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TLV320DAC3120 Datasheet(PDF) 45 Page - Texas Instruments |
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TLV320DAC3120 Datasheet(HTML) 45 Page - Texas Instruments |
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45 / 110 page  BCLK WCLK 1 0 0 1 0 T0149-05 1/f S LSB MSB Left Channel Right Channel 2 2 DIN n–1 n–1 n–2 n–2 n–3 n–3 TLV320DAC3120 www.ti.com SLAS659 – NOVEMBER 2009 The TLV320DAC3120 also includes a feature to offset the position of start of data transfer with respect to the word clock. This offset can be controlled in terms of number of bit clocks and can be programmed in page 0 / register 28. The TLV320DAC3120 also has the feature of inverting the polarity of the bit clock used for transferring the audio data as compared to the default clock polarity used. This feature can be used independently of the mode of audio interface chosen. This can be configured via page 0 / register 29, bit D3. By default, when the word clocks and bit clocks are generated by the TLV320DAC3120, these clocks are active only when the DAC is powered up within the device. This is done to save power. However, it also supports a feature when both the word clocks and bit clocks can be active even when the codec in the device is powered down. This is useful when using the TDM mode with multiple codecs on the same bus, or when word clocks or bit clocks are used in the system as general-purpose clocks. 5.8.1.1 Right-Justified Mode The audio interface of the TLV320DAC3120 can be put into right-justified mode by programming page 0 / register 27, bits D7–D6 = 10. In right-justified mode, the LSB of the left channel is valid on the rising edge of the bit clock preceding the falling edge of the word clock. Similarly, the LSB of the right channel is valid on the rising edge of the bit clock preceding the rising edge of the word clock. Figure 5-19. Timing Diagram for Right-Justified Mode For right-justified mode, the number of bit clocks per frame should be greater than or equal to twice the programmed word length of the data. Copyright © 2009, Texas Instruments Incorporated APPLICATION INFORMATION 45 Submit Documentation Feedback Product Folder Link(s): TLV320DAC3120 |
Similar Part No. - TLV320DAC3120_10 |
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Similar Description - TLV320DAC3120_10 |
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