Fujitsu FR81S User Manual
CHAPTER 40: MULTI-FUNCTION SERIAL INTERFACE
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : MULTI-FUNCTION SERIAL INTERFACE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
83
Bit name
Function
bit2 TBIE:
Transmission bus idle
interrupt enable bit
⋅
This bit enables or disables the output of transmission bus idle interrupt
request to the CPU.
⋅
When the TBIE bit and SSR:TBI bit are set to "1", a transmission bus
idle interrupt request will be output.
bit1 RXE:
Reception enable bit
This bit enables/disables the reception of LIN-interface (v2.1).
⋅
If this bit is set to "0", data frame reception is disabled.
⋅
If this bit is set to "1", data frame reception is enabled.
Notes:
⋅
Even when you enable reception (RXE=1), LIN-UART does not start the
reception until a falling edge of the start bit is input.
⋅
In the master operation mode, data will not be received even if receptions
are enabled (RXE=1) during LIN break field transmission.
⋅
If you disable reception (RXE=0) while a reception is in progress, it
immediately stops the reception.
bit0 TXE:
Transmission enable bit
This bit enables/disables the transmission of LIN-interface (v2.1).
⋅
If this bit is set to "0", data frame transmission is disabled.
⋅
If this bit is set to "1", data frame transmission is enabled.
Note:
⋅
If you disable transmission (TXE=0) while a transmission is in progress,
it immediately stops the transmission.
MB91520 Series
MN705-00010-1v0-E
1396