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13.
Serial Bus Interface (I2C/SIO)
13.5
Control in the I2C Bus Mode
13.5.15
Baud Rate Register (SBIBR0)
The SBIBR0<I2SBI> register determines if the SBI operates or not when it enters the IDLE mode.
This register must be programmed before executing an instruction to switch to the standby mode.
13.5.16
Software Reset
If the serial bus interface circuit locks up due to external noise, it can be initialized by using a software reset.
Writing "10" followed by "01" to SBIxCR2<SWRST[1:0]> generates a reset signal that initializes the serial
bus interface circuit. When writing SBIxCR2<SWRST[1:0]>, set SBIxCR2<MST><TRX><BB><PIN> to
"0000" and SBIxCR2<SBIM[1:0]> to "10" for I2C bus mode. After a reset, all control registers and status
flags are initialized to their reset values. When the serial bus interface is initialized, <SWRST[1:0]> is
automatically cleared to "0".
Note: A software reset causes the SBI operating mode to switch from the I2C mode to the port mode.
2019-02-06
Page 286
TMPM3V6/M3V4
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