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WM8946 Fiches technique(PDF) 73 Page - Wolfson Microelectronics plc

No de pièce WM8946
Description  Stereo Low-Power CODEC with Video Buffer
PDF  175 Pages
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Fabricant  WOLFSON [Wolfson Microelectronics plc]
Site Internet  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8946 Fiches technique(HTML) 73 Page - Wolfson Microelectronics plc

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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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