WM8776
Production Data
OUTPUT SELECT AND ENABLE CONTROL
Register bits MX controls the output selection. The output select block consists of a summing stage
and an input select switch for each input allowing each signal to be output individually or summed
with other signals and output on the analogue output. The default for the output is DAC playback
only. VOUT may be selected to output DAC playback, AUX, analogue bypass or a sum of these
using the output select controls MX[2:0]. For example, to select sum of DAC and AUX, set MX[2:0] to
011.
The output mixer is powered down with DACD.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R22 (16h)
0010110
2:0
MX[2:0]
001
VOUT Output select (see Figure 26)
(DAC playback)
Output Mux
Figure 26 MX[2:0] Output Select
SOFTWARE REGISTER RESET
Writing any value to register 0010111 will cause a register reset, resetting all register bits to
their default values.
PD Rev 4.0 April 2005
40
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
