MC68HC08AZ32A Datasheet, PDF (198/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Serial Communications Interface (SCI)
15.5.3 Receiver
Figure 15-6 shows the structure of the SCI receiver.
INTERNAL BUS
SCP1
SCP0
÷4
CGMXCLK
PRE-
BAUD
SCALER DIVIDER
SCR1
SCR2
SCR0
÷ 16
RxD
DATA
RECOVERY
ALL ZEROS
BKF
RPF
SCI DATA REGISTER
11-BIT
RECEIVE SHIFT REGISTER
H8 7 6 5 4 3 2 1 0 L
M
WAKE
ILTY
PEN
PTY
WAKEUP
LOGIC
PARITY
CHECKING
IDLE
ILIE
SCRF
SCRIE
SCRF
IDLE
R8
ILIE
SCRIE
RWU
Technical Data
198
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
Figure 15-6. SCI Receiver Block Diagram
MC68HC08AZ32A — Rev 1.0
Serial Communications Interface (SCI)
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