TDA7402 Datasheet, PDF (22/59 Pages) STMicroelectronics – CARRADIO SIGNAL PROCESSOR

TDA7402
1.13 Output Selector
The output-selector allows to connect the main- or the second-source to the Front-, Rear and Subwoofer speak-
er-attenuator, respectively. As an example of this programming the device is able to connect via software the
main-source to the back (rear) and the second-source to the front (see Figure 17). In addition to this stage allows
to setup different applications by IIC-Bus programming. In figure 18 to 20 three examples are given.
Figure 17. Output Selector
1.14 Subwoofer
Several different applications are possible with the Subwoofer-circuit:
1. Subwoofer-Filter OFF
a. Main-source stereo (AC-coupled)
b. Second-source stereo (DC-coupled)
c. Main-source mono-differential (DC-coupled)
d. Second-source mono-differential (DC-coupled)
2. Subwoofer-Filter ON
a. Main-source mono-differential (DC-coupled)
b. Second-source mono-differential (DC-coupled)
c. Center-Speaker-Mode (filtered mono signal at SWL, unfiltered mono signal at SWR)
In all applications the phase of the output-signal can be configured to be 0° or 180° . In the Center-Speaker-
Mode only at the filtered output the phase is changed.
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