UART_DEFAULT_CONFIG_BAUDRATE is defined as 30801920?

Question

In nRF5_SDK_15.0.0_a53641a code, there's such definition: 
 #define UART_DEFAULT_CONFIG_BAUDRATE 30801920 
 Which means about 30.8 Mbps. 
 
 But in page 345 of nRF52832's Product Specification V1.4, you can see the maxim speed of UARTE32 is 1 Mbps. 
 
 This don't make sense, What's the matter?

zzzh · Accepted Answer

I got it, by (nrf_uart_baudrate_t)NRF_LOG_BACKEND_UART_BAUDRATE, it's limited to 1 Mbps. 
 30801920, that's a good value, don't have to be changed for decades.

UART_DEFAULT_CONFIG_BAUDRATE is defined as 30801920?

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