Datasheet

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TLV320AIC34

SLAS538A – OCTOBER 2007 – REVISED NOVEMBER 2007

• Combinations of the foregoing

The output-stage architecture of each partition leading to the high-power output drivers is shown in Figure 35 ,

with the volume control and mixing blocks being effectively identical to those shown in Figure 34 . Note that each

of these drivers has an output level control block like those included with the line output drivers, allowing gain

adjustment up to 9 dB on the output signal. As in the previous case, this output level adjustment is not intended

to be used as a standard volume control, but instead is included for additional full-scale output signal level

control.

Two of the output drivers in each partition, HPROUT_x and HPLOUT_x, include a direct connection path for the

stereo DAC outputs to be passed directly to the output drivers, bypassing the analog volume controls and mixing

networks, by using the DAC_L2/R2 path. As in the line output case, this functionality provides the highest-quality

DAC playback performance with reduced power dissipation, but can only be used if the DAC output is not being

routed to multiple output drivers simultaneously, and if mixing of the DAC output with other analog signals is not

needed.

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