Renesas M16C Series User Manual page 230

M30240 Group
Setting UARTi transmit/receive mode register (i=0 to 2)
b7 b0
0 1 0 0 0 1 0 1
Setting UARTi transmit/receive control register 0 (i = 0 to 2)
b7 b0
0 0 0 0
Setting UART transmit/receive control register 2 and UART2 transmit/receive control register 1
b7 b0
0 0 1 1
Figure 2.63: Set-up procedure of transmission in UART mode (1)
Rev.1.00 Sep 24, 2003 Page 212 of 360
UART0 transmit/receive mode register
U0MR [Address 03A0 ]
16
UART1 transmit/receive mode register
U1MR [Address 03A8 ]
16
Serial I/O mode select bit
b2 b1 b0
1 0 1 : Transfer data 8 bits long
Internal/external clock select bit
0 : Internal clock
Stop bit length select bit
0 : One stop bit
Odd/even parity select bit Valid when bit 6 = "1"
(
0 : Odd parity
Parity enable bit
1 : Parity enabled
Sleep select bit
0 : Invalid
UART0 transmit/receive control register 0
U0C0 [Address 03A4 ]
16
UART1 transmit/receive control register 0
U1C0 [Address 03AC ]
16
BRG count source select bit
b1 b0
0 0 : f is selected
1
0 1 : f is selected
8
1 0 : f is selected
32
1 1 : Inhibited
CTS/RTS function select bit (Valid when bit 4 = "0")
0 : CTS function is selected
Transmit register empty flag
0 : Data present in transmit register
(during transmission)
1 : No data present in transmit register
(transmission completed)
CTS/RTS disable bit
0 : CTS/RTS function enabled
Must be "0" in UART mode
Must be "0" in UART mode
UART transmit/receive control register 2
UCON [Address 03B0 ]
16
UART0 transmit interrupt cause select bit
1 : Transmission completed (TXEPT = 1)
UART1 transmit interrupt cause select bit
1 : Transmission completed (TXEPT = 1)
Invalid in UART mode
Invalid in UART mode
Invalid in UART mode
Must be "0" in UART mode
Reserved
Must always be "0"
Continued to the next page
b7 b0
UART2 transmit/receive mode register
0 1 0 0 0 1 0 1
U2MR [Address 0378
Serial I/O mode select bit
b2 b1 b0
1 0 1 : Transfer data 8 bits long
Internal/external clock select bit
0 :
Must be "0" in UART mode
Stop bit length select bit
0 : One stop bit
)
Odd/even parity select bit
0 : Odd parity
Parity enable bit
1 : Parity enabled
T D, R D I/O polarity reverse bit
X X
Usually set to "0"
b7 b0
UART2 transmit/receive control register 0
0 0 0 0
U2C0 [Address 037C
BRG count source select bit
b1 b0
0 0 : f is selected
1
0 1 : f is selected
8
1 0 : f is selected
32
1 1 : Inhibited
CTS/RTS function select bit (Valid when bit 4 = "0")
0 : CTS function is selected
Transmit register empty flag
0 : Data present in transmit register
(during transmission)
1 : No data present in transmit register
(transmission completed)
CTS/RTS disable bit
0 : CTS/RTS function enabled
Must be "0" in UART mode
Transfer format select bit
0 : LSB first
b7 b0
UART2transmit/receive control register 1
0 0 1
U2C1 [Address 037D
UART0 transmit interrupt cause select bit
1 : Transmission completed (TXEPT = 1)
Invalid in UART mode
Data logic select bit
0 : No reverse
Error signal output enable bit
0 : output enabled
Clock-Asynchronous Serial I/O
]
16
Valid when bit 6 = "1"
( )
]
16
]
16