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Quick-Start Procedure for Bypass LMFS8224 Mode in ADC32RF44 and Internal Clocking
29 SLAU620D – April 2016 – Revised August 2017
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ADC32RFxx-EVM
6 Quick-Start Procedure for Bypass LMFS8224 Mode in ADC32RF44 and Internal Clocking
This section lists the steps to configure ADC32RF44 in bypass mode. The steps are the same as that in
Section 3 with lower clock rate being the only difference.
6.1 TSW14J56
Please follow the steps listed in Section 3.1 .
6.2 ADC32RF44 EVM
Please follow the steps listed in Section 3.2 , with the exception of steps 5 and 6. Instead of supplying an
external clock as was done in steps 5 and 6, we will supply the clocking from the onboard LMX2582
frequency synthesizer.
Fs = 2.4576 GHz, LMFS 8224 Example
This example captures data from channel A of the ADC32RF44 EVM sampling at 2.4576 GHz with a
1800-MHz input source. The ADC requires the device clock and SYSREF signals to be present
before the
ADC can be properly configured. Use the following steps to configure into this mode:
1. Open the ADC32RFxx EVM GUI.
2. Verify that the green USB Status indicator is lit. If it is not lit, click the Reconnect? button and check
the USB Status indicator again. If it is still not lit then verify the EVM is connected to the computer
through USB. Whenever the USB link is disturbed, the GUI must obtain a new handle to address the
proper USB port, and the
Reconnect? button does that.
3. On the PLL1 tab of the LMK04828 tab, press the RESET button.
4. On the ADC32RF44-EVM, press SW1 ( ADC RESET ) to provide a hardware reset to the ADC.
5. Click on the Quick Setup tab.
6. Select the Nyquist Zone for the input. It will be 2nd Nyquist in this example setup (Fs = 2.4576M, Fin =
1800M).