WM8904ECSSLASHR datasheet(62/188 Pages) WOLFSON

部件名	WM8904ECS/R

功能描述	Ultra Low Power CODEC for Portable Audio Applications

PDF	188 Pages

Scroll/Zoom	100%

制造商	WOLFSON [Wolfson Microelectronics plc]

网页	http://www.wolfsonmicro.com

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62 / 188 page

WM8904

Pre-Production

PP, Rev 3.3, September 2012

DIGITAL MIXING

The ADC and DAC data can be combined in various ways to support a range of different usage

modes.

Data from either of the two ADCs can be routed to either the left or the right channel of the digital

audio interface. In addition, data from either of the digital audio interface channels can be routed to

either the left or the right DAC. See "Digital Audio Interface" for more information on the audio

interface.

The WM8904 provides a Dynamic Range Control (DRC) feature, which can apply compression and

gain adjustment in the digital domain to either the ADC or DAC signal path. This is effective in

controlling signal levels under conditions where input amplitude is unknown or varies over a wide

range.

The DACs can be configured as a mono mix of the two audio channels. Digital sidetone from the

ADCs can also be selectively mixed into the DAC output path.

DIGITAL MIXING PATHS

Figure 35 shows the digital mixing paths available in the WM8904 digital core.

Figure 35 Digital Mixing Paths

WM8904ECS/R 数据表(PDF) 62 Page - Wolfson Microelectronics plc