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TDA4vM MIPI CSI2-Tx

H-J
Intellectual 300 points
Other Parts Discussed in Thread: TDA4VM

Hello,

I saw the introduction to CSI Tx in the Technical Reference Manual(TDA4vM), but the interface was not found in the PinMux tool(J721E_alpha7 version).

Can CSI Tx of TDA4 be used?

Thanks!

  • 0
    TI__Genius 13770 points

    Hello,

    Yes, it can be use and it's there. It's just not under CSI but rather DSI. Here is the note from TRM

    TRM said:

    The CSI_TX_IF has no dedicated pins. At the device level, the CSI_TX_IF video output goes through the
    shared(with DSS_DSI0) DPHY_TX. See chapter ,Shared D-PHY Transmitter (DPHY_TX).

    So basically in the PMT you have to configure the DSI pins. Then I believe from the CTRL_MMR you can set that PHY_TX(DSI pins) to be fed by CSI_TX. Here is some more from TRM:

    TRM said:

    Table 12-15828 describes the DPHY_TX0 signals when module is transmitting data from the DSI0
    module, and Table 12-15829 describes the DPHY_TX0 signals when transmitting data from the
    CSI_TX_IF0 module.


    The CTRLMMR_DPHY_TX0_CTRL[1-0] LANE_FUNC_SEL register field in the device Control Module
    defines which module is connected to the DPHY_TX0.

    Hope it now makes sense, 

    thanks,

    Alex

  • 0 in reply to Alex Bashkov
    Intellectual 300 points

    I see. Thanks for your reply.
    There is a littel suggestion in PinMux add CSI2_Tx configuration Tools (Assigning these signal to DSI Pin), avoid to cause confusion.