MC68HC908LJ24 Datasheet, PDF (283/464 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Infrared Serial Communications Interface Module (IRSCI)
I/O Registers
Table 13-8. SCI Baud Rate Selection
SCR2, SCR1, and SCR0
000
001
010
011
100
101
110
111
Baud Rate Divisor (BD)
1
2
4
8
16
32
64
128
Use this formula to calculate the SCI baud rate:
baud rate = ^{S-----C----I---c---l--o---c---k-----s---o---u---r--c---e--}
16 × PD × BD
where:
SCI clock source = f_BUS or CGMXCLK
(selected by CKS bit)
PD = prescaler divisor
BD = baud rate divisor
Table 13-9 shows the SCI baud rates that can be generated with a
4.9152-MHz bus clock when f_BUS is selected as SCI clock source.
MC68HC908LJ24/LK24 — Rev. 2
MOTOROLA
Infrared Serial Communications Interface Module (IRSCI)
For More Information On This Product,
Go to: www.freescale.com
Data Sheet
283