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AD9361  rfpll  loading time

Question asked by padma@1969 on Jan 17, 2017
Latest reply on Jan 19, 2017 by Vinod

in AD9361 for  rfpll  (tx/rx ) frequency loading  and vco calibration it is taking 370us. We are using non os  drivers version 2015.  SPI  is running on 12mhz. The time it is taking from set_tx_lo frequency to spi writes is 240us and vco calibration time is 120us.  As per discussions  in the E-zone  the time for pll lock for new frequency is  spi witre time+  vco cal time.  Is there a process delay in the frequency loading routine, apart from the SPI writes time.Please clarify.