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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TAS2781RYYR датащи(PDF) 29 Page - Texas Instruments |
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TAS2781RYYR датащи(HTML) 29 Page - Texas Instruments |
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29 / 90 page  Table 8-6. Supported SBCLK Frequencies [MHz] for 44.1 kHz Based Sample Rates Sample Rate (kHz) SBCLK to FSYNC Ratio 16 24 32 48 64 96 14.7 NA NA NA 0.7056 0.9408 1.4112 22.05 NA NA 0.7056 1.0584 1.4112 2.1168 29.4 NA 0.7056 0.9408 1.4112 1.8816 2.8224 44.1 0.7056 1.0584 1.4112 2.1168 2.8224 4.2336 88.2 1.4112 2.1168 2.8224 4.2336 5.6448 8.4672 176.4 2.8224 4.2336 5.6448 8.4672 11.2896 16.9344 Sample Rate (kHz) SBCLK to FSYNC Ratio 128 192 256 384 512 14.7 1.8816 2.8224 3.7632 5.6448 7.5264 22.05 2.8224 4.2336 5.6448 8.4672 11.2896 29.4 3.7632 5.6448 8.4672 8.192 15.0528 44.1 5.6448 8.4672 11.2896 16.9344 22.5792 88.2 11.2896 16.9344 22.5792 33.8688 NA 176.4 211.5792 33.8688 NA NA NA 8.4.11 Ultrasonic The TAS2781 has a dedicated power mode (PWR_MODE3) to play ultasound in advance ultrasonic applications like presence detection, gesture recognition, etc. When playing ultrasound it is recommended to set bits DEM_CTRL[1:0] to 3h and bit DIS_DITH to 1h. In PWR_MODE3 mode of operation the output stage of Class-D will be supplied by external PVDDL rail. 8.4.12 Echo Reference The TAS2781 can loop back the DSP output. This feature allows user to do noise cancellation or echo correction algorithms. A block diagram is presented in the figure below. Figure 8-6. Echo Reference Loopback The echo reference can be enabled by configuring AUDIO_TX register bit. The slot length and the time slot can be selected using AUDIO_SLEN and AUDIO_SLOT[5:0] register bits. 8.4.13 Hybrid-Pro External Boost Controller The device has implemented an internal Hybrid-Pro algorithm allowing users to optimize the efficiency in the system by controlling the external power supply and maintaining just enough margin to provide high dynamic range without clipping distortions. Features of Hybrid-Pro control: www.ti.com TAS2781 SLOSE86B – JULY 2022 – REVISED JULY 2023 Copyright © 2023 Texas Instruments Incorporated Submit Document Feedback 29 Product Folder Links: TAS2781 |
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