C509-L_97 Datasheet, PDF (180/290 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C509-L
Internal Bus
TB8x
Write
to
SxBUF
S
Q
SxBUF
D
Q
CLK
Zero Detector
&
<_ 1 TXDx
÷ 16
Baud
Rate
Clock
Sample
1-to-0
Transition
Detector
Start
TX Clock
Shift
Data
TX Control
Tlx ^Send
Serial
<_ 1
Port
Interrupt
÷ 16
RX Clock
Rlx Load
SxBUF
Start
RX Control
1FFH ^Shift
RXDx
Note: x means that 0 or 1 can
be inserted for interface
0 or interface 1, resp.
Bit
Detector
Input Shift Register
(9Bits)
Shift
Load
SxBUF
Read
SxBUF
SxBUF
Internal Bus
MCS01834
Figure 6-45
Functional Diagram - Serial Interfaces 0 and 1, Modes 2 and 3 / Mode A
Semiconductor Group
6-102
1997-10-01