Renesas M16C/50 Series User Manual page 484

M16C/5L Group, M16C/56 Group
21.2.11 UART2 Special Mode Register 2 (U2SMR2)
UART2 Special Mode Register 2
b7 b6 b5 b4 b3 b2 b1
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
Symbol
b0
U2SMR2
Bit Symbol Bit Name
2
IICM2 I C mode select bit 2
CSC Clock synchronization bit
SWC SCL wait auto insert bit
ALS SDA output auto stop bit
STAC UART2 auto initialize bit
SWC2 SCL wait output bit 2
SDHI SDA output disable bit
—
No register bit. If necessary, set to 0. The read value is undefined.
(b7)
21. Serial Interface UARTi (i = 0 to 4)
Address
0266h
Function
0 : Use NACK/ACK interrupt
1 : Use transmit/receive interrupt
0 : Clock synchronization disabled
1 : Clock synchronization enabled
0 : No wait-state/wait-state cleared
1 : Hold the SCL2 pin low after the eighth
bit is received
When arbitration lost is detected,
0 : Do not stop the SDA2 output
1 : Stop the SDA2 output
When the start condition is detected,
0 : Do not initialize the circuit
1 : Initialize the circuit
0: Output the transmit/receive clock at the
SCL2 pin
1: Hold the SCL2 pin low
0: Output data
1: Stop the output (high-impedance)
Reset Value
X000 0000b
RW
RW
RW
RW
RW
RW
RW
RW
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