CONFIG_MCG_FCRDIV

Fast internal reference clock divider

Type: int

Help

Selects the amount to divide down the fast internal reference clock. The resulting frequency must be in the range 31.25 kHz to 4 MHz.

Direct dependencies

BOARD_FRDM_K22F || BOARD_FRDM_K64F || BOARD_FRDM_K82F || BOARD_FRDM_KL25Z || BOARD_FRDM_KW41Z || BOARD_HEXIWEAR_K64 || BOARD_HEXIWEAR_KW40Z || BOARD_IP_K66F || BOARD_TWR_KV58F220M || BOARD_USB_KW24D512 || (HAS_MCG && SOC_FAMILY_KINETIS)

(Includes any dependencies from ifs and menus.)

Defaults

• 0

• 1

• 1

• 0

• 0

• 1

• 0

• 1

• 1

• 2

• 1

Kconfig definitions

At <Zephyr>/boards/arm/frdm_k22f/Kconfig.defconfig:20

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 0
    depends on BOARD_FRDM_K22F

---

At <Zephyr>/boards/arm/frdm_k64f/Kconfig.defconfig:20

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 1
    depends on BOARD_FRDM_K64F

---

At <Zephyr>/boards/arm/frdm_k82f/Kconfig.defconfig:20

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 1
    depends on BOARD_FRDM_K82F

---

At <Zephyr>/boards/arm/frdm_kl25z/Kconfig.defconfig:23

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 0
    depends on BOARD_FRDM_KL25Z

---

At <Zephyr>/boards/arm/frdm_kw41z/Kconfig.defconfig:17

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 0
    depends on BOARD_FRDM_KW41Z

---

At <Zephyr>/boards/arm/hexiwear_k64/Kconfig.defconfig:20

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 1
    depends on BOARD_HEXIWEAR_K64

---

At <Zephyr>/boards/arm/hexiwear_kw40z/Kconfig.defconfig:17

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 0
    depends on BOARD_HEXIWEAR_KW40Z

---

At <Zephyr>/boards/arm/ip_k66f/Kconfig.defconfig:20

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 1
    depends on BOARD_IP_K66F

---

At <Zephyr>/boards/arm/twr_kv58f220m/Kconfig.defconfig:20

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

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config MCG_FCRDIV
    int
    default 1
    depends on BOARD_TWR_KV58F220M

---

At <Zephyr>/boards/arm/usb_kw24d512/Kconfig.defconfig:24

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config MCG_FCRDIV
    int
    default 2
    depends on BOARD_USB_KW24D512

---

At <Zephyr>/soc/arm/nxp_kinetis/Kconfig:86

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:28 → <Zephyr>/soc/Kconfig:11 → <BuildDir>/Kconfig/Kconfig.soc.arch:2

Menu path: (Top) → Hardware Configuration

config MCG_FCRDIV
    int "Fast internal reference clock divider"
    range 0 7
    default 1
    depends on HAS_MCG && SOC_FAMILY_KINETIS
    help
      Selects the amount to divide down the fast internal reference clock. The
      resulting frequency must be in the range 31.25 kHz to 4 MHz.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)