s908qc16vdse Freescale Semiconductor, Inc, s908qc16vdse Datasheet - Page 125

• Manufacturer Part Number: s908qc16vdse
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

13.3 Functional Description
communication between the MCU and remote devices, including other MCUs. The transmitter and
receiver of the ESCI operate independently, although they use the same baud rate generator.
Freescale Semiconductor
shows the structure of the ESCI module. The ESCI allows full-duplex, asynchronous, NRZ serial
BUSCLKX4
SL = 1 -> SCI_CLK = BUSCLK
SL = 0 -> SCI_CLK = BUSCLKX4
CLOCK
BUS
PRESCALER
ENHANCED
RxD
SL
SCRIE
SCTIE
LINR
TCIE
RWU
SBK
ILIE
RE
TE
MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 4
SHIFT REGISTER
ESCI DATA
REGISTER
RECEIVE
÷ 4
CONTROL
WAKEUP
Figure 13-2. ESCI Module Block Diagram
SCTE
SCRF
SCALER
IDLE
ENSCI
TC
PRE-
GENERATOR
BAUD RATE
÷ 16
CONTROL
RECEIVE
INTERNAL BUS
LOOPS
BKF
RPF
DATA SELECTION
CONTROL
OR
NF
FE
PE
FLAG
CONTROL
WAKE
LOOPS
ILTY
PEN
PTY
ENSCI
M
TRANSMIT
CONTROL
SHIFT REGISTER
TXINV
ORIE
NEIE
FEIE
PEIE
REGISTER
ESCI DATA
TRANSMIT
R8
T8
LINT
Functional Description
BUS CLOCK
SCI_TxD
IN SCIACTL
ACLK BIT
RxD
SL
125
TxD