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LMK04803 programming

Bhavya Babu
Intellectual 465 points

Other Parts Discussed in Thread: LMK04803

Hi,

The programming interface for LMK04803 is microwire.

Can I use a device like FT4222H for programming this device?

Regards,

Bhavya

  • 0
    TI__Mastermind 28590 points

    Yes, you can use the FT4222H for programming this device.  It appears this device has a CLK for clock, a MISO for data, and SS#O for slave select.  Microwire is the same as SPI except that it uses an LE pulse instead of CS*.  However in a normal use case, there is no issue with using SPI type CS* for LE, the critical thing is the rising edge after sending the pulses.

    When programming a sequence of registers the CS* becomes like an elongated LE pulse.  If desired, you can further emulate the LE pulse by programming the last register twice.

    See attached doc for more details on the few cases where LE may matter.


    The Finer Points of a UWIRE Data Transfer.pdf