Friday, November 23, 2012

LG - 42PG20R _ EDID / DDC DOWNLOAD PROCEDURE






EDID [The Extended Display Identification Data] / DDC [Display Data Channel] Download.

Caution:  

  • Use the proper signal cable for EDID Download
  • Never connect HDMI & D-SUB Cable at the same time.
  • Use the proper cables below for EDID Writing.


EQUIPMENT

  • Adjusting PC with S/W for writing EDID Data.(S/W: EDID TESTER Ver.2.5)
  • A Jig for EDID Download
  • Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub 15Pin cable, DVI to HDMI cable.

JIG AND CONNECTION STRUCTURE



Caution: Never connect HDMI & D-SUB Cable at the same time.

                                   EDID DATA & XGA EDID DATA (Analog : 128bytes)





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                                                            HDMI 1 : 256bytes




                                                           HDMI 2 : 256bytes




                                                            HDMI 3 : 256bytes



                                                             PRODUCT ID



PREPARATION FOR ADJUST

  • As above Fig. 3, Connect the Set, EDID Download Jig,,PC & Cable.
  • Turn on the PC & EDID Download Jig. And Execute the S/W : EDID TESTER Ver.2.5.
  • Set up the S/W option.  Repeat Number : 5.  Device Address : A0.  PageByte : 8.






Power on the Set.
  • Sequence of Adjustment.
  • DDC data of Analog-RGB
  • Init the data.


Load the EDID data.(Open File).


Set software as below


Push the “Write Data & Verify” button. And confirm “Yes.


If the writing is finished, you will see the “OK” message.



HDCP(High-Bandwidth Digital Contents Protection)

  • Connect D-sub Signal Cable to D-Sub Jack
  • Input HDCP key with HDCP-key- in-program
  • HDCP Key value is stored on Main M-STAR IC(LGE6891DD) which is 0x80~0x90 addresses of 0x00~0x01 page(EEPROM MAP PAGE0~PAGE1 / START :A080)
  • Play the Equipment(DVD Player) included HDCP Key and confirm whether picture is displayed or not of using DVD Player.
  • HDCP Key value is different among the sets
DDC ADJUSTMENT COMMAND SET