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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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WM8994ECS/R Datenblatt(PDF) 167 Page - Cirrus Logic |
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WM8994ECS/R Datenblatt(HTML) 167 Page - Cirrus Logic |
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167 / 363 page  WM8994 Rev 4.6 167 Time Division Multiplexing (TDM) is available in all four data format modes. On AIF1, the WM8994 can transmit and receive data on two stereo pairs of timeslots simultaneously. On AIF2, the applicable timeslot pair is selectable using register control bits. Two variants of DSP mode are supported - ‘Mode A’ and ‘Mode B’. Mono operation can be selected on either audio interface in both DSP modes. PCM operation is supported using the DSP mode. MASTER AND SLAVE MODE OPERATION The WM8994 digital audio interfaces can operate as a master or slave as shown in Figure 45 and Figure 46. The associated control bits are described in “Digital Audio Interface Control”. WM8994 ADCDAT LRCLK DACDAT BCLK Processor WM8994 Processor ADCDAT LRCLK DACDAT BCLK Figure 45 Master Mode Figure 46 Slave Mode OPERATION WITH TDM Time division multiplexing (TDM) allows multiple devices to transfer data simultaneously on the same bus. The WM8994 ADCs and DACs support TDM in master and slave modes for all data formats and word lengths. TDM is enabled and configured using register bits defined i n the “Digital Audio Interface Control ” section. WM8994 Processor WM8994 or Similar CODEC ADCDAT ADCLRC DACDAT BCLK ADCDAT ADCLRC DACDAT BCLK WM8994 Processor WM8994 or Similar CODEC ADCDAT ADCLRC DACDAT BCLK ADCDAT ADCLRC DACDAT BCLK Figure 47 TDM with WM8994 as Master Figure 48 TDM with Other CODEC as Master |
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