mc9s08sg4 Freescale Semiconductor, Inc, mc9s08sg4 Datasheet - Page 200

• Manufacturer Part Number: mc9s08sg4
• Description: 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Chapter 14 Serial Communications Interface (S08SCIV4)
14.1.3
Figure 14-2
200
RATE CLOCK
1 × BAUD
Block Diagram
shows the transmitter portion of the SCI.
INTERNAL BUS
PE
PT
M
BRK13
TXDIR
SBK
TE
GENERATION
Figure 14-2. SCI Transmitter Block Diagram
MC9S08SG8 MCU Series Data Sheet, Rev. 3
PARITY
T8
H
(WRITE-ONLY)
11-BIT TRANSMIT SHIFT REGISTER
8
7
SHIFT DIRECTION
6
SCID – Tx BUFFER
TRANSMIT CONTROL
5
4
TDRE
TCIE
TIE
TC
3
2
1
0
L
LOOPS
RSRC
SCI CONTROLS TxD
TxD DIRECTION
CONTROL
TXINV
LOOP
Tx INTERRUPT
REQUEST
Freescale Semiconductor
TO RECEIVE
DATA IN
TO TxD PIN
TO TxD
PIN LOGIC