Skyworks Si5338 - Overview of Configuring the Si5338

Si5338-RM
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2. Overview of Configuring the Si5338
In order to replicate the functionality of ClockBuilder Pro, a full register map must be created for all desired
features. To create the register map, the programmer must perform the following steps:
1. Configure the clock multiplexors.
See "4. Configuring The Input Selection" on page 12.
2. Determine the divider values for the desired input and output frequencies.
See "5. Configuring PLL Parameters" on page 15.
3. Configure the frequency and/or phase inc/dec feature (if needed).
See "6. Configuring the Frequency Increment/Decrement" on page 16.
See "7. Configuring Initial Phase Offset and Phase Step Size" on page 17.
4. Configure spread spectrum (if needed).
See "8. Configuring Spread Spectrum" on page 19.
5. Set the output driver format and supply voltage.
See "9. Configuring the Output Drivers" on page 22.
6. Assemble the register map.
See "10. Si5338 Registers" on page 28.
7. See "10.2. Miscellaneous Register Writes" on page 28 for additional registers that need to be set.
With the assembled register map, follow the procedure in Figure 9 of the Si5338 data sheet.