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DS90UB953-Q1: Can establish the FPD-LINK III without from sensor input

Nao
Genius 4905 points
Part Number: DS90UB953-Q1

Hi, E2E members,

DS90UB913A will establish the FPD-LINK III using an internal oscillator with out PCLK signal.
Does DS90UB953 have same feature?
Can DS90UB953 will establish the FPD-LINK III without from sensor input?
and it can be used I2C and GPIO?

Regards,
Nao

  • 0
    TI__Genius 10475 points
    The 953 has an internal clocking mode where the serializer uses the Always On Clock (AON) as the reference clock for the forward channel (a separate reference is provided to the image sensor or ISP).
    This is a new mode being added to the 953 datasheet which is under revision currently.
  • 0 in reply to Palaniappan Manickam
    Genius 4905 points
    Hi, Palaniappan

    Thanks for your quick reply.

    Does It mean that we can use I2C and GPIO on the follwing setting?
    - UB954 is being provided REFCLK, when operating in Sync CLK_IN clocking mode.
    - UB953 is being provided CLKIN, when operating in Non Sync clocking mode.

    Do we need more other setting, if we use I2C and GPIO of UB953 from UB954 side?
    Of course, I know I need to set path through and alias id setting etc..

    Regards,
    Nao
  • 0 in reply to Nao
    TI__Mastermind 30515 points
    Nao,
    The I2C and GPIO operation is not relied on sync. or Non-sync. mode, they can work in both modes. what is your concern on it? thanks.

    best regards,
    Steven
  • 0 in reply to Steven(Shenzhen) Shi
    Genius 4905 points
    Hi, Steven

    DS90UB913A has an internal internal oscillator and it will establish the FPD-LINK III using an internal oscillator without PCLK signal.
    Hence, a minimum setting of using I2C and GPIO to between USB913 and UB914 is only providing power on.

    On the other hand, DS90UB953 does not have internal oscillator.
    So, we can't use I2C and GPIO just providing power on.

    I would like to know that a minimum setting of using I2C and GPIO to between USB953 and UB954.
    I guess additional condition is provided REFCLK and CLKIN.
    is my understanding is correct?

    Regards,
    Nao
  • 0 in reply to Nao
    TI__Mastermind 30515 points
    Not.
    UB953 has internal oscillator and can work immediately after you power-on.
    what is your concern is that the duration time between UB9x3 power-on and I2C/GPIO available time? if yes, generally you should take care of ~100ms after power supply and system operation are becoming stable.

    best regards,
    Steven
  • 0 in reply to Steven(Shenzhen) Shi
    Genius 4905 points

    Hi, Steven

    Thank you for your quick reply.
    Where can I find about internal oscillator on data sheet?

    Regards,
    Nao

  • 0 in reply to Nao
    TI__Genius 10475 points
    Nao,
    There is an internal oscillator in 953, and currently the datasheet makes only a couple of references to it. You can search for "internal clock" and "internal oscillator" in the datasheet.
    More information about the internal clock is being added to the next revision of 953 datasheet which should be available soon on the web.
  • 0 in reply to Palaniappan Manickam
    Genius 4905 points
    Hi, Palaniappan

    Thanks for your reply.

    Regards,
    Nao