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PLL
Functions

PLL
[RCC Exported Functions]

Functions

__STATIC_INLINE void LL_RCC_PLL_Enable (void)
 Enable PLL CR PLLON LL_RCC_PLL_Enable.
__STATIC_INLINE void LL_RCC_PLL_Disable (void)
 Disable PLL.
__STATIC_INLINE uint32_t LL_RCC_PLL_IsReady (void)
 Check if PLL Ready CR PLLRDY LL_RCC_PLL_IsReady.
__STATIC_INLINE void LL_RCC_PLL_ConfigDomain_SYS (uint32_t Source, uint32_t PLLM, uint32_t PLLN, uint32_t PLLR)
 Configure PLL used for SYSCLK Domain.
__STATIC_INLINE void LL_RCC_PLL_ConfigDomain_SAI (uint32_t Source, uint32_t PLLM, uint32_t PLLN, uint32_t PLLP)
 Configure PLL used for SAI domain clock.
__STATIC_INLINE void LL_RCC_PLL_ConfigDomain_48M (uint32_t Source, uint32_t PLLM, uint32_t PLLN, uint32_t PLLQ)
 Configure PLL used for 48Mhz domain clock.
__STATIC_INLINE uint32_t LL_RCC_PLL_GetN (void)
 Get Main PLL multiplication factor for VCO PLLCFGR PLLN LL_RCC_PLL_GetN.
__STATIC_INLINE uint32_t LL_RCC_PLL_GetP (void)
 Get Main PLL division factor for PLLP.
__STATIC_INLINE uint32_t LL_RCC_PLL_GetQ (void)
 Get Main PLL division factor for PLLQ.
__STATIC_INLINE uint32_t LL_RCC_PLL_GetR (void)
 Get Main PLL division factor for PLLR.
__STATIC_INLINE uint32_t LL_RCC_PLL_GetMainSource (void)
 Get the oscillator used as PLL clock source.
__STATIC_INLINE uint32_t LL_RCC_PLL_GetDivider (void)
 Get Division factor for the main PLL and other PLL PLLCFGR PLLM LL_RCC_PLL_GetDivider.
__STATIC_INLINE void LL_RCC_PLL_EnableDomain_SAI (void)
 Enable PLL output mapped on SAI domain clock PLLCFGR PLLPEN LL_RCC_PLL_EnableDomain_SAI.
__STATIC_INLINE void LL_RCC_PLL_DisableDomain_SAI (void)
 Disable PLL output mapped on SAI domain clock.
__STATIC_INLINE void LL_RCC_PLL_EnableDomain_48M (void)
 Enable PLL output mapped on 48MHz domain clock PLLCFGR PLLQEN LL_RCC_PLL_EnableDomain_48M.
__STATIC_INLINE void LL_RCC_PLL_DisableDomain_48M (void)
 Disable PLL output mapped on 48MHz domain clock.
__STATIC_INLINE void LL_RCC_PLL_EnableDomain_SYS (void)
 Enable PLL output mapped on SYSCLK domain PLLCFGR PLLREN LL_RCC_PLL_EnableDomain_SYS.
__STATIC_INLINE void LL_RCC_PLL_DisableDomain_SYS (void)
 Disable PLL output mapped on SYSCLK domain.

Function Documentation

__STATIC_INLINE void LL_RCC_PLL_ConfigDomain_48M ( uint32_t  Source,
uint32_t  PLLM,
uint32_t  PLLN,
uint32_t  PLLQ 
)

Configure PLL used for 48Mhz domain clock.

Note:
PLL Source and PLLM Divider can be written only when PLL, PLLSAI1 and PLLSAI2 (*) are disabled
PLLN/PLLQ can be written only when PLL is disabled
This can be selected for USB, RNG, SDMMC PLLCFGR PLLSRC LL_RCC_PLL_ConfigDomain_48M
PLLCFGR PLLM LL_RCC_PLL_ConfigDomain_48M
PLLCFGR PLLN LL_RCC_PLL_ConfigDomain_48M
PLLCFGR PLLQ LL_RCC_PLL_ConfigDomain_48M
Parameters:
SourceThis parameter can be one of the following values:

  • LL_RCC_PLLSOURCE_NONE
  • LL_RCC_PLLSOURCE_MSI
  • LL_RCC_PLLSOURCE_HSI
  • LL_RCC_PLLSOURCE_HSE
PLLMThis parameter can be one of the following values:

  • LL_RCC_PLLM_DIV_1
  • LL_RCC_PLLM_DIV_2
  • LL_RCC_PLLM_DIV_3
  • LL_RCC_PLLM_DIV_4
  • LL_RCC_PLLM_DIV_5
  • LL_RCC_PLLM_DIV_6
  • LL_RCC_PLLM_DIV_7
  • LL_RCC_PLLM_DIV_8
PLLNBetween 8 and 86
PLLQThis parameter can be one of the following values:

  • LL_RCC_PLLQ_DIV_2
  • LL_RCC_PLLQ_DIV_4
  • LL_RCC_PLLQ_DIV_6
  • LL_RCC_PLLQ_DIV_8
Return values:
None

Definition at line 2954 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_ConfigDomain_SAI ( uint32_t  Source,
uint32_t  PLLM,
uint32_t  PLLN,
uint32_t  PLLP 
)

Configure PLL used for SAI domain clock.

