mc9s08qg4 Freescale Semiconductor, Inc, mc9s08qg4 Datasheet - Page 197

• Manufacturer Part Number: mc9s08qg4
• Description: Hcs08 Microcontrollers Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

14.1.3
Figure 14-3
Freescale Semiconductor
RATE CLOCK
1 × BAUD
Block Diagram
shows the transmitter portion of the SCI.
INTERNAL BUS
PE
PT
M
BRK13
TXDIR
SBK
TE
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 4
Figure 14-3. SCI Transmitter Block Diagram
GENERATION
PARITY
T8
H
(WRITE-ONLY)
8
11-BIT TRANSMIT SHIFT REGISTER
7
6
SCID – Tx BUFFER
TRANSMIT CONTROL
SHIFT DIRECTION
5
(Figure 14-4
4
TDRE
TCIE
TIE
TC
3
2
Chapter 14 Serial Communications Interface (S08SCIV3)
1
0
shows the receiver portion of the SCI.)
L
LOOPS
RSRC
SCI CONTROLS TxD
TxD DIRECTION
CONTROL
LOOP
Tx INTERRUPT
REQUEST
TXINV
TO RECEIVE
DATA IN
TO TxD PIN
TO TxD
PIN LOGIC
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