PXD20RM Datasheet, PDF (196/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

For example, suppose system is transmitting at 125kbps. In this case, nominal bit period:
T=1/(125*10³)s =8*10^-3*10^-3s = 8  s
To achieve 8 samples per bit
Sample period= 8/8  s =1 s
BRP = 1 s/62.5ns = 16. Thus, in this case BRP = 01111.
Eqn. 7-1
PXD20 Microcontroller Reference Manual, Rev. 1
7-6
Freescale Semiconductor
Preliminary—Subject to Change Without Notice