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WM8994ECS/R датащи(PDF) 170 Page - Cirrus Logic |
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WM8994ECS/R датащи(HTML) 170 Page - Cirrus Logic |
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170 / 363 page ![]() WM8994 170 Rev 4.6 n n-1 n-2 3 2 1 n n-1 n-2 3 2 1 LEFT CHANNEL RIGHT CHANNEL MSB LSB Input Word Length (WL) 1/fs LRCLK BCLK DACDAT/ ADCDAT Figure 54 DSP Mode Audio Interface (mode B, AIF_LRCLK_INV=1, Master) n n-1 n-2 3 2 1 n n-1 n-2 3 2 1 LEFT CHANNEL RIGHT CHANNEL MSB LSB Input Word Length (WL) 1/fs LRCLK BCLK DACDAT/ ADCDAT 1 BCLK Falling edge can occur anywhere in this area 1 BCLK Figure 55 DSP Mode Audio Interface (mode A, AIF_LRCLK_INV=0, Slave) n n-1 n-2 3 2 1 n n-1 n-2 3 2 1 LEFT CHANNEL RIGHT CHANNEL MSB LSB Input Word Length (WL) 1/fs LRCLK BCLK DACDAT/ ADCDAT 1 BCLK 1 BCLK Falling edge can occur anywhere in this area Figure 56 DSP Mode Audio Interface (mode B, AIF_LRCLK_INV=1, Slave) Mono mode operation is available in DSP interface mode. When Mono mode is enabled, the audio data is transmitted or received starting on either the 1st (mode B) or 2nd (mode A) rising edge of BCLK following a rising edge of LRCLK. PCM operation is supported in DSP interface mode. WM8994 ADC data that is output on the Left Channel will be read as mono PCM data by the receiving equipment. Mono PCM data received by the WM8994 will be treated as Left Channel data. This data may be routed to the Left/Right DACs using the control fields described in the “Digital Mixing” and “Digital Audio Interface Control” sections. |
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