3 serial status register (ssr), Serial status register (ssr) – FUJITSU F2MCTM-16LX User Manual
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CHAPTER 20 LIN-UART
20.4.3
Serial Status Register (SSR)
This register checks the transmission and reception status and error status, and
enables and disables the transmission and reception interrupts.
■
Serial Status Register (SSR)
Figure 20.4-4 Configuration of the Serial Status Register (SSR)
PE ORE FRE RDRF TDRE BDS RIE TIE
bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8
R R R R R R/W R/W R/W
00001000
B
SSR0:000023
H
SSR1:00002B
H
bit7
bit0
R/W
: Read/Write
R
: Read only
: Initial value
bit8
TIE
Transmission interrupt request enable bit
0
Disables transmission interrupt
1
Enables transmission interrupt
bit9
RIE
Reception interrupt request enable bit
0
Disables reception interrupt
1
Enables reception interrupt
bit10
BDS
Transfer direction selection bit
0
LSB first (transfer from lowest bit)
1
MSB first (transfer from highest bit)
bit11
TDRE
Transmission data empty flag bit
0
Transmission data register is full.
1
Transmission data register is empty.
bit12
RDRF
Reception data full flag bit
0
Reception data register is empty
1
Reception data register is full
bit13
FRE
Framing error flag bit
0
No framing error occurred
1
A framing error occurred
bit14
ORE
Overrun error flag bit
0
No overrun error occurred
1
An overrun error occurred
bit15
PE
Parity error flag bit
0
No parity error occurred
1
A parity error occurred
Initial value
Address