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WM8991 Datasheet(PDF) 39 Page - Wolfson Microelectronics plc

Part # WM8991
Description  Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver
PDF  174 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8991 Datasheet(HTML) 39 Page - Wolfson Microelectronics plc

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Pre-Production
WM8991
w
PP, May 2008, Rev 3.1
39
INPUT SIGNAL PATH
The WM8991 has eight highly flexible analogue input channels, configurable in many combinations
of the following:
1. Up to four pseudo-differential or single-ended microphone inputs
2. Up to eight mono line inputs or 4 stereo line inputs
3. Mono input from external voice CODEC
4. Two fully balanced differential inputs
These inputs may be mixed together or independently routed to different combinations of output
drivers. An internal record path is provided at the input mixers to allow DAC output to be mixed with
the input signal path (e.g. for karaoke or voice call recording).
The WM8991 input signal paths and control registers are illustrated in Figure 16.
Figure 16 Control Registers for Input Signal Path



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