Embedded video wall board with Hisilicon Hi3531


Embedded board for LCD panel - one video wall segment. Board development for decoding video streams over Ethernet and output image to display module or an external display via VGA/HDMI interfaces. Video streams processing and control, implemented by processor HiSilicon Hi3531. It’s also possible used like a network video recorder (NVR) for recording video streams to hard drive.

  • Application area Enterteyment, Surveillance
  • Used languages C/C++
  • Used technologies Linux kernel, Hi3531 SDK, SOAP
  • Used CAD/ISE Altium Designer, AutoCAD, SlickEdit
  • Technical description of the project
  • Data/Specification sheets
  • Custom design rules and requests
  • Block diagram
  • Schematic
  • PCB Layout
  • Bill of materials
  • Assembly drawings
  • Drill/Pick and place
  • Test plan

What we did

  • Creating concepts
  • Electrical schematics design
  • PCB layout beneath customer housing
  • Preparing technical documentation for PCBs production and assembly
  • Launch and testing of prototypes
  • U-Boot and Linux modification out BSP (Board Support Package) for new hardware environment
  • Overall segmentation protocol was developed for each channel of videowall without a central server

Features of design

  • Hisilicon Hi3531 DualCore A9 SoC 930MHz 817-pin BGA
  • TFP401 + DS90C387A HDMI to LVDS bridge
  • 2 x SATA2.6
  • 4 x USB2.0
  • DDR3-667, NAND, NOR memory
  • 1Gbit PHY, 100Mbit PHY, PoE+
  • TLV320AIC3104 Audio Codec
  • 6 Layers PCB
  • PCB impedance control
  • Picture segmentation: 1x, 1/4x, 1/8x, 4x, 8x

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