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UART0 transmit/receive mode register (Address 30
UART1 transmit/receive mode register (Address 38
b7
1
UART0 transmit/receive control register 0 (Address 34
UART1 transmit/receive control register 0 (Address 3C
b7
0
Fig. 7.4.3 Initial setting example for relevant registers when transmitting
7.4 Clock asynchronous serial I/O (UART) mode
)
16
)
16
b0
b2 b1 b0
1 0 0: UART mode (7 bits)
1 0 1: UART mode (8 bits)
1 1 0: UART mode (9 bits)
Internal/External clock select bit
0: Internal clock
1: External clock
Stop bit length select bit
0: 1 stop bit
1: 2 stop bits
Odd/Even parity select bit
0: Odd parity
1: Even parity
Parity enable bit
0: Parity disabled
1: Parity enabled
Sleep select bit
0: Sleep mode cleared (ignored)
1: Sleep mode selected
)
16
)
16
b0
BRG count source select bits
b1 b0
0 0: f
/f
2
4
0 1: f
/f
16
32
1 0: f
/f
64
128
1 1: f
/f
512
1024
/
select bit
CTS
RTS
0:
CTS function selected
1: RTS function selected (CTS
function disabled)
7751 Group User's Manual
UART0 baud rate register (BRG0) (Address 31
UART1 baud rate register (BRG1) (Address 39
b7
UART0 transmit interrupt control register (Address 71
UART1 transmit interrupt control register (Address 73
b7
b0
UART0 transmit buffer register (Addresses 33
UART1 transmit buffer register (Addresses 3B
b8
b7
Set transmit data here.
UART0 transmit/receive control register 1 (Address 35
UART1 transmit/receive control register 1 (Address 3D
b7
Transmission starts.
(In the case of selecting the
starts when the
pin's input level is "L.")
CTS
i
SERIAL I/O
)
16
)
16
b0
Set to 00
to FF
.
16
16
)
16
)
16
Interrupt priority level select bits
When using interrupts, set these bits to
level 1–7.
When disabling interrupts, set these
bits to level 0.
, 32
)
16
16
, 3A
)
16
16
b0
)
16
)
16
b0
1
Transmit enable bit
1: Transmission enabled
function, transmission
CTS
7–41
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