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Setting up Hardware VAD: Part 2/2 – Default ZPL Settings
Default ZPL configuration is optimized for Voice-Activity Detect (VAD) in a TWS earbud design.
I
2
C Address Function
0x0
I
2
C Control
0x1
WOS PGA Gain
0x2
WOS Filter
0x3
WOS PGA MIN THR
0x4
WOS PGA MAX THR 0x1B
0x5
WOS Threshold
0x6
BIST Control
12
Default Value Comments
0x0
Hardware MODE pin is enabled
DOUT latching is enabled (Raw DOUT disabled)
Read Only
Ambient Acceleration Readout is disabled
(PGA MIN = PGA MAX)
0x0
ZPL band-pass filter is 200Hz – 1kHz
0x1B
Feedback loop is locked to 0.013G
(PGA MIN = PGA MAX = 0x1B)
0x0
Threshold is just above 0.013G
0x0
Built-In Self Test is disabled
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