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UART 'AMR' support

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UART 'AMR' support

‎11-21-2018 08:53 PM
513 Views
scottm
Senior Contributor II

The MK22DX256VLF5 reference manual states that all of the UARTs have AMR support.  It doesn't define AMR, and no further mention is made of this.  Does anyone know what this is?

My best guess is that it's a reference to automatic meter reading, and maybe a protocol like IEC 61107, but I don't see anything else in the documentation to support that.

Searching NXP.com brings up information on anisotropic magnetoresistive angular position sensors, and the GSM adaptive multi-rate codec.  Neither of those have anything to do with UARTs.

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‎11-22-2018 06:20 PM
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mjbcswitzerland
Specialist V

Scott

I also suspect it means Automatic Meter Reading (from smart electrical metering - or AMI - Automatic Metering Infrastructure) for connection to a RF module of some sort. Perhaps a UART based bus with open drain is required in such systems since that looks to be the main reason for the UARTs to be AMR compliant.

Regards

Mark

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