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 = earspeaker
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 = earspeaker
g = ground/midbias
AVDD
TLV320AIC3106
www.ti.com ........................................................................................................................................ SLAS509E – DECEMBER 2006 – REVISED DECEMBER 2008
Figure 37. 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 38 . Note that in
this mode, the device cannot accurately determine if the inserted headphone is a mono or stereo headphone.
Figure 38. 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 39 . 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, register 38, bits D2 – D1.
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