Pre-Production
WM8959
The Input Mixer configuration is described for each of the three modes in the following sections. Note
that the Left and Right multiplexer (mode) settings can be set independently.
In Mixer Mode (AINLMODE=00, AINRMODE=00), adjustable gain control is available on the input
mixers INMIXL and INMIXR for all available input signals (PGA outputs, line inputs and record paths).
This configuration is illustrated in Figure 24. The applicable register settings are shown in Table 9.
CONFIGURATION
Left Channel Mixer Mode
(INMIXL to AINLMUX)
REGISTER SETTINGS
1. Select Mixer Mode
AINLMODE = 00
2. Enable input paths as required
L12MNB, L12MNBST
LIN12VOL, LIN12MUTE
L34MNB, L34MNBST
LIN34VOL, LIN34MUTE
LI2BVOL
(see Table 5 and Table 12 for full
definitions of the applicable settings
listed here)
Right Channel Mixer
Mode
1. Select Mixer Mode
AINRMODE = 00
2. Enable input paths as required
R12MNB, R12MNBST
RIN12VOL, RIN12MUTE
R34MNB, R34MNBST
RIN34VOL, RIN34MUTE
RI2BVOL
(INMIXR to AINRMUX)
(see Table 5 and Table 13 for full
definitions of the applicable settings
listed here)
Table 9 Mixer Mode Register Settings
Figure 24 Mixer Mode Signal Paths
PP, May 2008, Rev 3.1
45
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
