The 40 registers that are set by the rx_adc_setup() are not defined any documents. How can I achieve the descriptions of these registers ?
The available documents can be downloaded from this location:
AD9361 AND AD9364 INTEGRATED RF AGILE TRANSCEIVER DESIGN RESOURCES | Analog Devices
Some registers are factory registers that do not have their descriptions included in the documentation. Please rely on the provided drivers to initialize, configure and use the part.
I have already downloaded the available documents in the website.
And then, I run the reference software on the AD-FMCOMMS4-EBZ.
I did not understand the characteristic of the receive noise spectrum. As shown in the following spectrum, the noise level is increasing as the frequency increases.
I only could not understand one part in the reference software, this part is ad9361_rx_adc_setup().
This function adjust the 40 registers of ad9364 according to receive bandwidth and adc sampling rate.
As a consequence, I tried to understand the noise characteristic. Is there any model of ad9364 adc ?
The spectrum you are seeing is consistent with the noise spectrum of the ADC used in the device, sigma delta ADC.
Models can be obtained at the link below:
Analog Devices RF Transceivers Support from MATLAB and Simulink - Hardware Support
Retrieving data ...