Using External Hardware Trigger to Initiate ADC Conversion on i.MX RT1170
●NXP has implemented a new ADC module on i.MXRT1170, which was not present on it's the previous crossover family members, such as iMX RT1050/RT1060. The main reason to do so is to increase the sample rate. This ADC module is not an update of the ADC module used on previous RT devices, but it is a completely different module. To ensure compatibility with the previous devices, there are upgrades in modules which have basically the same functionality as on the previous devices. This upgrade can be potentially invisible, but it may require an explanation.
●This document deals with the ADC hardware triggering capability implemented on iMXRT1170. There is only one hardware trigger source for the ADC on iMXRT1170. It is the ADC external trigger control (ADC_ETC). Its functionality is basically the same as on the previous RT devices. However, NXP completely changed the ADC module on iMXRT1170 to achieve a higher sample rate. Because of this NXP upgraded the ADC module with a logic which allows to interact with the ADC_ETC module to achieve the same functionality as on the previous iMXRT 4-digit devices.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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02/2021 |
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Rev. 0 |
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AN13097 |
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298 KB |
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