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Original question:

AM62A7: Register on ISP side

TDA4VM: TDA4VM

Sushma Biradar
Prodigy 160 points
Part Number: TDA4VM


Tool/software:

Hi team ,
Is it possible to access ISP (VISS) registers  or where to find the register lists of all the parameters of blocks in VISS to understand the mapping ?


Best Regards,
Sushma Biradar   

  • 0
    TI__Guru 60290 points

    Hi Sushma,

    https://www.ti.com/lit/zip/spruil1

    TDA4 register manual is included in the TRM package.

  • 0 in reply to Gang Hua
    Prodigy 160 points

    Hi Gang,

    Thank you for the quick update ,
    Can you please guide me as where to find or understand ISP registers of a particular block mapping to the HW or how is it internally being accessed ?

    Regards,
    Sushma Biradar

  • 0 in reply to Sushma Biradar
    TI__Guru 60290 points

    Hi Sushma,

    Each register has its own physical address as you can see in the register manual and it can be accessed via CPU or DMA.

    Sushma Biradar said:
    ISP registers of a particular block mapping to the HW

    I am not sure what this means as I am not familiar with low level details.
    Could you please explain?

  • 0 in reply to Gang Hua
    Prodigy 160 points

    Hello Gang,

    We were trying to access ISP registers (ex: NSF4 block and its parameters) map them externally and update the values via TCP if possible ,
    so we need information of how internally in SDK the registers are being mapped to their respective parameters   

    Regards,
    Sushma Biradar

  • 0 in reply to Sushma Biradar
    TI__Guru 60290 points

    Hi Sushma,

    Sushma Biradar said:
    to access ISP registers (ex: NSF4 block and its parameters) map them externally and update the values via TCP

    All ISP register information is available in the TRM package as we discussed above.

    Typically, controlling ISP registers directly and externally is not possible.
    While some cameras are running and using ISP, they will update the ISP registers frame by frame.
    Any other external control of ISP registers would be overridden by the running cameras.

    The way we did similar control in tuning tool is indirect.
    i.e., external control is applied on a camera's tuning data.
    While the camera updates ISP registers before each new image frame, it will use the updated dataset.

  • 0 in reply to Sushma Biradar
    TI__Guru 60290 points
    Sushma Biradar said:
    we need information of how internally in SDK the registers are being mapped to their respective parameters

    This mapping depends on the s/w stack you use, but you probably don't use the TI SDK stack.

    In TI SDK, ISP parameters are separately defined and they are passed to tiovx VPAC kernels to be mapped to PDK driver format before calling PDK driver.