WM8994ECSSLASHR datasheet(133/363 Pages) CIRRUS

133 / 363 page

WM8994

Rev 4.6

133

The LINEOUT2 output mixers are controlled as described in Table 69. Care should be taken to avoid

clipping when enabling more than one path to the line output mixers. The LINEOUT2_VOL control can

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

When using the LINEOUT2 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 (001Eh)

Line Outputs

Volume

LINEOUT2N_MUTE

LINEOUT2N Line Output Mute

0 = Un-mute

1 = Mute

LINEOUT2P_MUTE

LINEOUT2P Line Output Mute

0 = Un-mute

1 = Mute

LINEOUT2_VOL

LINEOUT2 Line Output Volume

0 = 0dB

1 = -6dB

Applies to both LINEOUT2N and

LINEOUT2P

R53 (0035h)

Line Mixer (2)

MIXOUTR_TO_LINEO

UT2N

MIXOUTR to Single-Ended Line

Output on LINEOUT2N

0 = Mute

1 = Un-mute

(LINEOUT2_MODE = 1)

MIXOUTL_TO_LINEO

UT2N

MIXOUTL to Single-Ended Line

Output on LINEOUT2N

0 = Mute

1 = Un-mute

(LINEOUT2_MODE = 1)

LINEOUT2_MODE

LINEOUT2 Mode Select

0 = Differential

1 = Single-Ended

IN1L_TO_LINEOUT2P

IN1L Input PGA to Differential Line

Output on LINEOUT2

0 = Mute

1 = Un-mute

(LINEOUT2_MODE = 0)

IN1R_TO_LINEOUT2P

IN1R Input PGA to Differential Line

Output on LINEOUT2

0 = Mute

1 = Un-mute

(LINEOUT2_MODE = 0)

MIXOUTR_TO_LINEO

UT2P

Differential Mode

(LINEOUT2_MODE = 0):

MIXOUTR to Differential Output on

LINEOUT2

0 = Mute

1 = Un-mute

Single-Ended Mode

(LINEOUT2_MODE = 0):

MIXOUTR to Single-Ended Line

Output on LINEOUT2P

0 = Mute

1 = Un-mute

Table 69 LINEOUT2N and LINEOUT2P Control

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