PA7_FMP=B_0x0, PB3_FMP=B_0x0, ANASWVDD=B_0x0, BOOSTEN=B_0x0, PA15_FMP=B_0x0, PA6_FMP=B_0x0
SYSCFG configuration register 1
| BOOSTEN | I/O analog switch voltage booster enable Access can be protected by GTZC_TZSC ADC4SEC. Note: Refer to Table121 for setting. 0 (B_0x0): I/O analog switches are supplied by VsubDDA/sub voltage. 1 (B_0x1): I/O analog switches are supplied by a dedicated voltage booster (supplied by VsubDD/sub). |
| ANASWVDD | GPIO analog switch control voltage selection Access can be protected by GTZC_TZSC ADC4SEC. Note: Refer to Table121 for setting. 0 (B_0x0): I/O analog switches are supplied by VsubDDA/sub or booster when booster is ON. 1 (B_0x1): I/O analog switches are supplied by VsubDD/sub. |
| PA6_FMP | Fast-mode Plus drive capability activation on PA6 This bit can be read and written only with secure access if PA6 is secure in GPIOA. This bit enables the Fast-mode Plus drive mode for PA6 when PA6 is not used by I2C peripheral. This can be used to dive a LED for instance. Access can be protected by GPIOA SEC6. 0 (B_0x0): PA6 pin operates in standard mode when not used by I2C peripheral 1 (B_0x1): Fast-mode Plus mode is enabled on PA6 pin and the GPIO speed control is bypassed. |
| PA7_FMP | Fast-mode Plus drive capability activation on PA7 This bit can be read and written only with secure access if PA7 is secure in GPIOA. This bit enables the Fast-mode Plus drive mode for PA7 when PA7 is not used by I2C peripheral. This can be used to dive a LED for instance. Access can be protected by GPIOA SEC7. 0 (B_0x0): PA7 pin operates in standard mode when not used by I2C peripheral 1 (B_0x1): Fast-mode Plus mode is enabled on PA7 pin and the GPIO speed control is bypassed. |
| PA15_FMP | Fast-mode Plus drive capability activation on PA15 This bit can be read and written only with secure access if PA15 is secure in GPIOA. This bit enables the Fast-mode Plus drive mode for PA15 when PA15 is not used by I2C peripheral. This can be used to dive a LED for instance. Access can be protected by GPIOA SEC15. 0 (B_0x0): PA15 pin operates in standard mode when not used by I2C peripheral 1 (B_0x1): Fast-mode Plus mode is enabled on PA15 pin and the GPIO speed control is bypassed. |
| PB3_FMP | Fast-mode Plus drive capability activation on PB3 This bit can be read and written only with secure access if PB3 is secure in GPIOB. This bit enables the Fast-mode Plus drive mode for PB3 when PB3 is not used by I2C peripheral. This can be used to dive a LED for instance. Access can be protected by GPIOB SEC3. 0 (B_0x0): PB3 pin operates in standard mode when not used by I2C peripheral 1 (B_0x1): Fast-mode Plus mode is enabled on PAB3 pin and the GPIO speed control is bypassed. |