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WM8946 数据表(PDF) 73 Page - Wolfson Microelectronics plc |
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WM8946 数据表(HTML) 73 Page - Wolfson Microelectronics plc |
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73 / 175 page ![]() Production Data WM8946 w PD, July 2012, Rev 4.3 73 Figure 26 DSP/PCM Mode Audio Interface (mode B, LRCLK_INV=1, Master) Figure 27 DSP/PCM Mode Audio Interface (mode A, LRCLK_INV=0, Slave) Figure 28 DSP/PCM Mode Audio Interface (mode B, LRCLK_INV=0, Slave) COMPANDING The WM8946 supports A-law and -law companding on both transmit (ADC) and receive (DAC) sides as shown in Table 47. Companding converts 13 bits ( -law) or 12 bits (A-law) to 8 bits using non- linear quantization. This provides greater precision for low-amplitude signals than for high-amplitude signals, resulting in a greater usable dynamic range than 8 bit linear quantization. |
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