
Figure 16.4
U0SMR2 to U4SMR2 Registers
b7 b6 b5 b4
b1
b2
b3
Symbol
U0SMR2 to U2SMR2
U3SMR2, U4SMR2
Address
0366h, 02E6h, 0336h
0326h, 02F6h
After Reset
00h
b0
Function
Bit Symbol
Bit Name
RW
SWC
CSC
IICM2
SWC2
SDHI
When arbitration lost is detected,
0: SDAi output not stopped
1: SDAi output stopped
SDA output auto stop bit(2)
SDA output stop bit(3)
I2C mode select bit 2(1)
STC
ALS
When start condition is detected,
0: UARTi not initialized
1: UARTi initialized
0: Output data
1: Output stopped (Hi-impedance state)
UARTi auto initialization bit(3)
0: Serial clock output from SCLi pin
1: SCLi pin is held "L"
SCL wait output bit 2(2)
External clock synchronous
enable bit(4)
0: Not synchronized with external clock
1: Synchronized with external clock
SU1HIM
UARTi Special Mode Register 2 (i = 0 to 4)
RW
Clock synchronous bit(2)
SCL wait output bit(1)
0: Not clock synchronized
1: Clock synchronized
0: No wait state/release wait states
1:SCLi pin is held "L" after receiving 8th bit.
0: ACK/NACK interrupt used
1: Transmit/receive interrupt used
NOTES:
1. These bits are used in I2C mode.
2. These bits are used when the MCU is in master mode in I2C mode.
3. These bits are used when the MCU is in slave mode in I2C mode.
4. The external clock synchronous function can be selected with the combination of the SU1HIM bit and the SCLKDIV bit in the
UiSMR register. The SU1HIM bit is used in GCI mode.
SCLKDIV Bit in the
UiSMR register
SU1HIM Bit in the
UiSMR2 register
External Clock Synchronous Function Select
0
Not synchronized
0
1
Same frequency as external clock
1
External clock divided by 2