WM8959
Pre-Production
In Rx Voice Mode (AINLMODE=01, AINRMODE=01), adjustable gain control is available for the
RXVOICE output by use of the LR4BVOL[2:0] and LL4BVOL[2:0] register fields on the left channel
and by RL4BVOL[2:0] and RR4BVOL[2:0] on the right channel. Both Volume fields for the desired
channel(s) must be set to the same value for true Differential input characteristics. This configuration
is illustrated in Figure 25. The applicable register settings are shown in Table 10.
CONFIGURATION
REGISTER SETTINGS
1. Select Rx Voice Mode AINLMODE = 01
2. Enable Rx Voice input as required LL4BVOL
Left Channel Rx Voice
Mode
(RXVOICE to AINLMUX)
Important: These two register fields
must be set to the same value. See
Table 12 for full definitions of these
fields.
LR4BVOL
Right Channel Rx Voice
Mode
1. Select Rx Voice Mode
AINRMODE = 01
2. Enable Rx Voice input as required RL4BVOL
(RXVOICE to AINRMUX)
Important: These two register fields
must be set to the same value. See
Table 13 for full definitions of these
fields.
RR4BVOL
Table 10 RxVoice Mode Register Settings
Figure 25 RxVoice Mode Signal Paths
PP, May 2008, Rev 3.1
46
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
