M30622 Mitsubishi, M30622 Datasheet - Page 118

• Manufacturer Part Number: M30622
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

Serial I/O
Figure 1.19.6. Serial I/O-related registers (3)
Tentative Specifications REV.A
S
pecifications in this manual are tentative and subject to change.
UARTi transmit/receive control register 0
UART2 transmit/receive control register 0
b7
b7
b6
b6
b5
b5
b4
b4
b3
b3
b2
b2
b1
b1
b0
b0
Note 1: Set the corresponding port direction register to “0”.
Note 2: The settings of the corresponding port register and port direction register are invalid.
Note 1: Set the corresponding port direction register to “0”.
Note 2: The settings of the corresponding port register and port direction register are invalid.
Note 3: Only clock synchronous serial I/O mode and 8-bit UART mode are valid.
Note 4: In M30623(80-pin package), these bits are invalid, because CLK
Note 5: In M30623(80-pin package), do not use UART2 as clock synchronous serial I/O.
UFORM Transfer format select bit
UFORM Transfer format select bit
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be “0”.
symbol
CKPOL
symbol
TXEPT
CKPOL
TXEPT
CLK0
CLK1
CLK0
CLK1
CRS
CRD
CRS
CRD
NCH
Bit
Bit
UiC0(i=0,1)
Symbol
Symbol
no external pin.
U2C0
(Note 3)
CTS/RTS disable bit
CLK polarity select bit
CLK polarity select bit
BRG count source
select bit
CTS/RTS function
select bit
Transmit register empty
flag
Data output select bit
BRG count source
select bit
CTS/RTS function
select bit
Transmit register empty
flag
CTS/RTS disable bit
Bit name
Bit name
03A4
(Note 4)
(Note 4)
(Note 4)
Address
Address
037C
16
, 03AC
118
16
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : Data present in transmit
1 : No data present in transmit
0 : TXDi pin is CMOS output
1 : TXDi pin is N-channel
0 : Transmit data is output at
1 : Transmit data is output at
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
0 : Data present in transmit
1 : No data present in transmit
0 : TXDi pin is CMOS output
1 : TXDi pin is N-channel
0 : Transmit data is output at
1 : Transmit data is output at
b1 b0
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
0 : LSB first
1 : MSB first
b1 b0
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
0 : LSB first
1 : MSB first
(During clock synchronous
(During clock synchronous
register (during transmission)
register (transmission
completed)
register (during transmission)
register (transmission
completed)
16
(P6
programmable I/O port)
open-drain output
falling edge of transfer clock
and receive data is input at
rising edge
rising edge of transfer clock
and receive data is input at
falling edge
open-drain output
falling edge of transfer clock
and receive data is input at
rising edge
rising edge of transfer clock
and receive data is input at
falling edge
(P7
programmable I/O port)
1
8
32
1
8
32
0
3
serial I/O mode)
serial I/O mode)
When reset
is selected
is selected
When reset
is selected
is selected
and P6
functions
is selected
is selected
Function
Function
08
08
16
16
4
function as
(Note 5)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
b1 b0
Must always be “0”
0 : Data present in transmit register
1 : No data present in transmit
0: TXDi pin is CMOS output
1: TXDi pin is N-channel
Must always be “0”
0 : Data present in transmit register
1 : No data present in transmit
0: TXDi pin is CMOS output
1: TXDi pin is N-channel
Must always be “0”
0 : LSB first
1 : MSB first
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
b1 b0
0 0 : f
0 1 : f
1 0 : f
1 1 : Inhibited
Valid when bit 4 = “0”
0 : CTS function is selected (Note 1)
1 : RTS function is selected (Note 2)
0 : CTS/RTS function enabled
1 : CTS/RTS function disabled
open-drain output
open-drain output
(during transmission)
register (transmission completed)
(during transmission)
register (transmission completed)
(P6
programmable I/O port)
(P7
I/O port)
(During UART mode)
1
8
32
(During UART mode)
1
8
32
0
3
is selected
is selected
is selected
is selected
and P6
functions programmable
is selected
is selected
Function
Function
2
4
and CTS
function as
Mitsubishi microcomputers
M16C / 62T Group
2
/RTS
2
have
R
R
W
W