![]() ![]() The most common baud rates used are:Ģ) So if I were to send out a data stream higher than 9600Hz, I would be better off using a baud rate higher than 9600 to avoid data corruption? I feel there's more to it than just that.ģ) if we use USART with a clock, isn't data sampled at each clock pulse (rising/falling etc)? If you've got a 16MHz MCU clock, meaning you're putting out clock pulses every 62.5ns, and if you were to use a baud rate of 9600 for data, how do 104us and 62.5ns work out? Or as long as I'm using a faster clock than the TX data speed, I'm good cause MCU is capable of sending as fast as the clock?Ĥ) What's the essence of oversampling (8,16) of the data on the RX side? if the baud rates are the same on both TX and RX, the data received is at the same speed as it's being sent. ![]() The shaded boxes indicate the use of divisors not supported by the FT8U232AM device.1) How do you determine the baud rate that you want for your application while considering the clock of the MCU?īaud rate = number of bits / second. ![]() The blue boxes indicate special cases for the divisor values. The following table provides an indication of the possible Baud rates. This document is also relevant to FT2232C and FT8U232AM devices and also contains information on aliasing Baud rates for VCP drivers. Note that the FT8U232AM device will only support Sub-Integer Divisors of 0, 0.125, 0.25 and 0.5.įor a full description of achieveable Baud rates, please refer to the application note Configuring FT232BM Baud Rates on the Application Notes page of the FTDI website. Where the Integer Divisor is any integer between 4 and the Sub-Integer Divisor can be any one of 0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75 or 0.875. Integer Divisor + Sub-Integer Divisor = 3000000/Baud Rate When using the FT_SetDivisor, the Baud rate divisor must be calculated using the following formula: If using the FT_SetBaudRate function, the driver will select the nearest achieveable Baud rate to the one requested. This can be set or adjusted by setting a Baud rate divisor using the FT_SetDivisor function, or by setting the Baud rate directly with the FT_SetBaudRate function when using D2XX drivers. The maximum Baud rate achieveable with FTDI's current devices is 3M Baud. ![]()
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