Analog Devices ADRV9005 Reference Manual page 229

Reference Manual
POWER SAVING AND MONITOR MODE
3. Upload the SPI data needed to wake the external PLL.
4. Select the 'Enable External PLL' option.
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Figure 207. Enable External PLL with SPI Main Settings 1
Figure 208. Enable External PLL with SPI Main Settings 2
ADRV9001
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