What is the best way to interface 2 ADAR7251 chips to a BF707 so as to allow the maximum sample rate of 1.8 MS/s?
You can use SPORT peripheral to receive the data from ADC and use SPI peripheral to control the interface.
For BF707, we do not have any example code for interfacing ADC with SPORT peripheral. However, you can refer the ADC interface with SPORT peripheral in the SC589 Ez-Kit and refer the code example codes for the ADSP-SC57x processors in its Board Support Package. To download ADSP-SC5xx Board Support Package: http://download.analog.com/tools/EZBoards/SC5xx/Releases/Release_2.0.2/ADI_ADSP-SC5xx_EZ-KIT_Lite-Rel2.0.2.exe
Once you download and install the BSP, the example code can be found in the below path and would directly run on ADSP-SC57x & ADSP-BF707 Ezkit.<installation directory>\Analog Devices\ADSP-SC5xx_EZ-KIT_Lite-Rel2.0.0\ADSP-SC5xx_EZ-KIT\Examples\drivers\adc
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