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C515C
On-Chip Peripheral Components
Internal Bus
1
Write
to
SBUF
S
Q
&
SBUF
<_ 1
TXD
D
CLK
Zero Detector
Shift
Start
Data
TX Control
÷ 16
TX Clock
Baud
Rate
Clock
TI
Send
RI
Load
SBUF
<_ 1
Serial
Port
Interrupt
÷ 16
Sample
1-to-0
Transition
Detector
RX
Start
RX Control
1FFH Shift
Bit
Detector
Input Shift Register
(9Bits)
RXD
Shift
Load
SBUF
SBUF
Read
SBUF
Internal Bus
MCS02103
Figure 6-33 Serial Interface, Mode 1, Functional Diagram
User’s Manual
6-63
2000-11