ADS7142-Q1 GUI Functional Modes
13
SBAU321A – November 2018 – Revised August 2019
Copyright © 2018–2019, Texas Instruments Incorporated
BOOSTXL-ADS7142-Q1 BoosterPack™ Plug-In Module
4
ADS7142-Q1 GUI Functional Modes
The ADS7142-Q1 device has the following functional modes:
•
Manual Mode:
In this mode, the host provides I
2
C frames to control conversion and read data after
each conversion.
•
Autonomous Mode:
The device features an internal data buffer that can store the conversion results
of the ADC in
Autonomous Mode
without the host controlling the conversion.
•
High Precision Mode:
In
High Precision Mode
, the results stored in the internal data buffer are
accumulated to increase the precision of the conversion results.
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.
4.1
Autonomous Mode
In the
Autonomous Conversion Mode
, the device generates the start of conversion pulses using an
internal oscillator on receiving the first start of conversion pulse from the host. This can be configured by
selecting
Autonomous Mode
as the
Conversion Mode
, selecting one of the
Operating Modes
from the
drop-down menu, and pressing the
SET
button. The ADS7142-Q1 device then generates the subsequent
start of conversion signals autonomously. The
Operating Modes
offered in
Autonomous Mode
are
described in the following sections.
4.1.1
Start Burst Mode
When
Start Bust Mode
is selected from the
Operating Modes
drop-down menu and the
SET
button is
pressed, the device is configured to store 16 conversion results into the data buffer of the device. The
device will stop converting once the data buffer is filled. To understand the steps required to configure the
device in this mode, refer to the
highlights the ADS7142-Q1 GUI working in
Start Burst Mode
.
Figure 12. Data Capture in Start Burst Mode
