WM8580
Production Data
INFINITE ZERO DETECT
Setting the IZD register bit will enable the internal Infinite Zero Detect function:
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R16
DAC Control 2
10h
7
IZD
0
Infinite zero detection circuit control
and automute control
0 = Infinite zero detect automute
disabled
1 = Infinite zero detect automute
enabled
Table 21 IZD Register
With IZD enabled, applying 1024 consecutive zero input samples to a stereo input channel on any
DAC will cause that stereo channel output to be muted. Mute will be removed as soon as either of
those stereo channels receives a non-zero input.
PD Rev 4.3 August 2007
32
w