r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 435

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
20.2.6
Notes:
After Reset
After Reset
b10
b12
b13
b14
b15
b11
1. Bit function differs depending on whether the multiprocessor communication function is being used.
2. Enabled only in I
3. When bits SMD2 to SMD0 in the U2MR register are set to 000b (serial interface disabled) or the RE bit in the
4. Enabled in all modes.
5. Enabled only in UART and multiprocessor modes. Disabled in other modes.
Bit
b0
b1
b2
b3
b4
b5
b6
b7
b8
b9
Address 000C6h
U2C1 register is set to 0 (reception disabled), all of bits SUM, PER, FER, and OER are set to 0 (no error). The
SUM bit is set to 0 (no error) when all of bits PER, FER, and OER are set to 0 (no error). Bits PER and FER are
set to 0 by reading the lower byte in the U2RB register.
When setting bits SMD2 to SMD0 in the U2MR register to 000b, set the TE bit in the U2C1 register to 0
(transmission disabled) and the RE bit to 0 (reception disabled).
Use the MOV instruction to write the receive data (D0 to D8).
Access the U2RB register in word (16-bit) units.
Symbol
Symbol
Symbol
MPRB
Bit
Bit
SUM
OER
PER
ABT
FER
UART2 Receive Buffer Register (U2RB)
—
—
—
—
—
—
—
—
—
—
Preliminary document
Specifications in this document are tentative and subject to change.
SUM
b15
b7
—
0
0
Receive data (D0 to D7)
Receive data (D8)/multiprocessor bit
(1)
Nothing is assigned. The write value must be 0. The read value is undefined.
Arbitration lost detection flag
Overrun error flag
Framing error flag
Parity error flag
Error sum flag
2
C mode. Disabled in other modes. Writing 0 clears this bit. Writing 1 has no effect.
PER
b14
b6
—
0
0
Bit Name
(3, 4)
(3, 5)
(3, 4)
(3, 5)
FER
b13
b5
—
0
0
OER
(2)
b12
b4
—
0
0
[When the multiprocessor communication function
is not used]
Receive data (D8)
[When the multiprocessor communication function
is used]
• When the MPRB bit is set to 0, received D0 to D7
• When the MPRB bit is set to 1, received D0 to D7
0: Not detected
1: Detected
0: No overrun error
1: Overrun error
0: No framing error
1: Framing error
0: No parity error
1: Parity error
0: No error
1: Error
ABT
b11
are data fields.
are ID fields.
b3
—
0
0
b10
b2
—
—
0
0
Function
b1
b9
—
—
0
0
20. Serial Interface (UART2)
MPRB
b0
b8
—
0
0
Page 404 of 725
R/W
—
R
R
R
R
R
R
R
R
R
R
R
R
R