Embedded video wall board with Hisilicon Hi3531
Overview
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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