deveopmen
Serial I/O
Preliminary Specifications REV.D
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M16C/80 (100-pin version) group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
129
Figure 1.16.9. Serial I/O-related registers (5)
UARTi transmit/receive control register 1
Symbol
UiC1(i=0,1)
Address
0365
16
,
036D
16
When reset
02
16
b7
b6
b5
b4
b3
b2
b1
b0
Bit name
Bit
symbol
W
R
Function
(During UART mode)
Function
(During clock synchronous
serial I/O mode)
TE
TI
RE
RI
Transmit enable bit
Receive enable bit
Receive complete flag
Transmit buffer
empty flag
0 : Transmission disabled
1 : Transmission enabled
0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
0 : Reception disabled
1 : Reception enabled
0 : Transmission disabled
1 : Transmission enabled
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 : No data present in
receive buffer register
1 : Data present in
receive buffer register
Nothing is assigned.
When write, set "0". When read, the value of these bits is “0”.
UARTi transmit/receive control register 1
Symbol
UiC1 (i=2 to 4)
Address
When reset
02
16
033D
16
, 032D
16
, 02FD
16
b7
b6
b5
b4
b3
b2
b1
b0
Bit name
Bit
symbol
W
R
Function
(During UART mode)
Function
(During clock synchronous
serial I/O mode)
TE
TI
RE
RI
Transmit enable bit
Receive enable bit
Receive complete flag
Transmit buffer
empty flag
0 : Transmission disabled
1 : Transmission enabled
0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
0 : Reception disabled
1 : Reception enabled
0 : Transmission disabled
1 : Transmission enabled
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 : No data present in
receive buffer register
1 : Data present in
receive buffer register
UiIRS
UARTi transmit interrupt
cause select bit
0 : Transmit buffer empty
(TI = 1)
1 : Transmit is completed
(TXEPT = 1)
0 : Transmit buffer empty
(TI = 1)
1 : Transmit is completed
(TXEPT = 1)
UiRRM
UARTi continuous
receive mode enable bit
0 : Continuous receive
mode disabled
1 : Continuous receive
mode enabled
Data logic select bit
0 : No reverse
1 : Reverse
0 : No reverse
1 : Reverse
UiLCH
UiERE
Error signal output
enable bit
Must be fixed to “0”
0 : Output disabled
1 : Output enabled
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
Must be fixed to “0”