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Original question:

Generation of three synced clock signals 48kHz / 3.072MHz / 12.288MHz

support 74.25M / 148.5M output

Jason Shen
Intellectual 1945 points
Other Parts Discussed in Thread: CDCE6214, CDCI6214, CDCEL913, LMK03318, CDCE913, CDCS503, USB2ANY, CLOCKPRO

Dears

Could our device support 74.25M / 148.5M input, and also same frequency output, with SSC function? thanks

Jun Shen

  • 0
    TI__Intellectual 1945 points

    And additional question, about the SSC modulation frequency? do we have this parameter?  thanks

  • 0
    TI__Expert 5010 points

    Hello Jun Shen,

    The devices listed on the Original Question are CDCE6214, CDCI6214, CDCEL913 and LMK03318.

    CDCE6214 has input and PLL supported for both 74.25MHz and 148.5MHz (See details in Table 4 for configuration details). I will have to check if SSC is capable at these frequencies.

    CDCI6214 has removed the SSC support from CDCE6214.

    CDCEL913 should support both frequencies with SSC functionality utilizing single-ended input and output.

    LMK03318 does not support SSC but can support both of these output frequencies.

    Will your device be a Clock Generator as well? Please take a look at our sorting tool found at ti.com when searching under the 'Product' and 'Clocks & timing' tabs. Hopefully this helps!

  • 0 in reply to Aaron Black
    TI__Intellectual 1945 points

    Aaron

    Thanks, and the device number is CDCE913, currently customer just want use 1ch, with same input and output frequency, with the selectable SSC function, and do not need the I2C control, so want to know if we have some guide or reference schematic to use the CDCE913 in this way, like our CDCS503, very simple, but support higher input frequency.

    thanks

    Jun Shen

  • 0 in reply to Jason Shen
    TI__Expert 5010 points

    Hello Jun Shen,

    Unfortunately, the SSC is selected through I2C on the CDCE913 while the CDCS503 has pins that can be used to select this functionality. If you would like to save an EEPROM image this could be done on start-up. I would recommend seeing the CDCE9xx family User's guide as well as CDCE9xx & CDCEx06 Programming Evaluation Module.

    I have also asked about the CDCE6214 and this is also able to support these frequencies and SSC functionality. I would advise the use of the TICSPRO wizard for this device as it is incredibly helpful in finding settings of the PLL.

  • 0 in reply to Aaron Black
    TI__Intellectual 1945 points

    Hi Aaron

    Thanks for the help, and currently we are working on CDCE913, seemed this device can be pro programed for the EEPROM once, like in the a assembly line. and after that the device can be setting by the PIN, or using the new setting in the EEPROM after power up, right?

    By the way, do we have some programing tools  to program  the CDCE913, like the USB2ANY, USBTOGPIO?

    Thanks

    Jun Shen

  • 0 in reply to Jason Shen
    TI__Expert 5010 points

    Hello Shen,

    We offer a Programmable EVM that can be used to accomplish programming EEPROM. Please see this CDCE(L)9xx and CDCEx06 Programming Evaluation Module as a reference. All that is required is a 2.0 USB cable as there is a built in MSP430. The user's program is TI ClockPro.

    If you are looking for just a performance board please see the CDCE(L)9xx Performance Evaluation Module as this offers programmability but this is just to check performance.