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EDIT: Here is a schematic of my circuit. I am using an EVAL-AD5754R Evaluation Board from Analog Devices. Here is a link to the AD5754 chip data sheet. I'm providing 5V power through the J7 terminal (via the UNO), and supplying the SPI connections through the J8 header. The EVAL-AD5754R board works perfectly via USB and their software, but now I am transitioning to controlling it through Arduino/SPI. As you can see I'm temporarily using a 12V battery for the analog voltage supply - this is until I build a regulated circuit.

EDIT: Here is a schematic of my circuit. I am using an EVAL-AD5754R Evaluation Board from Analog Devices. Here is a link to the AD5754 chip data sheet. I'm providing 5V power through the J7 terminal (via the UNO), and supplying the SPI connections through the J8 header. The EVAL-AD5754R board works perfectly via USB and their software, but now I am transitioning to controlling it through Arduino/SPI. As you can see I'm temporarily using a 12V battery for the analog voltage supply - this is until I build a regulated circuit. J8 DGND pins are shown unconnected on the schematic below, but I've tried connecting one of them to the UNO's GND to no effect.

This is the configuration of the linkers:

This is the configuration of the linkers which act to configure the eval board:

This is an annotated table describing J8 header connections (UNO <-> EVAL-AD5754R):

EDIT: Here is a schematic of my circuit. I am using an EVAL-AD5754R Evaluation Board from Analog Devices. Here is a link to the AD5754 chip data sheet. I'm providing 5V power through the J7 terminal (via the UNO), and supplying the SPI connections through the J8 header. The EVAL-AD5754R board works perfectly via USB and their software, but now I am transitioning to controlling it through Arduino/SPI. As you can see I'm temporarily using a 12V battery for the analog voltage supply - this is until I build a regulated circuit.

This is the configuration of the linkers: