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4.3. Control On-Board Clock through Clock Controller GUI
The Clock Controller GUI can change the on-board Si5391/Si5395-1/Si5395-2/Si5518. The instructions to run Clock Controller GUI are stated in the Run BTS GUI. 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.
The following sections describe the Clock Controller buttons.
Read
Reads the current frequency setting for the oscillator associated with the active tab.
Default
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.
Set
Sets the programmable oscillator frequency for the selected clock to the value in the OUTx output controls for Si5391. 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.
Import
Si5391 has a two-time rewritable non-volatile memory (NVM). You can generate the register list from the Clockbuilder Pro tool and import it into Si5391 to update the settings of the RAM. Register changes are volatile after power cycling.
Import
You can generate the register list from the Clockbuilder Pro tool and import it into Si5518 to update the settings of RAM. Register changes are volatile after power cycling.
Default
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.
Soft Reset
Initiate a global soft reset. The global soft reset will not download the firmware and frequency plan from NVM. Instead, it will restart the firmware and frequency plan currently running on the device. The device will act like it has been rebooted.