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3.3.2
Functional Configuration Tab
As
Figure 8
shows, the ADS7066 device configuration tab has two sections. The left-most section lists the
multiple functions the user can configure. These options enable the user to navigate through the various
functions of the ADS7066 in a structure and clear manner. The main section displays the configuration
options for each function.
The Device Configurations available are: Mode Configuration, Channel Selection, Averager, and Cyclic
Redundancy Check (CRC)
3.3.2.1
Mode Configuration
The ADS7066 can operate in three sampling modes. The mode configuration tab
user to select the device mode of operation.
The ADS7066 device has the following sampling modes:
•
Manual Mode: Allows the external host processor to directly request and control when data is
sampled. The host provides SPI frames to control conversions and the captured data are returned over
the SPI bus after each conversion.
•
Auto-Sequence Mode: The host can configure the device to scan through the enabled analog input
channels. The host must provide continuous clocks (SCLK) to the device to scan through the channels
and to read the data from the device. The MUX automatically switches through the predetermined
channel sequence, and the data conversion results are sent through the data bus.
•
On-the-Fly Mode: The first 5 bits of SDI select the first channel to be sampled before the CS rising
edge. There is no latency between channel selection and ADC output data since the ADC samples the
next channel on the rising edge of CS.
The device powers up in manual mode and can be configured into any of the functional modes by writing
the configuration registers for the desired mode.
Figure 8. ADS7066 Device Configuration Tab Displaying Mode Configuration
SBAU342A – February 2020 – Revised June 2020
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Copyright © 2020, Texas Instruments Incorporated
ADS7066 EVM Initial Setup
(Figure
8) allows the
ADS7066EVM-PDK Evaluation Module
9
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