TAS5731MPHPR datasheet(34/81 Pages) TI1

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TAS5731M

SLOS838C – JULY 2013 – REVISED AUGUST 2015

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9.4 Device Functional Modes

9.4.1 Stereo BTL Mode

The classic stereo mode of operation uses the TAS5731M device to amplify two independent signals, which

represent the left and right portions of a stereo signal. These amplified left and right audio signals are presented

on differential output pairs shown as OUT_A and OUT_B for a channel and OUT_C and OUT_D for the other

one. The routing of the audio data which is presented on the OUT_x outputs can be changed according to the

PWM Output Mux Register (0x25). By default, the TAS5731M device is configured to output channel 1 to the

OUT_A and OUT_B outputs, and channel 2 to the OUT_C and OUT_D outputs. Stereo Mode operation outputs

are shown in Figure 57.

Figure 57. Stereo BTL Mode

9.4.2 Mono PBTL Mode

When this mode of operation is used, the two stereo outputs of the device are placed in parallel one with another

to increase the power sourcing capabilities of the device. The TAS5731M supports parallel BTL (PBTL) mode

with OUT_A/OUT_B (and OUT_C/OUT_D) connected before the LC filter.

The merging of the two output channels in this device can be done before the inductor portion of the output filter.

This is called Single-Filter PBTL, and this mono operation is shown in Figure 58. More information about this can

be found in Single-Filter PBTL Mode section.

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