2 lin-uart serial mode register (smr), Lin-uart serial mode register (smr) – FUJITSU F2MCTM-16LX User Manual
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CHAPTER 20 LIN-UART
20.4.2
LIN-UART Serial Mode Register (SMR)
This register selects an operation mode and baud rate clock and specifies whether to
enable output of serial data and clocks to the corresponding pin.
■
LIN-UART Serial Mode Register (SMR)
Figure 20.4-3 Configuration of the Serial Mode Register (SMR)
MD1 MD0 OTO EXT REST UPCL SCKE SOE
bit7
R/W R/W R/W R/W W W R/W R/W
00000000
B
SMR0:000020
H
SMR1:000028
H
bit0
bit1
bit2
bit3
bit4
bit6 bit5
bit15
bit8
R/W
: Read/Write
W
: Write only
: Initial value
bit0
SOE
Serial data output enable bit of LIN-UART
0
General-purpose I/O port
1
Serial data output enable pin of LIN-UART
bit1
SCKE
LIN-UART serial clock output enable bit
0
General-purpose I/O port or LIN-UART clock
input pin
1
Serial clock output pin of LIN-UART
bit2
UPCL
LIN-UART programmable clear bit
write
read
0
Ignored
always
read 0
1
Reset LIN-UART
bit3
REST
Restart dedicated Reload Counter bit
write
read
0
Ignored
always
read 0
1
Restart Counter
bit4
EXT
External Serial Clock Source select bit
0
Use internal Baud Rate Generator (Reload
Counter)
1
Use external Serial Clock Source
bit5
OTO
One-to-one external clock Input enable bit
0
Use external Clock with Baud Rate Generator
(Reload Counter)
1
Use external Clock as it is
bit7
bit6
MD1
MD0
Operation Mode Setting bit
0
0
Mode 0: Asynchronous normal
0
1
Mode 1: Asynchronous Multiprocessor
1
0
Mode 2: Synchronous
1
1
Mode 3: Asynchronous LIN
Initial value
Address