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ADC32RF80 Quick-Start Procedure (Digital DDC Block - Decimation Plus NCO) External Clocking
Figure 15. ADC32RFxxEVM GUI JESD204b Configuration Tab
10. Enter "2949.12" in the box for Sample Clock rate in MHz.
11. Enter "1900" in the box for the Channel A DDC0 NCO1 frequency. The control value for NCO1 should
become 42222.
NOTE: These settings only apply with Fs = 2.94912 GHz. The NCOs in the ADC32RF80 are set to a
desired LO frequency by a numeric control that is a fraction of the sampling frequency. If the
sampling frequency changes, then the NCO frequency changes. In order to find the input
tone in the resulting FFT capture, the sampling frequency and the NCO frequency must be
known in order to know where the input tone should be located in the final FFT result.
4.3
High Speed Data Converter Pro (HSDC Pro)
1. Open High Speed Data Converter Pro (v4.2 or newer) by going to Start Menu → All Programs →
Texas Instruments → High Speed Data Converter Pro.
2. Click OK to connect to the TSW14J56. If there is more than one TSW14J56 connected to the host PC,
select the appropriate serial number of the board to be programmed.
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ADC32RF45/RF80 EVM Quick Startup Guide
Copyright © 2016, Texas Instruments Incorporated
www.ti.com
SLAU620A – April 2016 – Revised May 2016
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