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[FAQ] DS90UB947-Q1: MAPSEL setting for UB947

Harry Shin1
Expert 6290 points
Part Number: DS90UB947-Q1

Hi team,

My customer want to confirm with team if MAPSEL=0 is for JEIDA mapping format.

because they could get attached test result when they follow datasheet information.

OLDI mapping test result of 947.pptx

so their conclusion is MAPSEL=0 is for JEIDA not for VESA so that datasheet information has typo.

could you pls help answer this??

Thanks 

  • 0
    TI__Guru** 103215 points

    Hello Harry,

    The mapping is as follows:

     

    24 Bit Mode

    18 Bit Mode

    MAPSEL = H

    OLDI/SPWG/VESA

    4 Lane 18 Bit Mode

    MAPSEL = L

    JEIDA

    Standard 18 bit

    Yes, this is a common question that leads to confusion, especially since there is conflict between vendors about these industry standard terms as well. Some vendors use JEIDA/VESA interchangeably.  

    Best Regards,

    Casey 

  • 0 in reply to Casey McCrea
    TI__Expert 6290 points

    Thanks for clear information.