WM8955 Ver la hoja de datos (PDF) - Wolfson Microelectronics plc

Número de pieza

componentes Descripción

Fabricante

WM8955

STEREO DAC FOR PORTABLE AUDIO APPLICATIONS

Wolfson Microelectronics plc 

WM8955L

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REGISTER BIT

ADDRESS

LABEL

R36 (24h)

8

LD2RO

Right Mixer (1)

7

MI2RO

6:4 MI2ROVOL

R37 (25h)

8

Right Mixer (2)

7

RD2RO

RI2RO

6:4 RI2ROVOL

Table 7 Right Output Mixer Control

DEFAULT

DESCRIPTION

0

0

101

(-9dB)

0

0

101

(-9dB)

Left DAC to Right Mixer

0 = Disable (Mute)

1 = Enable Path

MONOIN Signal to Right Mixer

0 = Disable (Mute)

1 = Enable Path

MONOIN Signal to Right Mixer Volume

000 = +6dB

… (3dB steps)

111 = -15dB

Right DAC to Right Mixer

0 = Disable (Mute)

1 = Enable Path

LINEINR Signal to Right Mixer

0 = Disable (Mute)

1 = Enable Path

LINEINR Signal to Right Mixer Volume

000 = +6dB

… (3dB steps)

111 = -15dB

REGISTER BIT

ADDRESS

R38 (26h)

8

Mono Mixer (1)

LABEL

LD2MO

7

LI2MO

6:4 LI2MOVOL

R39 (27h)

8

Mono Mixer (2)

7

RD2MO

RI2MO

6:4 RI2MOVOL

Table 8 Mono Output Mixer Control

DEFAULT

DESCRIPTION

0

0

101

(-9dB)

0

0

101

(-9dB)

Left DAC to Mono Mixer

0 = Disable (Mute)

1 = Enable Path

LINEINL Signal to Mono Mixer

0 = Disable (Mute)

1 = Enable Path

LINEINL Signal to Right Mono Volume

000 = 0dB

… (3dB steps)

111 = -21dB

Right DAC to Mono Mixer

0 = Disable (Mute)

1 = Enable Path

LINEINR Signal to Mono Mixer

0 = Disable (Mute)

1 = Enable Path

LINEINR Signal to Mono Mixer Volume

000 = 0dB

… (3dB steps)

111 = -21dB

Note: The mono mixer has half the gain of the left and right mixers (i.e. 6dB less), to ensure that the

left and right channels can be mixed to mono without clipping.

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Product Preview Rev 0.4 May 2003

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