MC68908GZ8MFJE Datasheet, PDF (184/314 Pages) Freescale Semiconductor, Inc – Microcontrollers

Enhanced Serial Communications Interface (ESCI) Module
INTERNAL BUS
BUS
CLOCK
CGMXCLK
ESCI DATA
REGISTER
RxD
RECEIVE
SHIFT REGISTER
ESCI DATA
REGISTER
RxD
SCI_TxD
TRANSMIT
TxD
SHIFT REGISTER
LINR
SCTIE
TCIE
SCRIE
ILIE
TE
RE
RWU
SBK
SCTE
TC
SCRF
IDLE
WAKEUP
CONTROL
TXINV
R8
T8
BUS_CLK
SL
ACLK BIT
IN SCIACTL
OR
NF
FE
PE
LOOPS
LOOPS
ENSCI
ORIE
NEIE
FEIE
PEIE
RECEIVE
CONTROL
FLAG
CONTROL
TRANSMIT
CONTROL
BKF
ENSCI
ENHANCED
RPF
PRESCALER
SL
÷4
PRE- BAUD RATE
SCALER GENERATOR
M
LINT
WAKE
ILTY
PEN
PTY
÷ 16
DATA SELECTION
CONTROL
SL = 1 -> SCI_CLK = BUSCLK
SL = 0 -> SCI_CLK = CGMSCLK (4x BUSCLK)
Figure 15-2. ESCI Module Block Diagram
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
184
Freescale Semiconductor