Note:
PLL Source and PLLM Divider can be written only when PLL, PLLSAI1 and PLLSAI2 (*) are disabled
PLLN/PLLP can be written only when PLL is disabled
This can be selected for SAI1 or SAI2 (*) PLLCFGR PLLSRC LL_RCC_PLL_ConfigDomain_SAI
PLLCFGR PLLM LL_RCC_PLL_ConfigDomain_SAI
PLLCFGR PLLN LL_RCC_PLL_ConfigDomain_SAI
PLLCFGR PLLPDIV LL_RCC_PLL_ConfigDomain_SAI
Parameters:
SourceThis parameter can be one of the following values:

  • LL_RCC_PLLSOURCE_NONE
  • LL_RCC_PLLSOURCE_MSI
  • LL_RCC_PLLSOURCE_HSI
  • LL_RCC_PLLSOURCE_HSE
PLLMThis parameter can be one of the following values:

  • LL_RCC_PLLM_DIV_1
  • LL_RCC_PLLM_DIV_2
  • LL_RCC_PLLM_DIV_3
  • LL_RCC_PLLM_DIV_4
  • LL_RCC_PLLM_DIV_5
  • LL_RCC_PLLM_DIV_6
  • LL_RCC_PLLM_DIV_7
  • LL_RCC_PLLM_DIV_8
PLLNBetween 8 and 86
PLLPThis parameter can be one of the following values:

  • LL_RCC_PLLP_DIV_2
  • LL_RCC_PLLP_DIV_3
  • LL_RCC_PLLP_DIV_4
  • LL_RCC_PLLP_DIV_5
  • LL_RCC_PLLP_DIV_6
  • LL_RCC_PLLP_DIV_7
  • LL_RCC_PLLP_DIV_8
  • LL_RCC_PLLP_DIV_9
  • LL_RCC_PLLP_DIV_10
  • LL_RCC_PLLP_DIV_11
  • LL_RCC_PLLP_DIV_12
  • LL_RCC_PLLP_DIV_13
  • LL_RCC_PLLP_DIV_14
  • LL_RCC_PLLP_DIV_15
  • LL_RCC_PLLP_DIV_16
  • LL_RCC_PLLP_DIV_17
  • LL_RCC_PLLP_DIV_18
  • LL_RCC_PLLP_DIV_19
  • LL_RCC_PLLP_DIV_20
  • LL_RCC_PLLP_DIV_21
  • LL_RCC_PLLP_DIV_22
  • LL_RCC_PLLP_DIV_23
  • LL_RCC_PLLP_DIV_24
  • LL_RCC_PLLP_DIV_25
  • LL_RCC_PLLP_DIV_26
  • LL_RCC_PLLP_DIV_27
  • LL_RCC_PLLP_DIV_28
  • LL_RCC_PLLP_DIV_29
  • LL_RCC_PLLP_DIV_30
  • LL_RCC_PLLP_DIV_31
Return values:
NoneConfigure PLL used for SAI domain clock
Note:
PLL Source and PLLM Divider can be written only when PLL, PLLSAI1 and PLLSAI2 (*) are disabled
PLLN/PLLP can be written only when PLL is disabled
This can be selected for SAI1 or SAI2 (*) PLLCFGR PLLSRC LL_RCC_PLL_ConfigDomain_SAI
PLLCFGR PLLM LL_RCC_PLL_ConfigDomain_SAI
PLLCFGR PLLN LL_RCC_PLL_ConfigDomain_SAI
PLLCFGR PLLP LL_RCC_PLL_ConfigDomain_SAI
Parameters:
SourceThis parameter can be one of the following values:

  • LL_RCC_PLLSOURCE_NONE
  • LL_RCC_PLLSOURCE_MSI
  • LL_RCC_PLLSOURCE_HSI
  • LL_RCC_PLLSOURCE_HSE
PLLMThis parameter can be one of the following values:

  • LL_RCC_PLLM_DIV_1
  • LL_RCC_PLLM_DIV_2
  • LL_RCC_PLLM_DIV_3
  • LL_RCC_PLLM_DIV_4
  • LL_RCC_PLLM_DIV_5
  • LL_RCC_PLLM_DIV_6
  • LL_RCC_PLLM_DIV_7
  • LL_RCC_PLLM_DIV_8
PLLNBetween 8 and 86
PLLPThis parameter can be one of the following values:

  • LL_RCC_PLLP_DIV_7
  • LL_RCC_PLLP_DIV_17
Return values:
None

Definition at line 2911 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_ConfigDomain_SYS ( uint32_t  Source,
uint32_t  PLLM,
uint32_t  PLLN,
uint32_t  PLLR 
)

Configure PLL used for SYSCLK Domain.

