MC68HC908GP32_08 Datasheet, PDF (138/266 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Serial Communications Interface Module (SCI)
INTERNAL BUS
SCIBDSRC
FROM
CONFIG2
SCP1
SCP0
CGMXCLK
SL
BUS CLOCK
X
÷4
SL = 0 => SCICLK = CGMXCLK
SL = 1 => SCICLK = BUS CLOCK
PRE- BAUD
SCALER DIVIDER
SCR2
SCR1
SCR0
÷ 16
PTE1/RxD
DATA
RECOVERY
ALL 0s
BKF
RPF
SCI DATA REGISTER
11-BIT
RECEIVE SHIFT REGISTER
H876543210L
ERROR CPU
INTERRUPT REQUEST
M
WAKE
ILTY
PEN
PTY
WAKEUP
LOGIC
PARITY
CHECKING
SCRF
IDLE
R8
RWU
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
Figure 13-5. SCI Receiver Block Diagram
MC68HC908GP32 Data Sheet, Rev. 10
138
Freescale Semiconductor