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DPP6401F I2C interface address?

Joachim Bargsten
Prodigy 40 points
Other Parts Discussed in Thread: TMP100

Hello together

I am trying to connect to a DPP6401F via the I2C Bus.

When I am connected to the bus, I get only the following adresses.

0x1A
0x50
0x51
0x52
0x53

Can someone, gibe me some information about the adresses?

In the description I have for the interface it stands that the addreses are 0x34 or 0x35.

I am using a microcontroller which is connected to the I2C bus of a P1-Demo Board from anhuaoe.com.


I hope someone can help me and give me some more information.

Kind regards

J.Bargsten

  • 0
    TI__Genius 13235 points
    Hi Joachim,

    Thanks for posting. To clarify, are you using a LightCrafter4500 evaluation module?

    In regards to what you are seeing on the I2C bus, could it be that you are reading back the addresses in decimal? Hex 0x34 and 0x35 equate to decimal 52 and 53.

    Thanks,
    Clinton
  • 0
    TI__Prodigy 750 points

    Hi Joachim,

    I think what you have listed is the base I2C address without the R/W bit added in as the LSB.

    So all of the address would be shifted up with W/R bit added.

    0x1A => 0x34/0x35 (Write/Read address)

    0x50 => 0x70/0x71

    etc.

    The listing of other I2C addressable parts on the Formatter card are:

    0x9c  Temp Sensor, TMP100 if on board.

    0xA8   Projector Settings EEPROM, 24C32

    There may be other I2C addresses if there is a Front end card connected wiht EDID, HDMI, ADC, or Analog FE parts on it.

    Best Regards,

    Roger Perry

  • 0 in reply to Roger Perry
    Prodigy 40 points
    Hello Roger

    That is correct.
    In the documentation for the interface stands it is an 8-bit interface.
    That was the reason for the misunderstading :-)

    Thank you very much

    J.Bargsten