C509-L_97 Datasheet, PDF (176/290 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C509-L
Internal Bus
1
Write
to
SxBUF
S
Q
SxBUF
&
D
Q
CLK
Zero Detector
÷ 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
MCS01833
Figure 6-43
Functional Diagram - Serial Interfaces 0 and 1, Mode 1 / Mode B
Semiconductor Group
6-98
1 TXDx
1997-10-01