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IWR6843ISK: Why does this board consist of 8 layers?

Hideaki Shiranaga
Prodigy 200 points
Part Number: IWR6843ISK

IWR6843ISK evaluation board consists of 8 layers.

On the other hand IWR1642ISK and IWR1843ISK use 6 layers.

Please let me know if you know why 8 layers are needed for IWR6843ISK and how the 2 layers are utilized.

  • 0
    TI__Mastermind 25835 points

    Hello Hideaki Shiranaga-san,

       Your observation is right,

    In the latest EVM we have added additional circuits (CAN, USB to UART, USB based powering) and 60 pin connector for the direct DCA1000 connector which has LVDS routing needed additional space to accommodate these additional circuits, we needed additional two more layer. 

    Below is the Layers and it's routing topology: 

    L1 :  Top layer and Antenna routing

    L2:  Ground reference to top layer

    L3: Routing Layer1

    L4: Routing Layer2 

    L5 Routing Layer3 (& Power routing)

    L6 Routing Layer4 (Power routing, LVDS routing)

    L7: Ground reference for bottom layer

    L8 Bottom Layer 

    Hence two more layers added in the new IWR6843ISK.

    Thanks and regards,

    CHETHAN KUMAR Y.B.

  • 0 in reply to CHETHAN KUMAR Y.B.
    Prodigy 200 points

    Thank you for your kind support..

    I understand the details of layers.

    This is very useful for our development.

  • 0 in reply to Hideaki Shiranaga
    TI__Mastermind 25835 points

    Hideaki Shiranaga-san,

       Thank you for your confirmation. 

    Thanks and best regards,

    CHETHAN KUMAR Y.B.