Datasheet

Stereoheadset
Stereo
hands-free
classD
Monoearpiece
Mainmicrophone
Submicrophone
Headsetmicrophone
Stereoauxiliary
input
Digital
microphones
(upto4)
Voice
PCM
interface
Audio
TDM/I2S
interface
High-speed
I C
2
(control)
Audio/voicemodule
HFCLKIN
BiasLDOs
(x3)
Carkit/MCPC
speaker/
microphone
Bluetooth
PCM
interface
Vibrator
H-bridge
Device
032-014
TPS65950
SWCS032E–OCTOBER 2008–REVISED JANUARY 2011 www.ti.com
6 Audio/Voice Module
The audio codec in the device includes five DACs and two ADCs to provide multiple voice channels and
stereo downlink channels that can support all standard audio sample rates through I2S/TDM format
interfaces. The audio output stages on the device include stereo headset amplifiers, two integrated
class-D amplifiers providing stereo differential outputs, predrivers for line outputs, and an earpiece
amplifier. The input audio stages include three differential microphone inputs, stereo line inputs, and
interface for digital micrphones. Automatic and programmable gain control is available with all necessary
digital filtering, side-tone functions, and pop-noise reduction.
Figure 6-1 is a block diagram of the audio/voice module.
Figure 6-1. Audio/Voice Module Block Diagram
66 Audio/Voice Module Copyright © 2008–2011, Texas Instruments Incorporated
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