2 lin-uart serial mode register (smr), Lin-uart serial mode register (smr) – FUJITSU F2MCTM-16LX User Manual

Page 411

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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

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