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数据搜索系统，热门电子元器件搜索 |
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TDA7406 数据表(PDF) 26 Page - STMicroelectronics |
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TDA7406 数据表(HTML) 26 Page - STMicroelectronics |
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26 / 64 page  Description of the audioprocessor part TDA7406 26/64 Figure 17. AC/DC-coupling and MixIn Inputs 4.10 Speaker-Attenuator stage Each of the four speakers and the subwoofer output has a separate volume control in the range: +15... -79dB plus mute with a typical value of -90dB. 4.11 Output Mixer A Mixing-stage is placed after each speaker gain/attenuator stage and can be set independently to mixing-mode. Having a full volume control for the Mix-signal in the range:+15... -79dB plus mute with a typical value of -90dB, the stage offers a wide flexibility to adapt the mixing levels. Figure 18. Output Selector 4.12 Audioprocessor Testing During the Test Mode, which can be activated by setting bit I2 of the subaddress byte and D0 of the audioprocessor testing byte, several internal signals are available at the Navi pin. During this mode the input resistance of 100k Ω is disconnected from the pin. The internal signals available are shown in the Data-byte specification. |
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