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LMH1219: Can LMH1219 IN1 support SMPTE ST-2082-1(12G)?

Nicky Lim
Genius 3195 points
Part Number: LMH1219
Other Parts Discussed in Thread: LMH1218

Hello,

Could you let me know if IN1(Diff 100 ohm) port can support SMPTE ST-2082-1(12G) or not?

Regards,

Nicky

  • 0
    TI__Guru* 88915 points

    Hi Nicky,

    Yes LMH1219 IN1 100-ohm differential input does support SMPTE. Please note we need to use either SMBus or SPI interface to setup the registers as noted below:

    RAW    FF    05    07    //Enable EQ core
    RAW    31    20    30    //Power up OUT0
    RAW    33    20    30    //Power up OUT1
    RAW    FF    04    07    //Enable lmh1218 core
    RAW    3F    04    04    //Override reference rate
    RAW    2F    00    C0    //Enable CDR lock to SMPTE rates
    RAW    3F    10    10    //Override IN_OUT_SEL pin
    RAW    31    03    03    //Select IN1 to OUT0 and OUT1
    RAW    3F    08    08    //Override OUT_CTRL
    RAW    09    00    20    //Disable independent output control
    RAW    1C    08    0C    //If locked OUT0/1 reclocked data else raw data
    RAW    0A    0C    0C    //Reset CDR
    RAW    0A    00    0C    //Release Reset

    Regards,, Nasser