Divisor = n + 0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875; where n is an integer between 2 and 16384 (2

^{14}).

**Note**: Divisor = 1 and Divisor = 0 are special cases. A divisor of 0 will give 3 MBaud, and a divisor of 1 will give 2 MBaud. Sub-integer divisors between 0 and 2 are not allowed.

Therefore the value of the divisor needed for a given Baud rate is found by dividing 3000000 by the required Baud rate.

The exact Baud rate may not be achievable - however as long as the actual Baud rate used is within +/-3% of the required Baud rate then the link should function without errors. When a Baud rate is passed to the driver where the exact divisor required is not achievable the closest possible Baud rate divisor will be used as long as that divisor gives a Baud rate which is within +/- 3% of the Baud rate originally set.

For example:

A non-standard Baud rate of 490000 Baud is required.

Required divisor = 3000000 / 490000 = 6.122

The closest achievable divisor is 6.125, which gives a baud rate of 489795.9, which is well within the allowed +/- 3% margin of error. Therefore 490000 can be passed to the driver and the device will communicate without errors.