WM1811A datasheet(111/328 Pages) WOLFSON

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Production Data

WM1811A

PD, November 2013, Rev 4.1

111

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R45 (002Dh)

Output Mixer

(1)

DAC1L_TO_HPOU

T1L

HPOUT1LVOL (Left Headphone

Output PGA) Input Select

0 = MIXOUTL

1 = DACL

R29 (001Dh)

Right Output

Volume

HPOUT1_VU

N/A

Headphone Output PGA Volume

Update

Writing a 1 to this bit will update

HPOUT1LVOL and HPOUT1RVOL

volumes simultaneously.

HPOUT1R_ZC

HPOUT1RVOL (Right Headphone

Output PGA) Zero Cross Enable

0 = Zero cross disabled

1 = Zero cross enabled

HPOUT1R_MUTE_

HPOUT1RVOL (Right Headphone

Output PGA) Mute

0 = Mute

1 = Un-mute

5:0

HPOUT1R_VOL[5:0

]

2Dh

(-12dB)

HPOUT1RVOL (Right Headphone

Output PGA) Volume

-57dB to +6dB in 1dB steps

00_0000 = -57dB

00_0001 = -56dB

… (1dB steps)

11_1111 = +6dB

(See Table 64 for output PGA

volume control range)

R46 (002Eh)

Output Mixer

(2)

DAC1R_TO_HPOU

T1R

HPOUT1RVOL (Right Headphone

Output PGA) Input Select

0 = MIXOUTR

1 = DACR

R96 (0060h)

Analogue HP

(1)

HPOUT1_ATTN

HPOUT1L and HPOUT1R

Attenuation

0 = 0dB

1 = -3dB

Note that, when CP_DYN_PWR=0,

then any update to HPOUT1_ATTN

is not fully implemented until a ‘1’ is

written to HPOUT1_VU.

Table 62 Headphone Output PGA (HPOUT1LVOL, HPOUT1RVOL) Control

WM1811A Datasheet(PDF) 111 Page - Wolfson Microelectronics plc

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