M16C6K9 Datasheet, PDF (104/292 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6K9 Group
Serial I/O
UARTi transmit/receive control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
UiC1(i=0,1)
Address
When reset
03A516,03AD16
0216
Bit
symbol
Bit name
Function
(During clock synchronous
serial I/O mode)
Function
(During UART mode)
TE
Transmit enable bit
0 : Transmission disabled 0 : Transmission disabled
1 : Transmission enabled 1 : Transmission enabled
TI
Transmit buffer empty flag 0 : Data present in
0 : Data present in
transmit buffer register
transmit buffer register
1 : No data present in
1 : No data present in
transmit buffer register
transmit buffer register
RE Receive enable bit
0 : Reception disabled
1 : Reception enabled
0 : Reception disabled
1 : Reception enabled
RI
Receive complete flag 0 : No data present in
0 : No data present in
receive buffer register
receive buffer register
1 : Data present in
1 : Data present in
receive buffer register
receive buffer register
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
RW
UART2 transmit/receive control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
U2C1
Address
037D16
When reset
0216
Bit
symbol
Bit name
Function
(During clock synchronous
serial I/O mode)
Function
(During UART mode)
TE Transmit enable bit
0 : Transmission disabled 0 : Transmission disabled
1 : Transmission enabled 1 : Transmission enabled
TI Transmit buffer empty flag 0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
RE Receive enable bit
0 : Reception disabled
1 : Reception enabled
RI Receive complete flag
0 : No data present in
receive buffer register
1 : Data present in
receive buffer register
U2IRS
UART2 transmit interrupt
factor selection bit
0 : Transmit buffer empty
(TI = 1)
1 : Transmit is completed
(TXEPT = 1)
0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
0 : Reception disabled
1 : Reception enabled
0 : No data present in
receive buffer register
1 : Data present in
receive buffer register
0 : Transmit buffer empty
(TI = 1)
1 : Transmit is completed
(TXEPT = 1)
U2RRM UART2 continuous
receive mode enable bit
0 : Continuous receive
mode disabled
1 : Continuous receive
mode enabled
Invalid
U2LCH Data logic selection bit
0 : Not reverse
1 : Reverse
0 : Not reverse
1 : Reverse
U2ERE Error signal output
enable bit
Must be fixed to “0”
0 : Output disabled
1 : Output enabled
RW
Fig.GA-7 Serial I/O-related registers (4)
Rev.1.00 Jun 06, 2003 page 104 of 290