WM1811A datasheet(46/328 Pages) WOLFSON

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WM1811A

Production Data

PD, November 2013, Rev 4.1

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R25 (0019h)

Left Line Input

3&4 Volume

IN2_VU

N/A

Input PGA Volume Update

Writing a 1 to this bit will cause IN2L and

IN2R input PGA volumes to be updated

simultaneously

IN2L_MUTE

IN2L PGA Mute

0 = Disable Mute

1 = Enable Mute

IN2L_ZC

IN2L PGA Zero Cross Detector

0 = Change gain immediately

1 = Change gain on zero cross only

4:0

IN2L_VOL[4

:0]

01011

(0dB)

IN2L Volume

-16.5dB to +30dB in 1.5dB steps

(See Table 5 for volume range)

R26 (001Ah)

Right Line

Input 1&2

Volume

IN1_VU

N/A

Input PGA Volume Update

Writing a 1 to this bit will cause IN1L and

IN1R input PGA volumes to be updated

simultaneously

IN1R_MUTE

IN1R PGA Mute

0 = Disable Mute

1 = Enable Mute

IN1R_ZC

IN1R PGA Zero Cross Detector

0 = Change gain immediately

1 = Change gain on zero cross only

4:0

IN1R_VOL[4

:0]

01011

(0dB)

IN1R Volume

-16.5dB to +30dB in 1.5dB steps

(See Table 5 for volume range)

R27 (001Bh)

Right Line

Input 3&4

Volume

IN2_VU

N/A

Input PGA Volume Update

Writing a 1 to this bit will cause IN2L and

IN2R input PGA volumes to be updated

simultaneously

IN2R_MUTE

IN2R PGA Mute

0 = Disable Mute

1 = Enable Mute

IN2R_ZC

IN2R PGA Zero Cross Detector

0 = Change gain immediately

1 = Change gain on zero cross only

4:0

IN2R_VOL[4

:0]

01011

(0dB)

IN2R Volume

-16.5dB to +30dB in 1.5dB steps

(See Table 5 for volume range)

Table 4 Input PGA Volume Control

WM1811A Datasheet(PDF) 46 Page - Wolfson Microelectronics plc

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