Renesas M16C/60 Series Hardware Manual page 150

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M16C/6N5 Group
UARTi transmit buffer register (i = 0 to 2)(Note)
(b15) (b8)
b7 b0
Note: Use MOV instruction to write to this register.
UARTi receive buffer register (i = 0 to 2)
(b15) (b8)
b7 b0
Note 1: The ABT bit is set to "0" by writing "0" in a program. (Writing "1" has no effect.)
Note 2: When the UiMR register's SMD2 to SMD0 bits = 000
PER, FER and OER bits are set to "0" (no error). The SUM bit is set to "0" (no error) when all of the PER, FER and OER bits are = 0 (no error).
Also, the PER and FER bits are set to "0" by reading the lower byte of the UiRB register.
UARTi bit rate generator (i = 0 to 2)(Notes 1, 2)
b7 b0
Note 1: Write to this register while serial I/O is neither transmitting nor receiving.
Note 2: Use MOV instruction to write to this register.
Figure 1.15.3 U0TB to U2TB Registers, U0RB to U2RB Registers, and U0BRG to U2BRG Registers
Rev.1.00 2003.05.30 page 136
Symbol
U0TB
b7 b0
U1TB
U2TB
Transmit data
Nothing is assigned When write, set to "0".
When read, their contents are indeterminate.
Symbol
b7 b0
Bit
symbol
(b7-b0)
(b8)
Nothing is assigned When write, set to "0".
(b10-b9) When read, their contents are indeterminate.
Arbitration lost detecting
ABT
flag (Note 1)
Overrun error flag (Note 2)
OER
FER Framing error flag (Note 2)
PER Parity error flag (Note 2)
Error sum flag (Note 2)
SUM
(serial I/O disabled) or the UiC1 register's RE bit = 0 (reception disabled), all of the SUM,
2
Symbol
U0BRG
U1BRG
U2BRG
Assuming that set value = n, UiBRG divides the count source
by n + 1
Address After reset
03A3 -03A2 Indeterminate
16 16
03AB -03AA Indeterminate
16 16
01FB -01FA Indeterminate
16 16
Function
.
Address After reset
U0RB 03A7 -03A6 Indeterminate
16 16
U1RB 03AF -03AE Indeterminate
16 16
U2RB 01FF -01FE Indeterminate
16 16
Bit name
Receive data (D
7
Receive data (D
8
0 : Not detected
1 : Detected
0 : No overrun error
1 : Overrun error found
0 : No framing error
1 : Framing error found
0 : No parity error
1 : Parity error found
0 : No error
1 : Error found
Address After reset
03A1 Indeterminate
16
03A9 Indeterminate
16
01F9 Indeterminate
16
Function
.
Function
to D )
0
)
.
Setting range
00 to FF
16 16
Serial I/O
RW
WO
RW
RO
RO
RW
RO
RO
RO
RO
RW
WO