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TAS3108IADCPRG4 Datasheet(PDF) 11 Page - Texas Instruments |
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TAS3108IADCPRG4 Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 63 page  www.ti.com 3.8.1 2 channel I 2S Timing 23 22 SCLK 32 Clks LRCLK (Note Reversed Phase) Left Channel 24-Bit Mode 9 8 5 4 1 0 19 18 20-Bit Mode 5 4 1 0 16-Bit Mode 1 0 15 14 MSB LSB 23 22 SCLK 32 Clks Right Channel 9 8 5 4 1 0 19 18 5 4 1 0 1 0 15 14 MSB LSB 2-Channel I2S (Philips Format) Stereo Input/Output T0034-04 TAS3108, TAS3108IA AUDIO DIGITAL SIGNAL PROCESSORS SLES152B – OCTOBER 2005 – REVISED NOVEMBER 2007 Following a reset, ensure that the clock register (0x00) is written before performing volume, treble, or bass updates. Commands to reconfigure the SAP can be accompanied by mute and unmute commands for quiet operation. However, care must be taken to ensure that the mute command has completed before the SAP is commanded to reconfigure. Similarly, the TAS3108/TAS3108IA should not be commanded to unmute until after the SAP has completed a reconfiguration. The reason for this is that an SAP configuration change while a volume or bass or treble update is taking place can cause the update not to be completed properly. When the TAS3108/TAS3108IA is transmitting serial data, it uses the negative edge of SCLK to output a new data bit. The TAS3108/TAS3108IA samples incoming serial data on the rising edge of SCLK. The TAS3108/TAS3108IA only supports TDM, left justified, right justified, and I2S formats. In 2 channel I2S timing, LRCLK is LOW when left channel data is transmitted and HIGH when right channel data is transmitted. SCLK is a bit clock running at 64 × f S, which clocks in each bit of the data. There is a delay of one bit clock from the time the LRCLK signal changes state to the first bit of data on the data lines. The data is written MSB first and is valid on the rising edge of the bit clock. The TAS3108/TAS3108IA masks unused trailing data-bit positions. Figure 3-2. I2S 64-fS Format Submit Documentation Feedback Physical Characteristics 11 Not Recommended for New Designs |
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