mc68hc908gr8vp Freescale Semiconductor, Inc, mc68hc908gr8vp Datasheet - Page 165

• Manufacturer Part Number: mc68hc908gr8vp
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

18.4.2 Transmitter
Figure 18-4
The baud rate clock source for the SCI can be selected via the configuration bit, SCIBDSRC.
Freescale Semiconductor
CGMXCLK
IT12
SL = 0 => X = A
SL = 1 => X = B
shows the structure of the SCI transmitter.
SCIBDSRC
CONFIG2
A
B
FROM
SL
X
SCR1
SCR2
SCR0
SCP1
SCP0
÷ 4
SCALER
PRE-
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
DIVIDER
BAUD
PEN
PTY
TXINV
Figure 18-4. SCI Transmitter
÷ 16
GENERATION
PARITY
DMATE
DMATE
SCTIE
SCTE
DMATE
SCTE
SCTIE
TC
TCIE
T8
M
H
8
SCTIE
7
SCTE
TCIE
TC
SCI DATA REGISTER
6
SHIFT REGISTER
INTERNAL BUS
TRANSMIT
5
11-BIT
CONTROL LOGIC
4
TRANSMITTER
3
2
1
LOOPS
ENSCI
SBK
TE
0
L
Functional Description
PE2/TxD
165