Intel Agilex® 7 FPGA I-Series Transceiver-SoC Development Kit User Guide

ID 721605
Date 4/10/2023
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4.3. Control On-Board Clock through Clock Controller GUI

The Clock Controller GUI can change the on-board Si5394/Si5391-A/Si5391-B/Si5332/ZL30733 programmable PLLs to a large range of customized frequency. The instructions to run Clock Controller GUI are stated in the Run BTS GUI section. You can also start it using the BTS GUI icon “Clock”.

The clock controller communicates with the system Intel® MAX® 10 device through a 10-pin JTAG header J11 or USB port J10. Then, system Intel® MAX® 10 controls these programmable clock parts through a 2-wire I2C bus.

Note: You cannot run the stand-alone Clock Controller GUI application when the BTS or Power Monitor GUI is running at the same time. ZL30733 can be controlled only when a design in which the I2C interface is instantiated, such as the bts_config.sof under the board_test_system\image\ES folder has been downloaded to the FPGA.
Figure 26. Si5394

The following sections describe the Clock Controller buttons.


Reads the current frequency setting for the oscillator associated with the active tab.


Sets the frequency for the oscillator associated with the active tab back to its default value. This can also be accomplished by power cycling the board.


Sets the programmable oscillator frequency for the selected clock to the value in the OUTx output controls for Si5394. Frequency changes might take several milliseconds to take effect. You might see glitches on the clock during this time. Intel® recommends resetting the FPGA logic after changing frequencies.


Si5394 has a two-time rewritable non-volatile memory (NVM). You can generate the register list from the Clockbuilder Pro tool and import it into Si5394 to update the settings of the RAM. Register changes are volatile after power cycling.

Figure 27. Si5391-ASimilar control functions with Si5394.
Figure 28. Si5391-BSame with Si5391-A.
Figure 29. Si5332Similar control functions with Si5394. There is no default button for this clock but you can use Import or power cycle the board to get default clock frequencies.
Figure 30. ZL30733Similar control functions with Si5394.

The output frequency of ZL30733 is from 0.5 Hz to 750 MHz. It can generate up to 10 differential outputs with a total of 5 output frequency families.


ZL30733 has a multiple time writable non-volatile memory (NVM). You can generate the register list with the following format:
  • Register Write Command Link: X,<register_address>, <data_bytes>, <register_address> and <data_bytes>, where prefix must be “0x” are in hexadecimal
  • Wait Command Line: W, <time_microseconds>

Import it into ZL30733 to update the RAM settings. Register changes are volatile after power cycling. For more details, refer to ZL30733 on the Microchip website.