WM8993 datasheet(82/229 Pages) WOLFSON

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WM8993

Production Data

PD, November 2010, Rev 4.0

The LINEOUT1 output mixers are controlled as described in Table 53. Care should be taken to avoid

clipping when enabling more than one path to the line output mixers. The LINEOUT1_VOL control

can be used to provide -6dB attenuation when more than one full scale signal is applied.

When using the LINEOUT1 mixers in single-ended mode, a buffered VMID must be enabled. This is

achieved by setting LINEOUT_VMID_BUF_ENA, as described in the “Analogue Outputs” section.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R30 (1Eh)

Line Outputs

Volume

LINEOUT1N_MUTE

LINEOUT1N Line Output Mute

0 = Un-mute

1 = Mute

LINEOUT1P_MUTE

LINEOUT1P Line Output Mute

0 = Un-mute

1 = Mute

LINEOUT1_VOL

LINEOUT1 Line Output Volume

0 = 0dB

1 = -6dB

Applies to both LINEOUT1N and

LINEOUT1P

R52 (34h)

Line Mixer1

MIXOUTL_TO_LINEO

UT1N

MIXOUTL to Single-Ended Line

Output on LINEOUT1N

0 = Mute

1 = Un-mute

(LINEOUT1_MODE = 1)

MIXOUTR_TO_LINE

OUT1N

MIXOUTR to Single-Ended Line

Output on LINEOUT1N

0 = Mute

1 = Un-mute

(LINEOUT1_MODE = 1)

LINEOUT1_MODE

LINEOUT1 Mode Select

0 = Differential

1 = Single-Ended

IN1R_TO_LINEOUT1

IN1R Input PGA to Differential Line

Output on LINEOUT1

0 = Mute

1 = Un-mute

(LINEOUT1_MODE = 0)

IN1L_TO_LINEOUT1

IN1L Input PGA to Differential Line

Output on LINEOUT1

0 = Mute

1 = Un-mute

(LINEOUT1_MODE = 0)

MIXOUTL_TO_LINEO

UT1P

Differential Mode

(LINEOUT1_MODE = 0):

MIXOUTL to Differential Output on

LINEOUT1

0 = Mute

1 = Un-mute

Single Ended Mode

(LINEOUT1_MODE = 1):

MIXOUTL to Single-Ended Line

Output on LINEOUT1P

0 = Mute

1 = Un-mute

Table 53 LINEOUT1N and LINEOUT1P Control

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