Renesas M16C/6NK Hardware Manual page 171

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M16C/6N Group (M16C/6NK, M16C/6NM)
UARTi Transmit Buffer Register (i = 0 to 2)
(b15)
b7
NOTE:
1. Use the MOV instruction to write to this register.
UARTi Receive Buffer Register (i = 0 to 2)
(b15)
b7
NOTES:
1. The ABT bit is set to "0" by writing "0" in a program. (Writing "1" has no effect.)
2. When the SMD2 to SMD0 bits in the UiMR register = 000b (serial interface disabled) or the RE bit in the UiC1 register = 0
(reception disabled), all of the SUM, 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 Register (i = 0 to 2)
b7
NOTES:
1. Write to this register while serial I/O is neither transmitting nor receiving.
2. Use the MOV instruction to write to this register.
3. Write to this register after setting the CLK1 to CLK0 bits in the UiC0 register.
Figure 15.5 U0TB to U2TB Registers, U0RB to U2RB Registers, and U0BRG to U2BRG Registers
Rev.2.00 Nov 28, 2005
REJ09B0124-0200
(b8)
b0 b7
Bit
Symbol
-
(b8-b0)
-
(b15-b9)
(b8)
b0 b7
Bit
Symbol
-
(b7-b0)
-
(b8)
-
(b10-b9)
ABT
OER
FER
PER
SUM
b0
Bit
Symbol
-
(b7-b0)
page 153 of 378
(1)
Symbol Address
b0
U0TB 03A3h to 03A2h
U1TB 03ABh to 03AAh
U2TB 01FBh to 01FAh
Function
Transmit data
Nothing is assigned When write, set to "0".
When read, their contents are indeterminate.
Symbol Address
b0
U0RB 03A7h to 03A6h
U1RB 03AFh to 03AEh
U2RB 01FFh to 01FEh
Bit Name
- Receive data (
- Receive data (
Nothing is assigned When write, set to "0".
When read, their contents are "0".
Arbitration Lost 0 : Not detected
(1)
Detecting Flag 1 : Detected
0 : No overrun error
(2)
Overrun Error Flag
1 : Overrun error found
0 : No framing error
(2)
Framing Error Flag
1 : Framing error found
0 : No parity error
(2)
Parity Error Flag
1 : Parity error found
0 : No error
(2)
Error Sum Flag
1 : Error found
(1) (2) (3)
Symbol Address
U0BRG
U1BRG
U2BRG
Function
Assuming that set value = n, UiBRG
divides the count source by n + 1
15. Serial Interface
After Reset
Indeterminate
Indeterminate
Indeterminate
After Reset
Indeterminate
Indeterminate
Indeterminate
Function
D7 to D0)
D8)
After Reset
Indeterminate
03A1h
Indeterminate
03A9h
Indeterminate
01F9h
Setting Range
00h to FFh
RW
WO
-
RW
RO
RO
-
RW
RO
RO
RO
RO
RW
WO