MC68HC08AZ32 Datasheet, PDF (174/424 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
Serial Communications Interface Module (SCI)
Receiver
Figure 3 shows the structure of the SCI receiver.
INTERNAL BUS
SCP1
SCP0
÷4
CGMXCLK
PRE- BAUD
SCALER DIVIDER
SCR1
SCR2
SCR0
÷ 16
PTE1/RxD
DATA
RECOVERY
BKF
RPF
ALL ZEROS
SCI DATA REGISTER
11-BIT
RECEIVE SHIFT REGISTER
H8 7 6 5 4 3 2 1 0 L
M
WAKE
ILTY
PEN
PTY
WAKE-UP
LOGIC
PARITY
CHECKING
IDLE
ILIE
R
SCRF
SCRIE
R
SCRF
SCRIE
R
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
SCRF
IDLE
R8
ILIE
SCRIE
R
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
Figure 3. SCI receiver block diagram
RWU
MC68HC08AZ32
172
Serial Communications Interface Module (SCI)
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MOTOROLA