MC68HC908GR8A_07 Datasheet, PDF (136/260 Pages) Freescale Semiconductor, Inc – Microcontrollers

Serial Communications Interface (SCI) Module
SCIBDSRC
FROM
CONFIG2
CGMXCLK
BUS CLOCK
SL
X
SL = 0 => SCICLK = CGMXCLK
SL = 1 => SCICLK = BUS CLOCK
INTERNAL BUS
÷4
PRE- BAUD
SCALER DIVIDER
÷ 16
SCP1
SCP0
SCR2
SCR1
SCR0
TXINV
SCI DATA REGISTER
11-BIT
TRANSMIT
SHIFT REGISTER
H876543210L
M
PEN
PARITY
PTY
GENERATION
T8
TRANSMITTER CPU
INTERRUPT REQUEST
TRANSMITTER
CONTROL LOGIC
SCTE
SCTIE
TC
TCIE
SCTE
SCTIE
TC
TCIE
Figure 13-5. SCI Transmitter
SBK
LOOPS
ENSCI
TE
PTE0/TxD
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
136
Freescale Semiconductor