MC68HC908GR16 Datasheet, PDF (162/310 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Enhanced Serial Communications Interface (ESCI) Module
INTERNAL BUS
ESCI DATA
REGISTER
RxD
RECEIVE
SHIFT REGISTER
ESCI DATA
REGISTER
RxD
SCI_TxD
TRANSMIT
SHIFT REGISTER
ARBITER- TxD
BUS CLOCK
CGMXCLK
LINR
SCTIE
TCIE
SCRIE
ILIE
TE
RE
RWU
SBK
SL
TXINV
BUS_CLK
R8
SL
T8
SCTE
TC
SCRF
IDLE
OR
NF
FE
PE
LOOPS
LOOPS
ENSCI
ORIE
NEIE
FEIE
PEIE
WAKEUP
CONTROL
RECEIVE
CONTROL
FLAG
CONTROL
TRANSMIT
CONTROL
BKF
ENSCI
RPF
÷4
PRE- BAUD RATE
SCALER GENERATOR
M
LINT
WAKE
ILTY
PEN
PTY
ACLK BIT IN SCIACTL
÷ 16
DATA SELECTION
CONTROL
SL=1 -> SCI_CLK = BUSCLK
SL=0 -> SCI_CLK = CGMXCLK (4x BUSCLK)
Figure 14-2. ESCI Module Block Diagram
Data Sheet
162
MC68HC908GR16 — Rev. 1.0
Enhanced Serial Communications Interface (ESCI) Module
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