System and method for multi-channel control system
First Claim
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1. A method of operating a multichannel control system, the method comprising:
- writing a command on an interface bus to activate a first channel;
activating an output on the first channel after writing the command;
while activating the output on the first channel, sampling a signal derived from a channel other than the first channel;
after sampling the signal derived from the channel other than the first channel, sampling a signal derived from the first channel;
converting the sampled signal from the first channel from an analog domain to a digital domain representation;
writing the digital domain representation to a first channel analog to digital (A/D) register;
writing the command on the interface bus to read the first channel A/D register; and
reading the first channel A/D register on the interface bus.
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Abstract
In accordance with an embodiment, a system has a pulse width modulation controller configured to successively activate each of a plurality of channels in its own individual channel time slot. The system also has a sampling multiplexer configured to successively sample a signal derived from each of the plurality of channels during each individual channel time slot. Each individual time slot has an individual sampling sequence.
12 Citations
14 Claims
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1. A method of operating a multichannel control system, the method comprising:
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writing a command on an interface bus to activate a first channel; activating an output on the first channel after writing the command; while activating the output on the first channel, sampling a signal derived from a channel other than the first channel; after sampling the signal derived from the channel other than the first channel, sampling a signal derived from the first channel; converting the sampled signal from the first channel from an analog domain to a digital domain representation; writing the digital domain representation to a first channel analog to digital (A/D) register; writing the command on the interface bus to read the first channel A/D register; and reading the first channel A/D register on the interface bus. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A multichannel control system comprising:
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a controller configured to perform the steps of writing a command on an interface bus to activate a first channel, activating an output on the first channel after writing the command, a sampling multiplexer configured to; sample a signal derived from a channel other than the first channel, while the output on the first channel is activated, after sampling the signal derived from the channel other than the first channel, sampling a signal derived from the first channel; a first channel analog to digital (A/D) register; and an analog to digital converter configured to convert the sampled signal from the first channel from an analog domain to a digital domain representation, and write the digital domain representation to the first channel A/D register, wherein the controller is further configured to write a command on the interface bus to read the first channel A/D register, and read the first channel A/D register on the interface bus. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification