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DVRRDK question on scalar and others

Thomas Lo
Expert 1560 points

How many scalar link can be created? is it affected by whether DEI or mosaic is being used?
and how many channels can a scalar handled? 

I have another question about processor loading in http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/268746.aspx

and question on http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/267453.aspx about DMA, please help answering them too, Thanks.


One more question, in http://www.ti.com/product/tms320dm8168 the part Other On-Chip Memory 512KB is for what kind of usage? Can it be accessed?

  • 0
    TI__Guru 59700 points

    There are two scaler linkIds defined so you can have two scaler links having the same pathID.

    One scaler link can handle 16 channels.This is just in terms of being able to create the driver. Realtime performance depends on the channel resolution.

    There are several restrictions on which scaler path id can be used based on other resources used in the system (DEI/SwMs/Capture etc.) Refer

    hdvpss\hdvpss_01_00_01_37_patched\docs\ti816x\HDVPSS_SW_Concurrency.xls for coexistence matrix for different drivers.Scaler link supports SC5 and SC3 drivers.

    Thomas Lo said:
    One more question, in http://www.ti.com/product/tms320dm8168 the part Other On-Chip Memory 512KB is for what kind of usage? Can it be accessed?

    The 512KB OCMC is a fast internal memory .There are two OCMCs ,OCMC 0 and OCMC 1. OCMC cannot be accessed from GEM MDMA (c674x) and also OCMC is already completely used  in DVR RDK for placing critical code.

  • 0 in reply to Badri Narayanan
    Prodigy 10 points

     Badri,

    Is there any specific doc with details for scalar ?