Datasheet

MICBIAS
MIC3(L/R)
HPLOUT
HPROUT
To
detection
block
HPRCOM
HPLCOM
1.35
MICDET
To Detection block
s
s
g m
s
g m s
sg
Stereo
Cellular
Stereo +
Cellular
m = mic
s = speaker
g = ground/midbias
AVDD
MICBIAS
MIC3(L/R)
HPLOUT
HPROUT
MICDET
To Detection block
s
s
g m
s
g m s
sgStereo
Cellular
Stereo +
Cellular
m = mic
s = speaker
g = ground/midbias
AVDD
TLV320AIC33
www.ti.com ........................................................................................................................................... SLAS480B – JANUARY 2006 – REVISED DECEMBER 2008
Figure 36. Configuration of device for jack detection using a pseudo-differential (capless) headphone
output connection.
A modified output configuration used when the output drivers are ac-coupled is shown in Figure 37 . Note that in
this mode, the device cannot accurately determine the type of headset inserted if a mono or stereo headphone.
Figure 37. Configuration of device for jack detection using an ac-coupled stereo headphone output
connection.
An output configuration for the case of the outputs driving fully differential stereo headphones is shown in
Figure 38 . In this mode there is a requirement on the jack side that either HPLCOM or HPLOUT get shorted to
ground if the plug is removed, which can be implemented using a spring terminal in a jack. For this mode to
function properly, short-circuit detection should be enabled and configured to power-down the drivers if a
short-circuit is detected. The registers that control this functionality are in Page-0/Reg-38/Bit-D2-D1.
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