Production Data
WM8716
SOFT MUTE
MUT
(REG2, B0)
L
Soft Mute off (normal operation)
Soft Mute on (no output)
H
Table 8 Soft Mute
Setting MUT causes the attenuation to ramp from the current value down to 00. The values held in
the attenuation registers are unchanged. When MUT is reset the attenuation will ramp back up to the
previous value. The ramp rate is 128/fs s/0.5dB step.
DIGITAL DE-EMPHASIS
DEM
(REG2, B1)
L
De-emphasis off
De-emphasis on
H
Table 9 Digital De-Emphasis
DAC OPERATION ENABLE
OPE
(REG2,B2)
L
Normal operation
H
DAC output forced to bipolar zero,
irrespective of input data.
Table 10 DAC Operation Enable
AUDIO DATA INPUT FORMAT
I2S
IW1
IW0
AUDIO INTERFACE
(REG3, B0)
(REG2, B4)
(REG2, B3)
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
16-bit standard right justified
20-bit standard right justified
24-bit standard right justified
24-bit left justified (MSB first)
16-bit I2S
24-bit I2S
20-bit I2S
20-bit left justified (MSB first)
Table 11 Audio Data Input Format
POLARITY OF LR INPUT CLOCK
The left channel data for a particular sample instant is always input first, then the right channel data.
LRP
(REG3, B1)
L
LR High – left channel
LR Low – right channel
LR Low – left channel
LR High – right channel
H
Table 12 Polarity of LR Input Clock
w
PD Rev 4.1September 2006
15
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
