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Figure 2.3.7. Set-up procedure of transmission in clock-synchronous serial I/O mode (2)
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Continued from the previous page
Setting UARTi bit rate generator (i = 0 to 3)
b7
b0
UARTi bit rate generator [Address 03A9
UiBRG (i = 0 to 3)
Can be set to 00
Note: Use MOV instruction to write to this register.
Write to UARTi bit rate generator when transmission/reception is halted.
Transmission enabled
b7
b0
UARTi transmit/receive control register 1
UiC1 [Address 03AD
1
Transmit enable bit
1 : Transmission enabled
Writing transmit data (Note)
(b15
(b8)
b7
b0 b7
b0
Setting transmission data
Setting transmission data (9th bit)
Note: Use MOV instruction to write to this register.
Checking the status of UARTi transmit /receive control register (i = 0 to 3)
b7
b0
UARTi transmit/receive control register 1
UiC1 [Address 03AD
Transmit buffer empty flag
0 : Data present in transmit buffer register
1 : No data present in transmit buffer register (Writing next transmit data enabled)
When transmitting continuously
Writing next transmit data (Note)
(b15)
(b8)
b7
b0 b7
b0
Note: Use MOV instruction to write to this register.
page 48 of 354
, 0369
, 0339
16
16
to FF
(Note)
16
16
, 36D
, 033D
, 32D
]
16
16
16
16
UART0 transmit buffer register [Address 03AB
UART1 transmit buffer register [Address 036B
UART2 transmit buffer register [Address 033B
UART3 transmit buffer register [Address 032B
When CTSi input level = "L"
Start transmission
, 36D
, 033D
, 32D
]
16
16
16
16
UART0 transmit buffer register [Address 03AB
UART1 transmit buffer register [Address 036B
UART2 transmit buffer register [Address 033B
UART3 transmit buffer register [Address 032B
Setting transmission data
Setting transmission data (9th bit)
Transmission is complete
2. Clock-Synchronous Serial I/O
, 0329
,]
16
16
, 03AA
] U0TB
16
16
, 036A
] U1TB
16
16
, 033A
] U2TB
16
16
, 032A
] U3TB
16
16
, 03AA
] U0TB
16
16
, 036A
] U1TB
16
16
, 033A
] U2TB
16
16
, 032A
] U3TB
16
16
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