configuration register 1
| MEM_MODE | Memory mapping selection bits |
| USB_IT_RMP | USB interrupt remap |
| TIM1_ITR_RMP | Timer 1 ITR3 selection |
| DAC_TRIG_RMP | DAC trigger remap (when TSEL = 001) |
| ADC24_DMA_RMP | ADC24 DMA remapping bit |
| TIM16_DMA_RMP | TIM16 DMA request remapping bit |
| TIM17_DMA_RMP | TIM17 DMA request remapping bit |
| TIM6_DAC1_DMA_RMP | TIM6 and DAC1 DMA request remapping bit |
| TIM7_DAC2_DMA_RMP | TIM7 and DAC2 DMA request remapping bit |
| I2C_PB6_FM | Fast Mode Plus (FM+) driving capability activation bits. |
| I2C_PB7_FM | Fast Mode Plus (FM+) driving capability activation bits. |
| I2C_PB8_FM | Fast Mode Plus (FM+) driving capability activation bits. |
| I2C_PB9_FM | Fast Mode Plus (FM+) driving capability activation bits. |
| I2C1_FM | I2C1 Fast Mode Plus |
| I2C2_FM | I2C2 Fast Mode Plus |
| ENCODER_MODE | Encoder mode |
| FPU_IT | Interrupt enable bits from FPU |