WM8946ECSSLASHR datasheet(33/175 Pages) WOLFSON

Part #	WM8946ECS/R

Description	Stereo Low-Power CODEC with Video Buffer

PDF	175 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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33 / 175 page

Production Data

WM8946

PD, July 2012, Rev 4.3

DSP CORE

DSP Core is at the centre of the ADC / DAC / Digital Audio Interface (I2S) blocks. It provides signal

routing, and also implements a number of configurable signal processing functions.

The signal processing functions are arranged in three blocks, as follows:



Signal Enhancement 1 (SE1) - Low-pass / High-pass filter, 3D-stereo enhancement,

5 notch filters, generic ‘Direct-Form 1’ filter.



Signal Enhancement 2 (SE2) - ReTune™ processing, 5-band equalizer.



Signal Enhancement 3 (SE3) - Dynamic range control

The DSP Configuration modes and each of the Signal Enhancement blocks is described in the

following sections.

DSP CONFIGURATION MODES

The DSP Configuration Mode is determined using the SE_CONFIG register field; this configures the

signal paths between the Signal Enhancement blocks and the ADC / DAC / I2S interfaces. The

supported DSP modes are illustrated in Figure 13.

Figure 13 DSP Configuration Modes

WM8946ECS/R Datasheet(PDF) 33 Page - Wolfson Microelectronics plc