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US 12,549,189 B2Granted
Analog-to-digital converter (ADC) auto-sequential canning with expansion multiplexer(s) and auxiliary circuit configuration control(s)
AssigneeNXP USA, Inc.
InventorsChongli Wu, Zhijie Qin, Yaoqiao Li, Ying Wang
Life of this patent
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Abstract
Systems and methods for Analog-to-Digital Converter (ADC) auto-sequential scanning with expansion multiplexer(s) and auxiliary circuit configuration control(s). In some embodiments, an electronic circuit may include: a multiplexer; an Analog-to-Digital Converter (ADC) coupled to the multiplexer; and a control circuit coupled to the ADC and to the multiplexer, where the control circuit is configured to, as part of an auto-sequential scan, select one of a plurality of input channels coupled to the multiplexer via an expansion multiplexer.
Claims20
An electronic circuit, comprising:
- a multiplexer;
- an Analog-to-Digital Converter (ADC) coupled to the multiplexer;
- and
- a control circuit coupled to the ADC and to the multiplexer, wherein the control circuit is configured to, as part of an auto-sequential scan, select one of a plurality of input channels coupled to the multiplexer via an expansion multiplexer, wherein an output of the expansion multiplexer is coupled to a fixed one of another plurality of input channels of the multiplexer, and
- wherein as part of the auto-sequential scan, the control circuit is configured to select a sequence of input channels among at least one of the plurality of input channels, or the other plurality of input channels, at non-periodic intervals and without generating an interrupt until the sequence is completed.
2 more elements
An electronic circuit, comprising:
- a multiplexer;
- an Analog-to-Digital Converter (ADC) coupled to the multiplexer;
- and
- a control circuit coupled to the ADC and to the multiplexer, wherein the control circuit is configured to, as part of an auto-sequential scan, select one of a plurality of input channels coupled to the multiplexer via an expansion multiplexer,
- wherein the control circuit is configured to manipulate:
- (i) a first set of registers to select one of the other plurality of input channels, and (ii) a second set of registers to select the one of the plurality of input channels.
3 more elements
A method, comprising:
- starting an auto-sequential scan of a first plurality of input channels coupled to an Analog-to-Digital Converter (ADC) via a first multiplexer;
- during the auto-sequential scan, selecting one of a second plurality of input channels coupled to a second multiplexer, wherein an output of the second multiplexer is coupled to one of the first plurality of input channels;
- and
- during the auto-sequential scan, selecting a sequence of input channels among at least one of the first or second pluralities of input channels at non-periodic intervals and without generating an interrupt until the sequence is completed.
1 more element
A method, comprising:
- starting an auto-sequential scan of a first plurality of input channels coupled to an Analog-to-Digital Converter (ADC) via a first multiplexer;
- and
- during the auto-sequential scan, selecting one of a second plurality of input channels coupled to a second multiplexer, wherein an output of the second multiplexer is coupled to one of the first plurality of input channels,
- wherein selecting the one of the second plurality of input channels coupled to the second multiplexer comprises reading a value stored in an expansion multiplexer channel selection register.
1 more element
A method, comprising:
- starting an auto-sequential scan of a first plurality of input channels coupled to an Analog-to-Digital Converter (ADC) via a first multiplexer;
- and
- during the auto-sequential scan, selecting one of a second plurality of input channels coupled to a second multiplexer, wherein an output of the second multiplexer is coupled to one of the first plurality of input channels,
- wherein selecting the one of the second plurality of input channels coupled to the second multiplexer comprises reading a value stored in an auxiliary configuration register.
1 more element
A method, comprising:
- starting an auto-sequential scan of a first plurality of input channels coupled to an Analog-to-Digital Converter (ADC) via a first multiplexer;
- and
- during the auto-sequential scan, selecting one of a second plurality of input channels coupled to a second multiplexer, wherein an output of the second multiplexer is coupled to one of the first plurality of input channels,
- wherein selecting the one of the second plurality of input channels coupled to the second multiplexer comprises reading an auxiliary configuration and expansion multiplexer disable register.
1 more element
Dependencies are inferred from the claim text.