HFXO Initialization#

Initialize the HFXO oscillator.

Configure the HFXO for crystal or externally-generated waveform operation.

When operating in crystal mode, the value of the variable tuning capacitor Ctune is sourced from a prioritized list of locations:

  1. Device-specific tuning value in Device Information page (factory calibrated PCB and SiP modules with integrated HFXO)

  2. Device-specific tuning value in User Data page at offset 0x100 (manufacturing token TOKEN_MFG_CTUNE)

  3. Application-specific tuning value in configuration header sl_device_init_hfxo_config.h

  4. Default value in EMLIB initialization struct for HFXO

If using Simplicity Studio, this configuration header is also configurable through the Project Configurator by selecting the "Device Init: HFXO" configuration component.

Functions#

sl_status_t
sl_device_init_hfxo(void)

Initialize HFXO.

Function Documentation#

sl_device_init_hfxo#

sl_status_t sl_device_init_hfxo (void )

Initialize HFXO.

Parameters
N/A

Configure the HFXO for crystal or externally-generated waveform operation.

When operating in crystal mode, the value of the variable tuning capacitor Ctune is sourced from a prioritized list of locations:

  1. Device-specific tuning value in Device Information page (PCB and SiP modules with integrated HFXO)

  2. Device-specific tuning value in User Data page at offset 0x100 ("manufacturing token")

  3. Application-specific tuning value in configuration header sl_device_init_hfxo_config.h

  4. Default value in EMLIB initialization struct for HFXO

Returns

  • Status code

Return values

  • SL_STATUS_OK: HFXO started successfully


Definition at line 77 of file platform/service/device_init/inc/sl_device_init_hfxo.h