Using the AARDVARK
11
SNAU212 – June 2017
Copyright © 2017, Texas Instruments Incorporated
ADC1xD1x00CVAL Board User’s Guide
(c) In the Aardvark I2C/SPI Control Center software, select Aardvark
→
Target Power. On the I2C/SPI
Level Shifter board, both LEDs for TARGET (orange) and POWER (green) should light up.
4. Using the software
(a) Type the command (hex) in the MOSI Message window and hit the Send button. For example,
putting the ADC into DESQ Mode:
5. Tips and tricks
(a) During the entire time the ADC is being used in SPI Mode (also known as Extended Control Mode),
the jumper on the EVAL board for ECEB stays connected to GND. Moving the ECEB jumper from
GND to VA back to GND again is a short-cut to reset the SPI registers back to their default values
(b) The Calibration pin is OR’d with the Calibration bit in the SPI internally to the ADC, that is, the pin
remains active when the ADC is in ECM. To calibrate the ADC, it is more convenient to use the
Calibration pin (move the jumper from GND to VA and back to GND) than to write the SPI twice.
