WM1811A datasheet(130/328 Pages) WOLFSON

130 / 328 page

WM1811A

Production Data

PD, November 2013, Rev 4.1

130

LINEOUT1N_MUTE=0, LINEOUT1P_MUTE=0

LINEOUT2N_MUTE=0, LINEOUT2P_MUTE=0

LINEOUT1_MODE=1

MIXOUTL_TO_LINEOUT2N=1

MIXOUTR_TO_LINEOUT2P=1

LINEOUT_VMID_BUF_ENA=1

LINEOUT1N_MUTE=0, LINEOUT1P_MUTE=0

LINEOUT2N_MUTE=0, LINEOUT2P_MUTE=0

LINEOUT1_MODE=1

LINEOUT2_MODE=1

MIXOUTL_TO_LINEOUT1N=1 and/or

MIXOUTL_TO_LINEOUT1P=1

MIXOUTR_TO_LINEOUT2N=1 and/or

MIXOUTR_TO_LINEOUT2P=1

LINEOUT_VMID_BUF_ENA=1

Figure 37 Stereo Single-Ended Line Out from

MIXOUTL and MIXOUTR to LINEOUT2

Figure 38 Mono Line Out to LINEOUT1N,

LINEOUT1P, LINEOUT2N, LINEOUT2P

The line outputs incorporate a common mode, or ground loop, feedback path which provides rejection

of system-related ground noise. The return path, via LINEOUTFB, is enabled separately for

LINEOUT1 and LINEOUT2 using the LINEOUT1_FB and LINEOUT2_FB bits as defined in Table 75.

Ground loop feedback is a benefit to single-ended line outputs only; it is not applicable to differential

outputs, which already inherently offer common mode noise rejection.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R55 (0037h)

Additional

Control

LINEOUT1_FB

Enable ground loop noise

feedback on LINEOUT1

0 = Disabled

1 = Enabled

LINEOUT2_FB

Enable ground loop noise

feedback on LINEOUT2

0 = Disabled

1 = Enabled

Table 75 Line Output Ground Loop Feedback Enable

WM1811A Datasheet(PDF) 130 Page - Wolfson Microelectronics plc

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