MC908GR16ACFA FREESCALE [Freescale Semiconductor, Inc], MC908GR16ACFA Datasheet - Page 147

• Manufacturer Part Number: MC908GR16ACFA
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

14.4.1 Data Format
The SCI uses the standard non-return-to-zero mark/space data format illustrated in
14.4.2 Transmitter
Figure 14-5
The baud rate clock source for the ESCI can be selected via the configuration bit, ESCIBDSRC.
Freescale Semiconductor
PSSB4
PSSB3
PSSB2
PSSB1
PSSB0
PDS2
PDS1
PDS0
shows the structure of the SCI transmitter and the registers are summarized in
SCP1
SCP0
SCR2
SCR1
SCR0
÷
4
START
START
BIT
BIT
SCALER
PRE-
BIT 0
BIT 0
BIT 1
BIT 1
DIVIDER
BAUD
PEN
PTY
TXINV
BIT 2
BIT 2
MC68HC908GR16A Data Sheet, Rev. 1.0
Figure 14-4. SCI Data Formats
Figure 14-5. ESCI Transmitter
÷
GENERATION
BIT 3
BIT 3
16
PARITY
(BIT M IN SCC1 CLEAR)
SCTE
SCTIE
TC
TCIE
9-BIT DATA FORMAT
(BIT M IN SCC1 SET)
8-BIT DATA FORMAT
T8
M
BIT 4
BIT 4
H
BIT 5
BIT 5
8
SCTIE
7
SCTE
TCIE
TC
BIT 6
BIT 6
ESCI DATA REGISTER
6
SHIFT REGISTER
INTERNAL BUS
TRANSMIT
5
OR DATA
PARITY
11-BIT
BIT 7
BIT 7
BIT
4
CONTROL LOGIC
TRANSMITTER
3
OR DATA
PARITY
STOP
BIT 8
BIT
BIT
2
1
START
LOOPS
NEXT
STOP
ENSCI
BIT
BIT
LINT
SBK
TE
0
L
START
NEXT
BIT
Functional Description
Figure
14-4.
Figure
SCI_TxD
14-3.
147