Other Parts Discussed in Thread: CC3200AUDBOOST
Hi
We use "LAUNCHXL-CC26X2R1"+ "CC3200AUDBOOST" to evaluate our project.
We found / observed what the headphone-out of CC3200AUDBOOST has the POP noise when it is powered up.
Do we need to follow up "2.2.3.1 Stereo Single Ended Configuration" to add the Schottky diode to CC3200AUDBOOST?
If yes, do we need to change AIC3254 configuration? please refer to the following our AIC3254 setting:
// Configure Power Supplies AudioCodec_pageSelect(TI3254_PAGE_1); //Select Page 1 AudioCodec_regWrite(TI3254_PWR_CTRL_REG, 0x08); // Disabled weak connection of AVDD with DVDD AudioCodec_regWrite(TI3254_LDO_CTRL_REG, 0x01); // Over Current detected for AVDD LDO AudioCodec_regWrite(TI3254_ANALOG_IP_QCHRG_CTRL_REG, 0x32); // Analog inputs power up time is 6.4 ms AudioCodec_regWrite(TI3254_REF_PWR_UP_CTRL_REG, 0x01); // Reference will power up in 40ms when analog blocks are powered up //De-pop: 5 time constants, 6k resistance AudioCodec_regWrite(TI3254_HP_DRV_START_UP_CTRL_REG, 0x25); // Headphone ramps power up time is determined with 6k resistance,
Thanks.
BR
Trevor