Controlling ADF5356 with SPI

Question

Hello we bought an ADF5356 eval board with the hope to use it to make the LO and downconversion from an mixer connected to the ADAR1000. 
 
 The setup is very well explained here: ez.analog.com/.../crawl-walk-run---the-journey-to-create-the-phaser 
 
 My question is very basic. In the testbed referred above the ADF5356 generates a signal that is divided for the LO. The signal from ADF5356 is about 9.5 GHz and as all the hardware runs in a Raspberry-Pi, we need to control the ADF5356 also via SPI using the RaspbPi. Hence: 
 
 Documentation on the ADF5356 is very limited. Where in the ADF5356 are the SPI Pins? I saw the datasheet but could not find them. Are they in the P1 ? 
 Do we need to sold a series limiting resistors between the SPI pins from the ADF5356 and the raspberry ? 
 I have a code (made in Gnuradio by Jon) to control the ADF5356. I first wanna solve the hardware issue 
 
 Let me know what you think. Thanks

bakcil · Accepted Answer

Hi ameno, " Between TP3, TP4, TP5, and TP6 and the CLK, DATA, LE and CE of the raspberry" Yes, this is right. I could not message you i think you closed it. It is not critical because it is on SPI pins and cannot handle high currents. you can use higher values 50 ohms or 100 ohms too. high values like 1k can limit the SPI limit like an RC filter. some examples : RC0603JR-0733RL YAGEO | Resistors | DigiKey RE0603FRE0751RL YAGEO | Resistors | DigiKey Regards, Burhan)

bakcil · Answer

Hi Ameno , you can check the link below : EV-ADF5356SD1Z (Rev. 0) 1, Which board are you mentioning that has the P1? 2. It is suggested to use higher than 33 ohms series resistors between ADF5356 SPI pins and the controller. Regards, Burhan

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Controlling ADF5356 with SPI