參數(shù)資料
型號： M30201M4T
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述： 單片16位CMOS微機(jī)
文件頁數(shù)： 79/159頁
文件大小： 2319K
代理商： M30201M4T
Unde
Serial I/O
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
79
Figure 1.73. Serial I/O-related registers (3)
UARTi transmit/receive control register 1
Symbol
UiC1(i=0,1)
Address
03A5
16
,
03AD
16
When reset
02
16
b7
b6
b5
b4
b3 b2
b1
b0
Bit name
Bit
symbol
Function
(During UART mode)
Function (Note 1)
(During clock synchronous
serial I/O mode)
TE
TI
RE
RI
Transmit enable bit
Receive enable bit
(Note 2)
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”.
Note 1: UART1 cannot be used in clock synchronous serial I/O.
Note 2: When using multiple pins to output the transfer clock, the following requirements must be met:
UART0 internal/external clock select bit (bit 3 at address 03A0
16
) = “0”.
UART transmit/receive control register 2
Symbol
UCON
Address
03B0
16
When reset
XX000000
2
b7
b6
b5 b4
b3
b2
b1
b0
Bit
name
Bit
symbol
Function
(During UART mode)
Function
(During clock synchronous
serial I/O mode)
0 :
Transmit buffer empty
(Tl = 1)
1 : Transmission completed
(TXEPT = 1)
CLKMD0
CLKMD1
UART0 transmit
interrupt cause select bit
UART0 continuous
receive mode enable bit
0 : Continuous receive
mode disabled
1 : Continuous receive
mode enable
Set this bit to “0”.
CLK/CLKS select bit 0
UART1 transmit
interrupt cause select bit
0 : Normal mode
(CLK output is CLK0 only)
1 : Transfer clock output
from multiple pins
function selected
Nothing is assigned.
When write, set "0". When read, its content is indeterminate.
0 : Transmit buffer empty
(Tl = 1)
1 : Transmission completed
(TXEPT = 1)
0 : Transmit buffer empty
(Tl = 1)
1 : Transmission completed
(TXEPT = 1)
Must always be “0”
U0IRS
U1IRS
U0RRM
Invalid
Invalid
CLK/CLKS select
bit 1 (Note 2)
Valid when bit 5 = “1”
0 : Clock output to CLK1
1 : Clock output to CLKS1
Note 1: UART1 cannot be used in clock synchronous serial I/O.
Note 2: If you are using clock asynchronous serial I/O mode, you can enable 'receive enable bit' when
RxD port input is “H”. If RxD port input is “L” and you have enabled 'receive enable bit' , then
receive operation starts immediately.
W
R
A
AA
A
W
R
A
AA
AA
A
AA
AA
AA
AA
Set this bit to “0”.
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