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Cypress Semiconductor /psoc63 /BACKUP /CAL_CTL

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Interpret as CAL_CTL

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31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0CALIB_VAL0 (CALIB_SIGN)CALIB_SIGN 0 (CAL_OUT)CAL_OUT

Description

Oscillator calibration for absolute frequency

Fields

CALIB_VAL

Calibration value for absolute frequency (at a fixed temperature). Each step causes 128 ticks to be added or removed each hour. Effectively that means that each step is 1.085ppm (= 128/(606032,768)). Positive values 0x01-0x3c (1…60) add pulses, negative values remove pulses, thus giving a range of +/-65.1 ppm (limited by 60 minutes per hour, not the range of this field)

Calibration is performed hourly, starting at 59 minutes and 59 seconds, and applied as 64 ticks every 30 seconds until there have been 2*CALIB_VAL adjustments.
CALIB_SIGN

Calibration sign: 0= Negative sign: remove pulses (it takes more clock ticks to count one second) 1= Positive sign: add pulses (it takes less clock ticks to count one second)
CAL_OUT

Output enable for 512Hz signal for calibration and allow CALIB_VAL to be written. Note that calibration does not affect the 512Hz output signal.

Links

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Register License

Copyright 2016-2018 Cypress Semiconductor Corporation \n Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License.
You may obtain a copy of the License at \n
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and
limitations under the License.

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Register Reference

https://github.com/cmsis-svd/cmsis-svd-data