參數(shù)資料
型號： M30201
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
文件頁數(shù)： 78/159頁
文件大?。?/td> 2319K
代理商： M30201
Serial I/O
78
Unde
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Figure 1.72. Serial I/O-related registers (2)
UARTi transmit/receive mode register
Symbol
UiMR(i=0,1)
Address
03A0
16
, 03A8
16
When reset
00
16
b7 b6
b5
b4
b3
b2
b1 b0
Bit name
Bit
symbol
W
R
Must be fixed to 001
0 0 0 : Serial I/O invalid
0 1 0 : Inhibited
0 1 1 : Inhibited
1 1 1 : Inhibited
CKDIR
SMD1
SMD0
Serial I/O mode select bit
(Note 1)
SMD2
Internal/external clock
select bit (Note 2)
STPS
PRY
PRYE
SLEP
Parity enable bit
0 : Internal clock
1 : External clock
Stop bit length select bit
Odd/even parity select bit
Sleep select bit
0 : One stop bit
1 : Two stop bits
0 : Parity disabled
1 : Parity enabled
0 : Sleep mode deselected
1 : Sleep mode selected
1 0 0 : Transfer data 7 bits long
1 0 1 : Transfer data 8 bits long
1 1 0 : Transfer data 9 bits long
0 0 0 : Serial I/O invalid
0 1 0 : Inhibited
0 1 1 : Inhibited
1 1 1 : Inhibited
b2 b1 b0
0 : Internal clock
1 : External clock
Invalid
Valid when bit 6 = “1”
0 : Odd parity
1 : Even parity
Invalid
Invalid
Must always be “0”
Function
(During UART mode)
Function
(During clock synchronous
serial I/O mode)
A
A
A
A
A
A
A
A
A
UARTi transmit/receive control register 0
b7
b6
b5
b4
b3
b2 b1
b0
1
0
Symbol
UiC0(i=0,1)
Address
03A4
16
, 03AC
16
When reset
08
16
Function
(During UART mode)
W
R
Function (Note)
(During clock synchronous
serial I/O mode)
TXEPT
CLK1
CLK0
NCH
CKPOL
BRG count source
select bit
Transmit register empty
flag
0 : Transmit data is output at
falling edge of transfer clock
and receive data is input at
rising edge
1 : Transmit data is output at
rising edge of transfer clock
and receive data is input at
falling edge
CLK polarity select bit
Data output select bit
0 0 : f
1
is selected
0 1 : f
8
is selected
1 0 : f
32
is selected
1 1 : fc is selected
0 : LSB first
1 : MSB first
0 : Data present in transmit
register (during transmission)
1 : No data present in transmit
register (transmission
completed)
0 : TXDi pin is CMOS output
1 : TXDi pin is N-channel
open-drain output
UFORM Transfer format select bit
1
is selected
0 1 : f
8
is selected
1 0 : f
32
is selected
1 1 : fc is selected
b1 b0
0 : Data present in transmit register
(during transmission)
1 : No data present in transmit
register (transmission completed)
0: TXDi pin is CMOS output
1: TXDi pin is N-channel
open-drain output
Must always be “0”
Bit name
Bit
symbol
Must always be “0”
Note: UART1 cannot be used in clock synchronous serial I/O.
AA
AA
AA
A
AA
AA
AA
AA
AA
Note 1: UART1 cannot be used in clock synchronous serial I/O.
Note 2: UART1 can use only internal clock. Must set this bit to “1”.
Set this bit to “0”.
Set this bit to “1”.
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