Using TICS Pro to Program the LMK04832-SP
9
SNAU252 – June 2020
Copyright © 2020, Texas Instruments Incorporated
LMK04832EVM-CVAL User’s Guide
Figure 5. Loading the Device
Once the device has been initially loaded, TICS Pro will automatically program changed registers, so it is
not necessary to reload the device upon subsequent changes in the device configuration. It is possible to
disable this functionality by ensuring there is no checkmark by the
Options
→
AutoUpdate
.
A default mode will be restored in the next step, therefore this step is not necessary. It is included,
however, to emphasize the importance of pressing
Ctrl+L
to load the device at least once after starting
TICS Pro, restoring a mode, or restoring a saved setup using the File menu.
See TICS Pro instructions located at
http://www.ti.com/tool/ticspro-sw/
.
5.4
Restoring a Default Mode
Click
Default configuration
→
CLKin1 122.88 MHz, OSCin 122.88 MHz, VCO1 2949.12 MHz
.
Press
Ctrl+L
to restore the default configuration.
Figure 6. Setting the Default Configuration for LMK04832-SP
For the purpose of this walkthrough, a default mode will be loaded to ensure a common starting point.
This is important because when TICS Pro is closed, it remembers the last settings used for a particular
device. Again, remember to press
Ctrl+L
as the first step after loading a default mode.
5.5
Visual Confirmation of Frequency Lock
After a default mode is restored and loaded LED D3 and D4 must illuminate when PLL1 and PLL2 are
locked to the reference clock applied to CLKin1. This assumes PLL1_LD_MUX =
PLL1_DLD
,
PLL2_LD_MUX =
PLL2_DLD
, and PLLX_LD_TYPE = Output (Push-Pull).
5.6
Enable Clock Outputs
The LMK04832-SP offers programmable clock output buffer formats, the evaluation board is shipped with
pre-configured output terminations. Refer to
to see a list of the outputs what the output format the
hardware is configured for out of the factory.
To measure Phase noise at one of the clock outputs, for example CLKout0:
1. Click on the
Clock Outputs
page,
2. Uncheck
CLKoutX_Y_PD
in the Clock Output box to enable the channel,
3. Set the following as needed:
