Datasheet

Play- Paused

DACPowerDown

Update

DigitalFilter

Coefficients

DACPowerUP

Wait20ms

VolumeRampDown

SoftMute

Restore Previous

VolumeLevel(Ramp)

in(B)ms

Play- Continue

Wait(A)ms

Forf =32kHz

® Wait25ms(min)

Forf =48kHz Wait20ms(min)

For =32kHz ®f 25ms

Forf =48kHz 20ms

DACVolumeRampDownWAIT Time(A)

DACVolumeRampUp Time(B)

F0024-02

TLV320AIC3120

www.ti.com

SLAS653A –FEBRUARY 2010–REVISED MAY 2012

Figure 5-33. Example Flow For Updating DAC Digital Filter Coefficients During Play

5.6.8 Digital Mixing and Routing

The TLV320AIC3120 has four digital mixing blocks. Each mixer can provide either mixing or multiplexing

of the digital audio data. The first mixer/multiplexer can be used to select input data for the mono DAC

from left channel, right channel, or a mix of the left and right channels [(L + R) / 2] . This digital routing can

be configured by writing to page 0 / register 63, bits D5–D4 for the DAC mono channel.

5.6.9 Analog Audio Routing

The TLV320AIC3120 has the capability to route the DAC output to either the headphone or the speaker

output. If desirable, both output drivers can be operated at the same time while playing at different volume

levels. The TLV320AIC3120 provides various digital routing capabilities, allowing digital mixing or even

channel swapping in the digital domain. All analog outputs other than the selected ones can be powered

down for optimal power consumption.

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