Uart/Sio Serial Mode Control Register 2 (Smc20) - Fujitsu F2MC-8FX Hardware Manual

CHAPTER 20 UART/SIO
20.5.2

UART/SIO Serial Mode Control Register 2 (SMC20)

UART/SIO serial mode control register 2 (SMC20) controls the UART/SIO operation
mode. The register is used to enable/disable serial clock output, serial data output,
transmission/reception, and interrupts and to clear the reception error flag.
UART/SIO Serial Mode Control Register 2 (SMC20)
Figure 20.5-3 UART/SIO Serial Mode Control Register 2 (SMC20)
Address
0057 SMC20
H
R/W
R1/W : Readable/writable (Read value is "1")
336
bit7 bit6 bit5 bit4
RXE
SCKE TOEXRERC
R/W R/W R1/W R/W
TEIE
0
Disables transmission data register empty interrupt
1
Enables transmission data register empty interrupt
TCIE
0
Disables transmission completion interrupt
1
Enables transmission completion interrupt
RIE
0
Disables reception interrupt
1
Enables reception interrupt
TXE
0
Disables transmission operation
1
Enables transmission operation
RXE
0
Disables reception operation
1
Enables reception operation
RERC
0
Clears each error flag
1
No change to this bit, no effect on others
TXOE
0
Disables serial data output (usable as port)
1
Enables serial data output
SCKE
0
Disables serial clock output (usable as port)
1
Enables serial clock output
: Readable/writable (Read value is the same as write value)
: Initial value
bit3 bit2 bit1 bit0
TXE RIE TCIE TEIE
R/W R/W R/W R/W
Transmission data register empty interrupt enable bit
Transmission completion interrupt enable bit
Reception interrupt enable bit
Transmission operation enable bit
Reception operation enable bit
Reception error flag clear bit
Serial data output enable bit
Serial clock output enable bit
Initial value
00100000
B