Note:
PLL Source and PLLM Divider can be written only when PLL, PLLSAI1 and PLLSAI2 (*) are disabled
PLLN/PLLR can be written only when PLL is disabled PLLCFGR PLLSRC LL_RCC_PLL_ConfigDomain_SYS
PLLCFGR PLLM LL_RCC_PLL_ConfigDomain_SYS
PLLCFGR PLLN LL_RCC_PLL_ConfigDomain_SYS
PLLCFGR PLLR LL_RCC_PLL_ConfigDomain_SYS
Parameters:
SourceThis parameter can be one of the following values:

  • LL_RCC_PLLSOURCE_NONE
  • LL_RCC_PLLSOURCE_MSI
  • LL_RCC_PLLSOURCE_HSI
  • LL_RCC_PLLSOURCE_HSE
PLLMThis parameter can be one of the following values:

  • LL_RCC_PLLM_DIV_1
  • LL_RCC_PLLM_DIV_2
  • LL_RCC_PLLM_DIV_3
  • LL_RCC_PLLM_DIV_4
  • LL_RCC_PLLM_DIV_5
  • LL_RCC_PLLM_DIV_6
  • LL_RCC_PLLM_DIV_7
  • LL_RCC_PLLM_DIV_8
PLLNBetween 8 and 86
PLLRThis parameter can be one of the following values:

  • LL_RCC_PLLR_DIV_2
  • LL_RCC_PLLR_DIV_4
  • LL_RCC_PLLR_DIV_6
  • LL_RCC_PLLR_DIV_8
Return values:
None

Definition at line 2814 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_Disable ( void   )

Disable PLL.

Note:
Cannot be disabled if the PLL clock is used as the system clock CR PLLON LL_RCC_PLL_Disable
Return values:
None

Definition at line 2768 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_DisableDomain_48M ( void   )

Disable PLL output mapped on 48MHz domain clock.

Note:
Cannot be disabled if the PLL clock is used as the system clock
In order to save power, when the PLLCLK of the PLL is not used, should be 0 PLLCFGR PLLQEN LL_RCC_PLL_DisableDomain_48M
Return values:
None

Definition at line 3131 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_DisableDomain_SAI ( void   )

Disable PLL output mapped on SAI domain clock.

Note:
Cannot be disabled if the PLL clock is used as the system clock
In order to save power, when the PLLCLK of the PLL is not used, should be 0 PLLCFGR PLLPEN LL_RCC_PLL_DisableDomain_SAI
Return values:
None

Definition at line 3107 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_DisableDomain_SYS ( void   )

Disable PLL output mapped on SYSCLK domain.

Note:
Cannot be disabled if the PLL clock is used as the system clock
In order to save power, when the PLLCLK of the PLL is not used, Main PLL should be 0 PLLCFGR PLLREN LL_RCC_PLL_DisableDomain_SYS
Return values:
None

Definition at line 3155 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_Enable ( void   )

Enable PLL CR PLLON LL_RCC_PLL_Enable.

Return values:
None

Definition at line 2757 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_EnableDomain_48M ( void   )

Enable PLL output mapped on 48MHz domain clock PLLCFGR PLLQEN LL_RCC_PLL_EnableDomain_48M.

Return values:
None

Definition at line 3117 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_EnableDomain_SAI ( void   )

Enable PLL output mapped on SAI domain clock PLLCFGR PLLPEN LL_RCC_PLL_EnableDomain_SAI.

Return values:
None

Definition at line 3093 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE void LL_RCC_PLL_EnableDomain_SYS ( void   )

Enable PLL output mapped on SYSCLK domain PLLCFGR PLLREN LL_RCC_PLL_EnableDomain_SYS.

Return values:
None

Definition at line 3141 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE uint32_t LL_RCC_PLL_GetDivider ( void   )

Get Division factor for the main PLL and other PLL PLLCFGR PLLM LL_RCC_PLL_GetDivider.

