial link; deserializer provides adjustable PTO (progressive turn-on) LVCMOS outputs
  • @Speed BIST (built-in self test) to validate LVDS transmission path
  • Individual power-down controls for both transmitter and receiver
  • Power supply range: 3.3V ±10%
  • 48-pin TQFP package for transmitter and 64-pin TQFP package for receiver
  • Temperature range: -40°C to +105°C
  • Backward compatible mode with DS90C241/DS90C124
        Applications
  • Automotive central information displays
  • Automotive instrument cluster displays
  • Automotive heads-up displays
  • Remote camera-based driver assistance systems

National Semiconductor
Part Number
Digi-Key Part Number Number of Inputs Number of Outputs  
DS90UR124IVS/NOPB DS90UR124IVS-ND 24 1 DS90UR124 Datasheet
DS90UR124QVS/NOPB DS90UR124QVS-ND 24 1
DS90UR241IVS/NOPB DS90UR241IVS-ND 1 24 DS90UR241 Datasheet
DS90UR241QVS/NOPB DS90UR241QVS-ND 1 24