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HMC764 SPI command

Hi All,

How to create the /WR and RD command? In the datasheet SPI write OP the first is /WR. The /WR is zero? or other command for it?

btw, Is I need send 32bit data to HMC764? 1 is /WR + 6bit reg address + 24 bit data + 1 bit x??

pls help me know it

Many Thanks

  • Hi there, 

    Write vs Read depends on the state of SEN and SDI. Please refer to the timing diagram and description on pages 13 & 14 of the user guide titled, PLL's with Integrated VCO Microwave Applications Product and Operating Guide for more information.  This is available on the Full Product page for the HMC764. 

    Best Regards, 

    Marty