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CDCM6208V2G: cdcm6208v2rgzt

ashwad yadav
Prodigy 140 points
Part Number: CDCM6208V2G
Other Parts Discussed in Thread: CDCM6208

HELLO,

presently i'm using IC(cdcm6208).so i'm facing problem  based upon I2C PROTOCOL and even configured according  to ti data sheet but still i'm not getting clock cycles in output.

these are details what I configured

to activate I2C

mode0 is given to  3.3v

mode1 to ground

and two clocks are present

1.primary and secondary clocks.

in primary there are two

i.+(positive) given to 10mhz

ii.-(negative) is in floating

2.secondary

two signs are in floating

 still i have to do anything or not

can any one help me.

  • 0
    TI__Expert 5370 points
    Dear Yadav,

    The mode selected in indeed IIC:
    SI_MODE[1:0]=01: I2C mode

    You will need to provide a clock to either primary or secondary. You will also need to configure your device using the serial IIC interface.

    Have you programmed your device with the IIC interface?

    Regards, Simon.
  • 0 in reply to Simon Damphousse
    Prodigy 140 points

    THESE ARE THE CONFIGURATIONS WE HAVE DONE:

    slave address =0x54 and write bit=0.

    STEP1:

    1.To enable I2C we are configuring MODE0=3.3V AND MODE1=GND

    2.To enable primary clock and secondary clock we have given 3.3v.

    3.For  primary clock positive pin we have given 10Mhz clock and negative pin not connected .

    4.For secondary clock  positive and negative pin are not connected.

    5.Reset and PDN pin given to 3.3v .

    6. sync pin is showing 3.3v
     

    7. When we are applying the data by using 3rd register in that 6th BIT we are making LOW.
    and after that writing  into all registers  6th BIT pin is made HIGH.


    STEP2:

    1.To enable I2C we are configuring MODE0=3.3V AND MODE1=GND

    2.To enable primary clock and secondary clock we have given 3.3v.

    3.For  primary clock positive pin  and negative pin we have given 10Mhz clock  .

    4..For secondary clock positive and negative pin connected to ground.

    5.Reset and PDN pin given to 3.3v .

    6. sync pin is showing 3.3v
     

    7. When we are applying the data by using 3rd register in that 6th BIT we are making LOW.

    and after that writing  into all registers  6th BIT pin is made HIGH.

  • 0 in reply to ashwad yadav
    TI__Expert 5325 points
    Hello Yadav,
    can you please clarify about the schematic implementation of the device?
    1) which levels are applied to the control pins?
    2) which loop filter is populated?
    3) How are the outputs terminated?
    By default this is coming up with the config mentioned in table 4 on p. 31 of the data sheet (I2C Default in 2nd row).
    Which configuration do you write to the device?
    Which output do you observe?
    Can you observe the STATUS1 pin?

    For basic testing I recommend to observe the reference signal on the bypass path on e.g. Y4 using OUTMUX_CH4 in register 9.
    When we are sure that the device sees the reference signal properly, then let's continue to get your PLL configuration going.

    Best regards,
    Patrick
  • 0 in reply to Patrick Kammermayer
    TI__Expert 5325 points
    Hello Yadav,
    a friendly reminder.

    Best regards,
    Patrick