Chapter 13
Serial Interface
XIII - 18 Control Registers
SCIFn (n = 2, 3) Mode Register 3 (SC2MD3, SC3MD3)
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The readout value of IIC3STPC can be different from the value that is written to the bit in
advance since IIC3STPC is cleared to "0" by hardware after the stop condition is generated.
To avoid rewriting a value of IIC3STPC, be sure not to set the SCnMD3 (n = 2, 3) with read-
modify-write instructions such as BSET or BCLR.
..
..
*1 When reception mode (IIC3REX bit = 1), IIC3ACKO cannot be read out.
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bp76543210
Bit name Reserved Reserved IIC3STPC IIC3TMD IIC3REX SCnCMD IIC3ACKS IIC3ACKO
Initial
value
00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
bp Bit name Description
7-6 Reserved Always set to "0"
5IIC3STPC
IIC stop condition generation
0: None
1: Generate stop condition
4IIC3TMD
IIC communication mode
0: Standard mode
1: High-speed mode
3IIC3REX
Selection of Transmission/reception in master communication
0: Transmission mode
1: Reception mode
2 SCnCMD
Communication mode selection
0: Clock-Synchronous communication
1: IIC communication
1 IIC3ACKS Always set "1".
0IIC3ACKO
ACK/NACK detection (when IIC3REX is "0".)
0: ACK detected
1: NACK detected
ACK/NACKACK bit level selection (*1)(when IIC3REX is "1".)
0: ACK transmission
1: NACK transmission
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