Return values:
Returnedvalue can be one of the following values:

  • LL_RCC_PLLM_DIV_1
  • LL_RCC_PLLM_DIV_2
  • LL_RCC_PLLM_DIV_3
  • LL_RCC_PLLM_DIV_4
  • LL_RCC_PLLM_DIV_5
  • LL_RCC_PLLM_DIV_6
  • LL_RCC_PLLM_DIV_7
  • LL_RCC_PLLM_DIV_8

Definition at line 3083 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE uint32_t LL_RCC_PLL_GetMainSource ( void   )

Get the oscillator used as PLL clock source.

PLLCFGR PLLSRC LL_RCC_PLL_GetMainSource

Return values:
Returnedvalue can be one of the following values:

  • LL_RCC_PLLSOURCE_NONE
  • LL_RCC_PLLSOURCE_MSI
  • LL_RCC_PLLSOURCE_HSI
  • LL_RCC_PLLSOURCE_HSE

Definition at line 3065 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE uint32_t LL_RCC_PLL_GetN ( void   )

Get Main PLL multiplication factor for VCO PLLCFGR PLLN LL_RCC_PLL_GetN.

Return values:
Between8 and 86

Definition at line 2965 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE uint32_t LL_RCC_PLL_GetP ( void   )

Get Main PLL division factor for PLLP.

Note:
used for PLLSAI3CLK (SAI1 and SAI2 clock) PLLCFGR PLLPDIV LL_RCC_PLL_GetP
Return values:
Returnedvalue can be one of the following values:

  • LL_RCC_PLLP_DIV_2
  • LL_RCC_PLLP_DIV_3
  • LL_RCC_PLLP_DIV_4
  • LL_RCC_PLLP_DIV_5
  • LL_RCC_PLLP_DIV_6
  • LL_RCC_PLLP_DIV_7
  • LL_RCC_PLLP_DIV_8
  • LL_RCC_PLLP_DIV_9
  • LL_RCC_PLLP_DIV_10
  • LL_RCC_PLLP_DIV_11
  • LL_RCC_PLLP_DIV_12
  • LL_RCC_PLLP_DIV_13
  • LL_RCC_PLLP_DIV_14
  • LL_RCC_PLLP_DIV_15
  • LL_RCC_PLLP_DIV_16
  • LL_RCC_PLLP_DIV_17
  • LL_RCC_PLLP_DIV_18
  • LL_RCC_PLLP_DIV_19
  • LL_RCC_PLLP_DIV_20
  • LL_RCC_PLLP_DIV_21
  • LL_RCC_PLLP_DIV_22
  • LL_RCC_PLLP_DIV_23
  • LL_RCC_PLLP_DIV_24
  • LL_RCC_PLLP_DIV_25
  • LL_RCC_PLLP_DIV_26
  • LL_RCC_PLLP_DIV_27
  • LL_RCC_PLLP_DIV_28
  • LL_RCC_PLLP_DIV_29
  • LL_RCC_PLLP_DIV_30
  • LL_RCC_PLLP_DIV_31
Note:
used for PLLSAI3CLK (SAI1 and SAI2 clock) PLLCFGR PLLP LL_RCC_PLL_GetP
Return values:
Returnedvalue can be one of the following values:

  • LL_RCC_PLLP_DIV_7
  • LL_RCC_PLLP_DIV_17

Definition at line 3007 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE uint32_t LL_RCC_PLL_GetQ ( void   )

Get Main PLL division factor for PLLQ.

Note:
used for PLL48M1CLK selected for USB, RNG, SDMMC (48 MHz clock) PLLCFGR PLLQ LL_RCC_PLL_GetQ
Return values:
Returnedvalue can be one of the following values:

  • LL_RCC_PLLQ_DIV_2
  • LL_RCC_PLLQ_DIV_4
  • LL_RCC_PLLQ_DIV_6
  • LL_RCC_PLLQ_DIV_8

Definition at line 3036 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE uint32_t LL_RCC_PLL_GetR ( void   )

Get Main PLL division factor for PLLR.

Note:
used for PLLCLK (system clock) PLLCFGR PLLR LL_RCC_PLL_GetR
Return values:
Returnedvalue can be one of the following values:

  • LL_RCC_PLLR_DIV_2
  • LL_RCC_PLLR_DIV_4
  • LL_RCC_PLLR_DIV_6
  • LL_RCC_PLLR_DIV_8

Definition at line 3051 of file stm32l4xx_ll_rcc.h.

__STATIC_INLINE uint32_t LL_RCC_PLL_IsReady ( void   )

Check if PLL Ready CR PLLRDY LL_RCC_PLL_IsReady.

Return values:
Stateof bit (1 or 0).

Definition at line 2778 of file stm32l4xx_ll_rcc.h.

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