uPD72105 (CSMA LAN Controller)

What is the margin for RxD input baud rate error?

This margin is expressed with the following expression.

Margin = ± [(BR-1) / 2] / (2 x BR)

[ ]: Integer (fractions rounded off)
BR: Baud rate setting value (INIT command parameter)

For example, when BR = 10 (40 MHz), the margin is 20%.
However, this is a theoretical formula and the actual performance may be somewhat lower.