(ACTIVE) 1080p Dual FPD-Link III Serializer


Functional Diagram


The DS90UB949-Q1 is a HDMI to FPD-Link III bridge device which, in conjunction with the FPD-Link III DS90UB940-Q1/DS90UB948-Q1 deserializers, provides 1-lane or 2-lane high-speed serial streams over cost-effective 50Ω single-ended coaxial or 100Ω differential shielded twisted-pair (STP) cables. It serializes a HDMI v1.4b input supporting video resolutions up to WUXGA and 1080p60 with 24-bit color depth.

The FPD-Link III interface supports video and audio data transmission and full duplex control, including I2C and SPI communication, over the same differential link. Consolidation of video data and control over two differential pairs reduces the interconnect size and weight and simplifies system design. EMI is minimized by the use of low voltage differential signaling, data scrambling, and randomization. In backward compatible mode, the device supports up to WXGA and 720p resolutions with 24-bit color depth over a single differential link.

The DS90UB949-Q1 supports multi-channel audio received through HDMI or an external I2S interface. The device also supports an optional auxiliary audio interface.


  • Supports TMDS Clock up to 170 MHz for WUXGA
    (1920x1200) and 1080p60 Resolutions with 24-Bit
    Color Depth
  • Single and Dual FPD-Link III Outputs
  • High-Definition Multimedia (HDMI) v1.4b Inputs
  • HDMI-Mode DisplayPort (DP++) Inputs
  • HDMI Audio Extraction for up to 8 Channels
  • High Speed Back Channel Supporting GPIO up
    to 2 Mbps
  • Supports up to 15 Meters of Cable with Automatic
    Temperature and Aging Compensation
  • Tracks Spread Spectrum Input Clock to Reduce
  • I2C (Master/Slave) with 1Mbps Fast-Mode Plus
  • SPI Control Interface up to 3.3 Mbps
  • Backward Compatible to DS90UB926Q-Q1 and
    DS90UB928Q-Q1 FPD-Link III Deserializers
  • Automotive Grade Product: AEC-Q100 Grade
    2 Qualified


Function Serializer    
Color depth (bpp) 24    
Pixel clock min (MHz) 25    
Pixel clock (Max) (MHz) 170    
Input compatibility HDMI    
Output compatibility FPD-Link III LVDS    
Features I2C Config^I2S Audio    
Signal Conditioning DC Balance    
EMI reduction SSC Compatible    
Diagnostics BIST    
Total Throughput (Mbps) 4080    
Rating Automotive    
Operating temperature range (C) -40 to 105    
Package Group VQFN|64    
Package size: mm2:W x L (PKG) 64VQFN: 81 mm2: 9 x 9 (VQFN|64)    

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