Datasheet

Infrared Serial Communications Interface Module (IRSCI)
MC68HC908LJ12 — Rev. 2.1 Technical Data
Freescale Semiconductor Infrared Serial Communications Interface Module (IRSCI) 265
Use this formula to calculate the SCI baud rate:
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.
Table 13-8. SCI Baud Rate Selection
SCR2, SCR1, and SCR0 Baud Rate Divisor (BD)
000 1
001 2
010 4
011 8
100 16
101 32
110 64
111 128
baud rate
SCI clock source
16 PD BD××
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