peripheral clock configuration regsiter 0
| TIMERS_CLK_EN | Set 1 to enable TIMERS clock |
| SPI01_CLK_EN | Set 1 to enable SPI01 clock |
| UART_CLK_EN | Set 1 to enable UART clock |
| WDG_CLK_EN | Set 1 to enable WDG clock |
| I2S0_CLK_EN | Set 1 to enable I2S0 clock |
| UART1_CLK_EN | Set 1 to enable UART1 clock |
| SPI2_CLK_EN | Set 1 to enable SPI2 clock |
| I2C_EXT0_CLK_EN | Set 1 to enable I2C_EXT0 clock |
| UHCI0_CLK_EN | Set 1 to enable UHCI0 clock |
| RMT_CLK_EN | Set 1 to enable RMT clock |
| PCNT_CLK_EN | Set 1 to enable PCNT clock |
| LEDC_CLK_EN | Set 1 to enable LEDC clock |
| UHCI1_CLK_EN | Set 1 to enable UHCI1 clock |
| TIMERGROUP_CLK_EN | Set 1 to enable TIMERGROUP clock |
| EFUSE_CLK_EN | Set 1 to enable EFUSE clock |
| TIMERGROUP1_CLK_EN | Set 1 to enable TIMERGROUP1 clock |
| SPI3_CLK_EN | Set 1 to enable SPI3 clock |
| PWM0_CLK_EN | Set 1 to enable PWM0 clock |
| I2C_EXT1_CLK_EN | Set 1 to enable I2C_EXT1 clock |
| TWAI_CLK_EN | Set 1 to enable CAN clock |
| PWM1_CLK_EN | Set 1 to enable PWM1 clock |
| I2S1_CLK_EN | Set 1 to enable I2S1 clock |
| SPI2_DMA_CLK_EN | Set 1 to enable SPI2_DMA clock |
| USB_CLK_EN | Set 1 to enable USB clock |
| UART_MEM_CLK_EN | Set 1 to enable UART_MEM clock |
| PWM2_CLK_EN | Set 1 to enable PWM2 clock |
| PWM3_CLK_EN | Set 1 to enable PWM3 clock |
| SPI3_DMA_CLK_EN | Set 1 to enable SPI4 clock |
| APB_SARADC_CLK_EN | Set 1 to enable APB_SARADC clock |
| SYSTIMER_CLK_EN | Set 1 to enable SYSTEMTIMER clock |
| ADC2_ARB_CLK_EN | Set 1 to enable ADC2_ARB clock |
| SPI4_CLK_EN | Set 1 to enable SPI4 clock |