PXS20RM Datasheet, PDF (1049/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

LIN Controller (LINFlexD)
DTIE
DTF
DBEIE
DBEF
HRIE
HRF
LSIE
States
WUIE
WUF
DBFIE
DBFF
DRIE
DRF
HRIE
HRF
Tx
Rx
BOIE
BOF
FEIE
FEF
HEIE
SFEF,SDEF,IDPEF
CEIE
CEF
BEIE
BEF
OCIE
OCF
Error
SZIE
SZF
TOIE
TO
Figure 31-56. Interrupt diagram
31.12.3 Fractional baud rate generation
The baud rates for the receiver and transmitter are both set to the same value as programmed in the
Mantissa (LINIBRR) and Fraction (LINFBRR) registers.
Tx/Rx baud =
f_{ipg_clock_lin}
(16 * LFDIV)
LFDIV is an unsigned fixed point number. The 20-bit mantissa is coded in the LINIBRR register and the
fraction is coded in the LINFBRR register.
The following examples show how to derive LFDIV from LINIBRR and LINFBRR register values:
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
31-73