Serial Communications Interface Module (SCI)
Functional Description
13.3.2 Transmitter
Figure 13-5 shows the structure of the SCI transmitter.
INTERNAL BUS
PRE- BAUD
SCALER DIVIDER
÷ 16
÷ 4
SCI DATA REGISTER
SCP1
SCP0
SCR2
SCR1
SCR0
11-BIT
TRANSMIT
SHIFT REGISTER
H
8
7
6
5
4
3
2
1
0
L
PTF5/TxD
TXINV
M
PEN
PTY
PARITY
GENERATION
T8
TRANSMITTER CPU
INTERRUPT REQUEST
TRANSMITTER
CONTROL LOGIC
SCTE
SBK
SCTE
LOOPS
ENSCI
TE
SCTIE
SCTIE
TC
TC
TCIE
TCIE
Figure 13-5. SCI Transmitter
MC68HC908MR32 • MC68HC908MR16 — Rev. 6.0
MOTOROLA Serial Communications Interface Module (SCI)
Data Sheet
173
FREESCALE [ Freescale ]
