SLASF30A January 2022 – December 2024 TAA5212
PRODUCTION DATA
The TAA5212 supports voice activity detection (VAD) mode as part of low power activity detection (LPAD) schemes. In this mode, the TAA5212 continuously monitors one of the input channels for voice detection. The device consumes low quiescent current from the AVDD supply in this mode. This feature can be enabled by setting VAD_EN (P0_R120_D[2]) to 1'b1. On detecting voice activity, the TAA5212 can alert the host through an interrupt or auto wake up and start recording based on the I2C programmed configuration. This alert can be configured through the LPAD_MODE (P1_R30_D[7:6]) register bits.
This feature is supported on both the analog and digital microphone interfaces. For lowest power VAD, the digital microphone interface is recommended. The input channel for the VAD can be selected by setting the LPAD_CH_SEL (P1_R30_D[5:4]) register bits to an appropriate value. See the How to use the Voice Activity Detection in the TAx511x and TAx521x application report for further details.