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Why USART Master mode max. baudrate is higher than slave mode

Question asked by Muralidhar M on Jan 2, 2018
Latest reply on Mar 8, 2018 by Carlos_Mendoza

Why USART Master mode max. baudrate is higher than slave mode max. baud rate??

Elaborately, I saw in every datasheet of LPC cortex-M controllers that, max. baud rate for USART in Synchronous master mode is higher (almost double) than USART in slave mode? Why that happened? Why USART can't give same max. speed in both master and slave modes? Is there any particular constraint? I wanted to know the reason because if I want to use same controller as USART master and slave I can't use max. baudrate of USART master becuase USART slave speed is low. So please explain the reason if anyone knows.

 

Thanks in advance.

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