Hi Patrick,

I read now the T89C51CC01 data sheet, but I assume, other CAN controllers work similiar.

The crystal was divided by the prescaler and then this clock was used to generate the bit time. Thus you need 2 integer values to divide the crystal.

14.7456 / 0.125 = 117.9
On rounding to 117 you can get two factors: 117 = 9 * 13.

So you can set the prescaler to 9 and the bit time quanta to 13, e.g.:
Tsyns = 1
Tprs = 6
Tphs1 = 3
Tphs2 = 3


This should work.
The error was 1- 117 / 117.9 = 0.8%


Peter