Renesas M16C Series User Manual page 211

M30240 Group
Setting UART1 bit rate generator
b7
Note: Write to UARTi bit rate generator when transmission/reception is stopped.
Transmission enabled
b7
Writing transmit data
(b15)
b7
Note: Write to UARTi bit rate generator when transmission/reception is halted.
Checking the status of UART1 transmit buffer register
b7
Writing next transmit data
(b15)
b7
Figure 2.50: Set-up procedure of transmission in clock-synchronous serial I/O mode, transfer clock
output from multiple pins function selected (2)
Rev.1.00 Sep 24, 2003 Page 193 of 360
Continued from the previous page
b0
UART1 bit rate generator [Address 03A9
U1BRG
(Note)
Can be set from 00 to FF
16 16
b0
UART1 transmit/receive control register 1 [Address 03AD
1
U1C1
Transmit enable bit
1 : Transmission enabled
(b8)
b0 b7 b0
UART1 transmit buffer register [Address 03AB
U1TB
Setting transmission data
Start transmission
b0
UART1 transmit/receive control register 1 [Address 03AD
U1C1
Transmit buffer empty flag
0 : Data present in transmit buffer register
1 : No data present in transmit buffer register (Writing next transmit data enabled)
(b8)
b0 b7 b0
UART1 transmit buffer register [Address 03AB
U1TB
Setting transmission data
Transmission is complete
Clock-Synchronous Serial I/O
]
16
]
16
, 03AA
16
]
16
, 03AA
16
]
16
]
16