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Silicon Labs /Series1 /EFR32MG1B /EFR32MG1B132F256GJ43 /CMU /HFXOCTRL

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Interpret as HFXOCTRL

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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 0 (MODE)MODE 0 (AUTOCMD)PEAKDETSHUNTOPTMODE 0 (LOWPOWER)LOWPOWER 0 (XTI2GND)XTI2GND 0 (XTO2GND)XTO2GND 0 (0CYCLES)LFTIMEOUT 0 (AUTOSTARTEM0EM1)AUTOSTARTEM0EM1 0 (AUTOSTARTSELEM0EM1)AUTOSTARTSELEM0EM1

PEAKDETSHUNTOPTMODE=AUTOCMD, LFTIMEOUT=0CYCLES

Description

HFXO Control Register

Fields

MODE

HFXO Mode
PEAKDETSHUNTOPTMODE

HFXO Automatic Peak Detection and Shunt Current Optimization Mode

0 (AUTOCMD): Automatic control of HFXO peak detection and shunt optimization sequences. CMU_CMD HFXOPEAKDETSTART and HFXOSHUNTOPTSTART can also be used.

1 (CMD): CMU_CMD HFXOPEAKDETSTART and HFXOSHUNTOPTSTART can be used to trigger peak detection and shunt optimization sequences.

2 (MANUAL): CMU_HFXOSTEADYSTATECTRL IBTRIMXOCORE, REGISH, REGSELILOW, and PEAKDETEN are under full software control and are allowed to be changed once HFXO is ready.
LOWPOWER

Low Power Mode Control
XTI2GND

Clamp HFXTAL_N Pin to Ground When HFXO Oscillator is Off
XTO2GND

Clamp HFXTAL_P Pin to Ground When HFXO Oscillator is Off
LFTIMEOUT

HFXO Low Frequency Timeout

0 (0CYCLES): Timeout period of 0 cycles (disabled)

1 (2CYCLES): Timeout period of 2 cycles

2 (4CYCLES): Timeout period of 4 cycles

3 (16CYCLES): Timeout period of 16 cycles

4 (32CYCLES): Timeout period of 32 cycles

5 (64CYCLES): Timeout period of 64 cycles

6 (1KCYCLES): Timeout period of 1024 cycles

7 (4KCYCLES): Timeout period of 4096 cycles
AUTOSTARTEM0EM1

Automatically Start of HFXO Upon EM0/EM1 Entry From EM2/EM3
AUTOSTARTSELEM0EM1

Automatically Start and Select of HFXO Upon EM0/EM1 Entry From EM2/EM3

Links

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Register License

  • SPDX-License-Identifier: Zlib
  • The licensor of this software is Silicon Laboratories Inc.
  • This software is provided ‘as-is’, without any express or implied
  • warranty. In no event will the authors be held liable for any damages
  • arising from the use of this software.
  • Permission is granted to anyone to use this software for any purpose,
  • including commercial applications, and to alter it and redistribute it
  • freely, subject to the following restrictions:
    1. The origin of this software must not be misrepresented; you must not
  • claim that you wrote the original software. If you use this software
  • in a product, an acknowledgment in the product documentation would be
  • appreciated but is not required.
    1. Altered source versions must be plainly marked as such, and must not be
  • misrepresented as being the original software.
    1. This notice may not be removed or altered from any source distribution.
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Register Reference

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