s908az32ag2cfue Freescale Semiconductor, Inc, s908az32ag2cfue Datasheet - Page 142

• Manufacturer Part Number: s908az32ag2cfue
• Description: M68hc08 Microcontrollers 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Serial Communications Interface (SCI)
16.4.1 Data Format
The SCI uses the standard non-return-to-zero mark/space data format illustrated in
16.4.2 Transmitter
Figure 16-4
142
shows the structure of the SCI transmitter.
SCR1
SCR2
SCR0
SCP1
SCP0
÷
4
START
START
BIT
BIT
SCALER
PRE-
BIT 0
BIT 0
DIVIDER
BIT 1
BIT 1
BAUD
PEN
PTY
TXINV
BIT 2
BIT 2
MC68HC908AZ32A Data Sheet, Rev. 2
Figure 16-3. SCI Data Formats
Figure 16-4. SCI Transmitter
÷
GENERATION
16
BIT 3
BIT 3
PARITY
(BIT M IN SCC1 CLEAR)
SCTE
SCTIE
TC
TCIE
8-BIT DATA FORMAT
9-BIT DATA FORMAT
(BIT M IN SCC1 SET)
T8
M
BIT 4
BIT 4
H
BIT 5
BIT 5
8
SCTIE
7
SCTE
TCIE
TC
BIT 6
BIT 6
SCI DATA REGISTER
6
SHIFT REGISTER
INTERNAL BUS
TRANSMIT
5
OR DATA
11-BIT
PARITY
BIT 7
BIT 7
BIT
4
CONTROL LOGIC
TRANSMITTER
3
OR DATA
PARITY
STOP
BIT 8
BIT
BIT
2
1
LOOPS
START
ENSCI
STOP
NEXT
SBK
BIT
BIT
TE
0
L
START
NEXT
BIT
Freescale Semiconductor
Figure
16-3.
TxD