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WM8956CGEFL/V Datasheet(PDF) 48 Page - Wolfson Microelectronics plc

Part # WM8956CGEFL/V
Description  Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers
PDF  80 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8956CGEFL/V Datasheet(HTML) 48 Page - Wolfson Microelectronics plc

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WM8956
Production Data
w
PD, November 2011, Rev 4.1
48
Setting the WL8 register bit allows the device to operate with 8-bit data. In this mode it is possible to
use 8 BCLK cycles per LRC frame. When using DSP mode B, this allows 8-bit data words to be
output consecutively every 8 BCLK cycles and can be used with 8-bit data words using the A-law and
u-law companding functions.
BIT7
BIT[6:4]
BIT[3:0]
SIGN
EXPONENT
MANTISSA
Table 30 8-bit Companded Word Composition
u-law Companding
0
20
40
60
80
100
120
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Normalised Input
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Figure 32 µ-Law Companding
A-law Companding
0
20
40
60
80
100
120
0
0.2
0.4
0.6
0.8
1
Normalised Input
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Figure 33 A-Law Companding



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