WM8991 datasheet(67/174 Pages) WOLFSON

67 / 174 page

Pre-Production

WM8991

PP, May 2008, Rev 3.1

OUTPUT MIXER CONTROL

The Output Mixer volume controls are described in Table 32 for the Left Channel and Table 33 for

the Right Channel. The gain of each of analogue input paths may be controlled independently in the

range described in Table 34. The DAC input levels may be controlled by the DAC digital volume

control - see “Digital to Analogue Converter (DAC)” for further details of this control.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R45 (2Dh)

LRI3LO

RIN3 to LOMIX Mute

0 = Mute

1 = Un-mute

R45 (2Dh)

LLI3LO

LIN3 to LOMIX Mute

0 = Mute

1 = Un-mute

R49 (31h)

8:6

LRI3LOVOL

[2:0]

000b

RIN3 to LOMIX Volume

(See Table 34 for Volume Range)

R47 (2Fh)

8:6

LLI3LOVOL

[2:0]

000b

LIN3 to LOMIX Volume

(See Table 34 for Volume Range)

R45 (2Dh)

LL12LO

LIN12 PGA Output to LOMIX Mute

0 = Mute

1 = Un-mute

R47 (2Fh)

2:0

LL12LOVOL

[2:0]

000b

LIN12 PGA Output to LOMIX Volume

(See Table 34 for Volume Range)

R45 (2Dh)

LR12LO

RIN12 PGA Output to LOMIX Mute

0 = Mute

1 = Un-mute

R47 (2Fh)

5:3

LR12LOVOL

[2:0]

000b

RIN12 PGA Output to LOMIX Volume

(See Table 34 for Volume Range)

R45 (2Dh)

LRBLO

AINRMUX Output (Right ADC bypass)

to LOMIX Mute

0 = Mute

1 = Un-mute

R49 (31h)

5:3

LRBLOVOL

[2:0]

000b

AINRMUX Output (Right ADC bypass)

to LOMIX Volume

(See Table 34 for Volume Range)

R45 (2Dh)

LLBLO

AINLMUX Output (Left ADC bypass)

to LOMIX Mute

0 = Mute

1 = Un-mute

R49 (31h)

2:0

LLBLOVOL

[2:0]

000b

AINLMUX Output (Left ADC bypass)

to LOMIX Volume

(See Table 34 for Volume Range)

R45 (2Dh)

LDLO

Left DAC to LOMIX Mute

0 = Mute

1 = Un-mute

Note: LDLO must be muted when

LDSPK=1

Table 32 Left Output Mixer (LOMIX) Volume Control

WM8991 Datasheet(PDF) 67 Page - Wolfson Microelectronics plc

WM8991 Datasheet(HTML) 67 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL