Table of Contents
Advertisement
CHAPTER 20 UART2, UART3
20.4.2
Serial Mode Register (SMR2/SMR3)
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.
■ Serial Mode Register (SMR2/SMR3)
Figure 20.4-3 Configuration of the Serial Mode Register (SMR2/SMR3)
bit
Address:
SMR3: 003518
H
SMR2: 0035D8
H
R/W
:
Readable and writable
W
:
Write only
:
Initial value
352
7
6
5
4
3
2
R/W R/W R/W R/W
W
W
Initial value
1
0
0 0 0 0 0 0 0 0
B
R/W R/W
bit0
SOE
Serial data output enable bit of LIN-UART
0
General purpose I/O port
1
LIN-UART serial data output pin
bit1
SCKE
Serial clock output enable bit of LIN-UART
0
General purpose I/O port or LIN-UART clock input pin
1
Serial clock output pin of LIN-UART
bit2
LIN-UART programmable clear (Software Reset)
UPCL
0
ignored
1
Reset UART
bit3
REST
0
ignored
1
Restart Counter
bit4
EXT
0
Use internal Baud Rate Generator (Reload Counter)
1
Use external Serial Clock Source
bit5
OTO
0
Use ext. Clock with Baud Rate Generator (Reload C.)
1
Use external Clock as is
bit7
bit6
MD1
MD0
0
0
0
1
1
0
1
1
write
read
always "0"
Restart dedicated Reload Counter
write
read
always "0"
External Serial Clock Source enable
One-to-one external clock Input enable
Operation Mode Setting
Mode 0: Asynchronous normal
Mode 1: Asynchronous Multiprocessor
Mode 2: Synchronous
Mode 3: Asynchronous LIN
Advertisement
Table of Contents
