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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
S
SR0:000023
H
S
SR1:00002B
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