WM8991 datasheet(49/174 Pages) WOLFSON

Part #	WM8991

Description	Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver

PDF	174 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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49 / 174 page

Pre-Production

WM8991

PP, May 2008, Rev 3.1

In Mixer Mode (AINLMODE=00, AINRMODE=00), adjustable gain control is available on the input

mixers INMIXL and INMIXR for all available input signals (PGA outputs, line inputs and record paths).

This configuration is illustrated in Figure 25. The applicable register settings are shown in Table 9.

CONFIGURATION

1. Select Mixer Mode

AINLMODE = 00

Left Channel Mixer Mode

(INMIXL to AINLMUX)

2. Enable input paths as required

(see Table 5 and Table 12 for full

definitions of the applicable settings

listed here)

L12MNB, L12MNBST

LIN12VOL, LIN12MUTE

L34MNB, L34MNBST

LIN34VOL, LIN34MUTE

LDBVOL

LI2BVOL

1. Select Mixer Mode

AINRMODE = 00

Right Channel Mixer

Mode

(INMIXR to AINRMUX)

2. Enable input paths as required

(see Table 5 and Table 13 for full

definitions of the applicable settings

listed here)

R12MNB, R12MNBST

RIN12VOL, RIN12MUTE

R34MNB, R34MNBST

RIN34VOL, RIN34MUTE

RDBVOL

RI2BVOL

Table 9 Mixer Mode Register Settings

Figure 25 Mixer Mode Signal Paths

WM8991 Datasheet(PDF) 49 Page - Wolfson Microelectronics plc