ZHCSGM5A August 2017 – November 2017 TLV320AIC3109-Q1
PRODUCTION DATA.
The TLV320AIC3109-Q1 includes extensive capability to monitor a headphone, microphone, or headset jack, determine if a plug has been inserted into the jack, and then determine what type of headset or headphone is wired to the plug. Figure 24 shows one configuration of the device that enables detection and determination of headset type when a pseudo-differential (capacitor free) mono headphone output configuration is used. The registers used for this function are registers 14, 96, 97, and 13, page 0. The type of headset detected can be read back from register 13, page 0. For best results, select a MICBIAS value as high as possible and program the output driver common-mode level at a 1.35-V or 1.5-V level.
Figure 25 shows a modified output configuration used when the output drivers are ac-coupled.