AMC7812B Datasheet, PDF (31/92 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812B
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SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013
Conversion Mode
Two types of ADC conversions are available: direct mode and auto mode. The conversion mode (CMODE) bit of
the AMC configuration 0 register specifies the conversion mode.
In direct mode, each analog channel within the specified group is converted a single time. After the last channel
is converted, the ADC enters an idle state and waits for a new trigger.
Auto mode is a continuous operation. In auto mode, each analog channel within the specified group is converted
sequentially and repeatedly.
The flow chart of the ADC conversion sequence in Figure 82 shows the conversion process.
Start
(Reset)
Wait for
ADC Trigger
First
Conversion
Yes
Stop Current
Conversion
Yes
Yes
New
Trigger Occurred
or CMODE
Changed?
No
Has
Input Channel
Register been
Rewritten?
No
Has
Input Threshold
Register been
Rewritten?
No
Is this the
Yes
Last
Conversion?
Yes
Direct
Mode?
No
Convert
Next Channel
No
Figure 82. ADC Conversion Sequence
Copyright © 2013, Texas Instruments Incorporated
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