r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 440

• 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
20.2.12 UART2 Special Mode Register (U2SMR)
Notes:
After Reset
1. In I
2. Can be set when using as master in I
3. When the IICM bit is 1 and the IICM2 bit in the U2SMR2 register is also 1 (UART transmit/UART receive
4. Enabled only in I
5. The SSS bit is set to 0 (not synchronized to RXD2) when transfer starts.
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 000D7h
interrupt), set the ABC bit to 0.
Write to the U2SMR register using the MOV instruction.
Symbol
2
C mode, set to 1. In other modes, set to 0.
Symbol
ABSCS Bus collision detect sampling clock
Bit
IICM
ABC
BBS
SSS
—
—
—
Preliminary document
Specifications in this document are tentative and subject to change.
b7
—
0
I
Arbitration lost detection flag control
bit
Bus busy flag
Reserved
select bit
Reserved
Transmit start condition select bit
Nothing is assigned. The write value must be 0. The read value is 0.
2
C mode select bit
2
(2, 3)
C mode. Disabled in other modes.
SSS
b6
0
Bit Name
(4)
b5
(1)
—
0
2
C mode. In other modes, set to 0.
ABSCS
b4
0
(5)
0: Other than I
1: I
0: Update every bit
1: Update every byte
0: Stop condition detected
1: Start condition detected (busy)
Set to 0.
0: Rising edge of transfer clock
1: Underflow signal of timer RB2
Set to 0.
0: Not synchronized to RXD2
1: Synchronized to RXD2
b3
—
0
2
C mode
BBS
b2
0
2
C mode
Function
ABC
b1
0
20. Serial Interface (UART2)
IICM
b0
0
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R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
R