Serial Communications Interface Module (SCI)
Functional Description
INTERNAL BUS
SCR2
SCR1
SCR0
SCP1
SCP0
SCI DATA REGISTER
PRE- BAUD
SCALER DIVIDER
÷ 4
÷ 16
11-BIT
RECEIVE SHIFT REGISTER
fOP
DATA
RECOVERY
H
8
7
6
5
4
3
2
1
0
L
PTF4/RxD
ALL 0s
BKF
RPF
M
RWU
SCRF
IDLE
WAKE
ILTY
WAKEUP
LOGIC
PEN
PTY
R8
PARITY
CHECKING
IDLE
ILIE
ILIE
SCRF
SCRIE
SCRIE
OR
OR
ORIE
ORIE
NF
NF
NEIE
NEIE
FE
FE
FEIE
FEIE
PE
PE
PEIE
PEIE
Figure 13-6. SCI Receiver Block Diagram
MC68HC908MR32 • MC68HC908MR16 — Rev. 6.0
MOTOROLA Serial Communications Interface Module (SCI)
Data Sheet
177
FREESCALE [ Freescale ]
