Motorola MC68HC908AB32 - SCI Module Block Diagram

Serial Communications Interface Module (SCI)
Functional Description
MC68HC908AB32 — Rev. 1.0 Technical Data
MOTOROLA Serial Communications Interface Module (SCI) 243
Figure 15-1. SCI Module Block Diagram
SCTE
TC
SCRF
IDLE
OR
NF
FE
PE
SCTIE
TCIE
SCRIE
ILIE
TE
RE
RWU
SBK
R8
T8
R
ORIE
FEIE
PEIE
BKF
RPF
SCI DATA
RECEIVE
SHIFT REGISTER
SCI DATA
REGISTER
TRANSMIT
SHIFT REGISTER
NEIE
M
WAKE
ILTY
FLAG
CONTROL
TRANSMIT
CONTROL
RECEIVE
CONTROL
DATA SELECTION
CONTROL
WAKEUP
PTY
PEN
REGISTER
DMA
INTERRUPT
CONTROL
TRANSMITTER
INTERRUPT
CONTROL
RECEIVER
INTERRUPT
CONTROL
ERROR
INTERRUPT
CONTROL
CONTROL
R
ENSCI
LOOPS
ENSCI
PTE1/RxD PTE0/TxD
INTERNAL BUS
TXINV
LOOPS
÷ 4
÷ 16
PRE-
SCALER
BAUD
DIVIDER
CGMXCLK