CTSD16OFFG indicates a CTSD16CLK abnormality or fault but not necessarily failure. If never cleared (which is only done in software) then the bit could be set during device start-up or initialization. From section 26.2.3.5 of the device User's Guide: "For devices that contain a CTSD16 module, the VREFBG signal is driven external to the device even if it is only used internally and requires that PxSEL.y bit = 1. If PxSEL.y is not set, VREFBG is not driven even internal to the chip. The VREFBG signal is enabled continuously when REFON = 1 and REFOUT = 1. The CTSD16 module only requests VREFBG during active conversions, when CTSD16SC = 1, and bursts the VREFBG signal unless REFON = 1 and REFOUT = 1. The DAC12_A similarly bursts the request for the voltage." Regards, Ryan
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