MC908GR32AVFAE Datasheet, PDF (154/314 Pages) Freescale Semiconductor, Inc – Microcontrollers

Enhanced Serial Communications Interface (ESCI) Module
INTERNAL BUS
BUS
CLOCK
CGMXCLK
ESCI DATA
REGISTER
RxD
RECEIVE
SHIFT REGISTER
LINR
SCTIE
TCIE
SCRIE
ILIE
TE
RE
RWU
SBK
SCTE
TC
SCRF
IDLE
WAKEUP
CONTROL
ESCI DATA
REGISTER
RxD
SCI_TxD
TRANSMIT
TxD
SHIFT REGISTER
TXINV
BUS CLOCK
R8
SL
T8
ACLK BIT
IN SCIACTL
OR
NF
FE
PE
LOOPS
RECEIVE
CONTROL
FLAG
CONTROL
LOOPS
ENSCI
ORIE
NEIE
FEIE
PEIE
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 = CGMXCLK
Figure 13-3. ESCI Module Block Diagram
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
154
Freescale Semiconductor