Dears:
When system Power ON, the position of the tone on the output voltage is in the middle of Vout as described in datasheet.
When we switch to the low local frequency point to stop 22K signal, and then switch back to the high local frequency point, the tone on the output voltage as below:
The voltage is not in middle mode. Would you please help to check the reason? Thanks!
Software as below:
u8RegVal |= (0x1 << 7);
TI_WriteReg(pstParam, TPS65233_CTRL_0, u8RegVal);
/*Enable external tone mode*/
TI_ReadReg(pstParam, TPS65233_CTRL_0, &u8RegVal);
u8RegVal &= ~(0x3 << 4);
u8RegVal &= ~(0x7 << 0);
u8RegVal |= (0x1 << 5);
TI_WriteReg(pstParam, TPS65233_CTRL_0, u8RegVal);
/*Current limit 600mA set by internal register*/
TI_ReadReg(pstParam, TPS65233_CTRL_1, &u8RegVal);
u8RegVal &= ~(0x3 << 1);
u8RegVal |= (0x1 << 1);
u8RegVal &= ~(0x01);
TI_WriteReg(pstParam, TPS65233_CTRL_1, u8RegVal);
